./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme --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 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:47:13,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:47:13,374 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-26 10:47:13,388 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:47:13,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:47:13,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:47:13,436 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:47:13,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:47:13,438 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:47:13,444 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:47:13,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:47:13,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:47:13,447 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:47:13,450 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 10:47:13,450 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 10:47:13,451 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 10:47:13,451 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 10:47:13,452 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 10:47:13,452 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 10:47:13,453 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:47:13,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 10:47:13,454 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:47:13,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:47:13,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:47:13,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:47:13,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 10:47:13,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 10:47:13,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 10:47:13,458 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:47:13,458 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:47:13,460 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:47:13,460 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 10:47:13,461 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:47:13,461 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:47:13,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:47:13,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:47:13,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:47:13,463 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 10:47:13,463 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_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2023-11-26 10:47:13,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:47:13,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:47:13,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:47:13,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:47:13,823 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:47:13,825 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2023-11-26 10:47:16,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:47:17,129 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:47:17,130 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2023-11-26 10:47:17,138 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/data/2dfd0572b/90235d6968f343be8ae02ef2081ef2e4/FLAG0fb7b50ad [2023-11-26 10:47:17,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/data/2dfd0572b/90235d6968f343be8ae02ef2081ef2e4 [2023-11-26 10:47:17,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:47:17,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:47:17,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:47:17,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:47:17,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:47:17,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a70b7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17, skipping insertion in model container [2023-11-26 10:47:17,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,187 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:47:17,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:47:17,381 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:47:17,397 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:47:17,412 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:47:17,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17 WrapperNode [2023-11-26 10:47:17,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:47:17,430 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:47:17,430 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:47:17,430 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:47:17,438 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,460 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-26 10:47:17,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:47:17,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:47:17,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:47:17,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:47:17,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,473 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,485 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 10:47:17,485 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,486 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,488 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,491 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,493 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:47:17,496 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:47:17,496 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:47:17,496 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:47:17,497 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (1/1) ... [2023-11-26 10:47:17,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:17,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:17,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:17,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 10:47:17,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:47:17,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:47:17,585 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-26 10:47:17,586 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-26 10:47:17,586 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-26 10:47:17,586 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-26 10:47:17,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:47:17,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:47:17,671 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:47:17,674 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:47:17,816 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:47:17,826 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:47:17,827 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 10:47:17,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:47:17 BoogieIcfgContainer [2023-11-26 10:47:17,829 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:47:17,830 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 10:47:17,831 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 10:47:17,835 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 10:47:17,836 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:47:17,836 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 10:47:17" (1/3) ... [2023-11-26 10:47:17,837 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a49b0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 10:47:17, skipping insertion in model container [2023-11-26 10:47:17,838 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:47:17,838 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:47:17" (2/3) ... [2023-11-26 10:47:17,839 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a49b0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 10:47:17, skipping insertion in model container [2023-11-26 10:47:17,839 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:47:17,839 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:47:17" (3/3) ... [2023-11-26 10:47:17,841 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-1.c [2023-11-26 10:47:17,901 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 10:47:17,901 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 10:47:17,902 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 10:47:17,902 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 10:47:17,902 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 10:47:17,902 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 10:47:17,903 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 10:47:17,903 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 10:47:17,912 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 10:47:17,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-26 10:47:17,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:47:17,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:47:17,945 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-26 10:47:17,945 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:17,945 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 10:47:17,946 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-26 10:47:17,949 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-26 10:47:17,949 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:47:17,950 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:47:17,950 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-26 10:47:17,950 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:17,957 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2023-11-26 10:47:17,958 INFO L750 eck$LassoCheckResult]: Loop: 18#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 15#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 14#L22true assume !(1 == ~n); 21#L25true call #t~ret6 := fibo1(~n - 1);< 18#$Ultimate##0true [2023-11-26 10:47:17,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2023-11-26 10:47:17,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:17,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969495667] [2023-11-26 10:47:17,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:17,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:18,085 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:47:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:18,115 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:47:18,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2023-11-26 10:47:18,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:18,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483094952] [2023-11-26 10:47:18,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:18,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:18,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:47:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:18,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:47:18,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:18,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2023-11-26 10:47:18,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:18,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999252656] [2023-11-26 10:47:18,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:18,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:18,189 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:47:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:18,226 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:47:18,598 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:47:18,599 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:47:18,599 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:47:18,599 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:47:18,599 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:47:18,600 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:18,600 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:47:18,600 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:47:18,600 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2023-11-26 10:47:18,600 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:47:18,601 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:47:18,619 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:18,631 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:18,634 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:18,638 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:18,641 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:18,645 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:18,648 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:18,651 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:18,738 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:47:18,739 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:47:18,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:18,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:18,746 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:18,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-26 10:47:18,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:18,759 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:18,791 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:18,792 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:18,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:18,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:18,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:18,803 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:18,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-26 10:47:18,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:18,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:18,837 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:18,837 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:18,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:18,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:18,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:18,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:18,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-26 10:47:18,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:18,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:18,866 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:18,866 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:18,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:18,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:18,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:18,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:18,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:18,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:18,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-26 10:47:18,903 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:18,903 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:18,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:18,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:18,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:18,909 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:18,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-26 10:47:18,915 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:18,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:18,937 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:18,938 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:18,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:18,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:18,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:18,947 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:18,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-26 10:47:18,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:18,952 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:18,966 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:18,966 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:18,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-26 10:47:18,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:18,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:18,980 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:18,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:18,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:19,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-26 10:47:19,015 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:19,015 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:19,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:19,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:19,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:19,024 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:19,031 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:19,031 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:19,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-26 10:47:19,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:19,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:19,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:19,059 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:19,067 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:47:19,067 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:19,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-26 10:47:19,146 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:47:19,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:19,151 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:47:19,151 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:47:19,151 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:47:19,151 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:47:19,151 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:47:19,151 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:19,152 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:47:19,152 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:47:19,152 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2023-11-26 10:47:19,152 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:47:19,152 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:47:19,154 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:19,161 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:19,166 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:19,169 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:19,174 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:19,177 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:19,189 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:19,193 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:19,281 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:47:19,286 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:47:19,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:19,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:19,289 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:19,303 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 [2023-11-26 10:47:19,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-26 10:47:19,318 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:19,318 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:19,319 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:19,319 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:19,319 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:19,322 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:19,322 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:19,338 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:19,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:19,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:19,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:19,345 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:19,351 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 [2023-11-26 10:47:19,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-26 10:47:19,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:19,365 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:19,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:19,365 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:19,365 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:19,366 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:19,366 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:19,382 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:19,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:19,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:19,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:19,394 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:19,408 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 [2023-11-26 10:47:19,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-26 10:47:19,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:19,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:19,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:19,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:19,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:19,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:19,424 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:19,433 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:19,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:19,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:19,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:19,444 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:19,454 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 [2023-11-26 10:47:19,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-26 10:47:19,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:19,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:19,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:19,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:19,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:19,469 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:19,469 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:19,474 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:19,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:19,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:19,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:19,480 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:19,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-26 10:47:19,487 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 [2023-11-26 10:47:19,500 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:19,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:19,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:19,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:19,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:19,502 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:19,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:19,512 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:19,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:19,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:19,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:19,523 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:19,535 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 [2023-11-26 10:47:19,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-26 10:47:19,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:19,549 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:19,549 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:19,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:19,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:19,551 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:19,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:19,574 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:47:19,602 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 10:47:19,602 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 10:47:19,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:19,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:19,657 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:19,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-26 10:47:19,660 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:47:19,661 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:47:19,661 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:47:19,661 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2023-11-26 10:47:19,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:19,671 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:47:19,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:47:19,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:19,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:47:19,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:19,976 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2023-11-26 10:47:19,978 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:20,241 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 85 states and 117 transitions. Complement of second has 24 states. [2023-11-26 10:47:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-26 10:47:20,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:47:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2023-11-26 10:47:20,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-26 10:47:20,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:20,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-26 10:47:20,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:20,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-26 10:47:20,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:20,256 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2023-11-26 10:47:20,264 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-26 10:47:20,274 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2023-11-26 10:47:20,275 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-26 10:47:20,276 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-26 10:47:20,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2023-11-26 10:47:20,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:47:20,278 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2023-11-26 10:47:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2023-11-26 10:47:20,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-26 10:47:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-26 10:47:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-26 10:47:20,321 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-26 10:47:20,321 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-26 10:47:20,321 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-26 10:47:20,321 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2023-11-26 10:47:20,323 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-26 10:47:20,323 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:47:20,324 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:47:20,325 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:20,325 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:20,326 INFO L748 eck$LassoCheckResult]: Stem: 236#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 223#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 218#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 217#$Ultimate##0 ~n := #in~n; 219#L10 assume !(~n < 1); 229#L12 assume !(1 == ~n); 213#L15 call #t~ret4 := fibo2(~n - 1);< 233#$Ultimate##0 ~n := #in~n; 247#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 220#$Ultimate##0 ~n := #in~n; 222#L10 assume ~n < 1;#res := 0; 209#fibo1FINAL assume true; 210#fibo1EXIT >#48#return; 211#L25-1 [2023-11-26 10:47:20,326 INFO L750 eck$LassoCheckResult]: Loop: 211#L25-1 call #t~ret7 := fibo1(~n - 2);< 216#$Ultimate##0 ~n := #in~n; 242#L10 assume !(~n < 1); 243#L12 assume !(1 == ~n); 212#L15 call #t~ret4 := fibo2(~n - 1);< 225#$Ultimate##0 ~n := #in~n; 245#L20 assume !(~n < 1); 246#L22 assume !(1 == ~n); 224#L25 call #t~ret6 := fibo1(~n - 1);< 216#$Ultimate##0 ~n := #in~n; 242#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#48#return; 211#L25-1 [2023-11-26 10:47:20,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:20,327 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2023-11-26 10:47:20,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:20,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032885008] [2023-11-26 10:47:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:20,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:20,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:47:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:47:20,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:20,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032885008] [2023-11-26 10:47:20,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032885008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:20,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:20,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:47:20,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446952559] [2023-11-26 10:47:20,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:20,489 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 10:47:20,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:20,489 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2023-11-26 10:47:20,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:20,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126812] [2023-11-26 10:47:20,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:20,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:20,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:47:20,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:20,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126812] [2023-11-26 10:47:20,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:20,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:20,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:47:20,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256533089] [2023-11-26 10:47:20,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:20,574 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:47:20,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:20,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:20,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:47:20,579 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:47:20,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:20,708 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2023-11-26 10:47:20,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2023-11-26 10:47:20,712 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-26 10:47:20,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2023-11-26 10:47:20,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-26 10:47:20,715 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-26 10:47:20,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2023-11-26 10:47:20,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:47:20,716 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-26 10:47:20,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2023-11-26 10:47:20,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-11-26 10:47:20,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2023-11-26 10:47:20,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-11-26 10:47:20,725 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-26 10:47:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:47:20,726 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-26 10:47:20,727 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-26 10:47:20,727 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2023-11-26 10:47:20,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-26 10:47:20,728 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:47:20,729 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:47:20,730 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:20,730 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:20,730 INFO L748 eck$LassoCheckResult]: Stem: 381#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 365#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 366#$Ultimate##0 ~n := #in~n; 367#L10 assume !(~n < 1); 395#L12 assume !(1 == ~n); 359#L15 call #t~ret4 := fibo2(~n - 1);< 379#$Ultimate##0 ~n := #in~n; 396#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 368#$Ultimate##0 ~n := #in~n; 370#L10 assume !(~n < 1); 373#L12 assume 1 == ~n;#res := 1; 374#fibo1FINAL assume true; 386#fibo1EXIT >#48#return; 355#L25-1 [2023-11-26 10:47:20,730 INFO L750 eck$LassoCheckResult]: Loop: 355#L25-1 call #t~ret7 := fibo1(~n - 2);< 362#$Ultimate##0 ~n := #in~n; 388#L10 assume !(~n < 1); 387#L12 assume !(1 == ~n); 361#L15 call #t~ret4 := fibo2(~n - 1);< 392#$Ultimate##0 ~n := #in~n; 391#L20 assume !(~n < 1); 389#L22 assume !(1 == ~n); 356#L25 call #t~ret6 := fibo1(~n - 1);< 362#$Ultimate##0 ~n := #in~n; 388#L10 assume !(~n < 1); 387#L12 assume 1 == ~n;#res := 1; 384#fibo1FINAL assume true; 385#fibo1EXIT >#48#return; 355#L25-1 [2023-11-26 10:47:20,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:20,731 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2023-11-26 10:47:20,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:20,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145941377] [2023-11-26 10:47:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:20,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:20,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:47:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:20,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:20,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145941377] [2023-11-26 10:47:20,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145941377] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:20,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656636459] [2023-11-26 10:47:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:20,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:20,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:20,888 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:20,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 10:47:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:20,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:47:20,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:21,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:21,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656636459] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:21,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:21,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-26 10:47:21,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598358961] [2023-11-26 10:47:21,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:21,161 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 10:47:21,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:21,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2023-11-26 10:47:21,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:21,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757420539] [2023-11-26 10:47:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:21,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:21,169 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:47:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:21,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:47:21,404 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:47:21,404 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:47:21,404 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:47:21,404 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:47:21,404 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:47:21,404 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:21,405 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:47:21,405 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:47:21,405 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2023-11-26 10:47:21,405 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:47:21,405 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:47:21,406 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,410 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,413 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,416 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,419 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,422 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,429 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,432 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,436 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,502 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:47:21,502 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:47:21,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:21,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:21,507 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:21,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:21,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:21,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-26 10:47:21,538 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:21,538 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:21,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:21,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:21,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:21,548 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:21,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:21,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:21,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-26 10:47:21,591 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:21,591 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:21,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:21,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:21,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:21,602 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:21,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:21,607 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:21,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-26 10:47:21,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:21,630 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:21,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:21,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:21,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:21,644 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:21,649 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:21,649 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:21,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-26 10:47:21,672 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:21,672 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:21,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:21,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:21,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:21,679 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:21,683 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:21,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:21,706 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:21,706 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:21,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-26 10:47:21,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:21,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:21,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:21,712 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:21,719 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:21,719 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:21,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-26 10:47:21,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:21,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:21,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:21,769 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:21,775 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:47:21,775 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:21,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-26 10:47:21,806 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:47:21,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:21,815 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:47:21,816 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:47:21,816 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:47:21,816 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:47:21,816 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:47:21,816 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:21,816 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:47:21,816 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:47:21,816 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2023-11-26 10:47:21,816 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:47:21,816 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:47:21,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,828 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,831 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,839 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,842 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,848 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,851 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,854 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,860 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:21,927 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:47:21,928 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:47:21,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:21,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:21,931 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:21,937 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 [2023-11-26 10:47:21,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-26 10:47:21,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:21,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:21,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:21,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:21,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:21,955 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:21,955 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:21,970 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:21,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:21,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:21,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:21,982 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:21,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-26 10:47:21,987 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 [2023-11-26 10:47:22,001 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:22,001 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:22,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:22,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:22,002 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:22,004 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:22,004 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:22,026 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:22,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:22,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:22,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:22,032 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:22,037 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 [2023-11-26 10:47:22,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-26 10:47:22,048 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:22,048 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:22,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:22,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:22,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:22,049 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:22,049 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:22,059 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:22,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-11-26 10:47:22,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:22,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:22,064 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:22,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-26 10:47:22,066 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 [2023-11-26 10:47:22,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:22,079 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:22,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:22,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:22,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:22,080 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:22,081 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:22,090 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:22,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:22,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:22,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:22,100 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:22,107 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 [2023-11-26 10:47:22,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-26 10:47:22,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:22,121 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:22,121 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:22,121 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:22,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:22,122 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:22,123 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:22,138 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:47:22,152 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 10:47:22,152 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 10:47:22,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:22,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:22,156 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:22,157 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:47:22,158 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:47:22,158 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:47:22,158 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-26 10:47:22,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-26 10:47:22,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:22,168 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:47:22,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:47:22,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:22,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-26 10:47:22,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:22,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:22,559 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 [2023-11-26 10:47:22,559 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:47:23,154 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2023-11-26 10:47:23,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-26 10:47:23,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:47:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2023-11-26 10:47:23,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2023-11-26 10:47:23,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:23,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2023-11-26 10:47:23,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:23,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2023-11-26 10:47:23,161 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:23,162 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2023-11-26 10:47:23,180 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-26 10:47:23,196 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2023-11-26 10:47:23,196 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2023-11-26 10:47:23,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-26 10:47:23,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2023-11-26 10:47:23,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:47:23,203 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2023-11-26 10:47:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2023-11-26 10:47:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-11-26 10:47:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2023-11-26 10:47:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2023-11-26 10:47:23,223 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2023-11-26 10:47:23,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:23,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 10:47:23,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:47:23,225 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:47:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:23,489 INFO L93 Difference]: Finished difference Result 191 states and 254 transitions. [2023-11-26 10:47:23,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 254 transitions. [2023-11-26 10:47:23,494 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-26 10:47:23,499 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 246 transitions. [2023-11-26 10:47:23,499 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2023-11-26 10:47:23,500 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2023-11-26 10:47:23,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 246 transitions. [2023-11-26 10:47:23,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:47:23,500 INFO L218 hiAutomatonCegarLoop]: Abstraction has 185 states and 246 transitions. [2023-11-26 10:47:23,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 246 transitions. [2023-11-26 10:47:23,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2023-11-26 10:47:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 116 states have internal predecessors, (133), 40 states have call successors, (42), 21 states have call predecessors, (42), 26 states have return successors, (56), 34 states have call predecessors, (56), 37 states have call successors, (56) [2023-11-26 10:47:23,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2023-11-26 10:47:23,539 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 231 transitions. [2023-11-26 10:47:23,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 10:47:23,540 INFO L428 stractBuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2023-11-26 10:47:23,541 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-26 10:47:23,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 231 transitions. [2023-11-26 10:47:23,543 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-26 10:47:23,543 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:47:23,543 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:47:23,547 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-26 10:47:23,548 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:23,548 INFO L748 eck$LassoCheckResult]: Stem: 1278#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1252#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 1253#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1281#$Ultimate##0 ~n := #in~n; 1275#L10 assume !(~n < 1); 1270#L12 assume !(1 == ~n); 1221#L15 call #t~ret4 := fibo2(~n - 1);< 1229#$Ultimate##0 ~n := #in~n; 1230#L20 assume !(~n < 1); 1220#L22 assume !(1 == ~n); 1222#L25 call #t~ret6 := fibo1(~n - 1);< 1254#$Ultimate##0 ~n := #in~n; 1311#L10 assume !(~n < 1); 1308#L12 assume !(1 == ~n); 1304#L15 call #t~ret4 := fibo2(~n - 1);< 1305#$Ultimate##0 ~n := #in~n; 1309#L20 assume !(~n < 1); 1310#L22 assume !(1 == ~n); 1257#L25 call #t~ret6 := fibo1(~n - 1);< 1254#$Ultimate##0 ~n := #in~n; 1311#L10 assume !(~n < 1); 1308#L12 assume !(1 == ~n); 1304#L15 call #t~ret4 := fibo2(~n - 1);< 1305#$Ultimate##0 ~n := #in~n; 1309#L20 assume ~n < 1;#res := 0; 1307#fibo2FINAL assume true; 1303#fibo2EXIT >#52#return; 1256#L15-1 call #t~ret5 := fibo2(~n - 2);< 1258#$Ultimate##0 ~n := #in~n; 1378#L20 assume !(~n < 1); 1377#L22 assume !(1 == ~n); 1257#L25 call #t~ret6 := fibo1(~n - 1);< 1254#$Ultimate##0 ~n := #in~n; 1313#L10 assume !(~n < 1); 1318#L12 assume 1 == ~n;#res := 1; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1301#L25-1 call #t~ret7 := fibo1(~n - 2);< 1243#$Ultimate##0 ~n := #in~n; 1306#L10 assume !(~n < 1); 1302#L12 assume !(1 == ~n); 1241#L15 call #t~ret4 := fibo2(~n - 1);< 1299#$Ultimate##0 ~n := #in~n; 1298#L20 assume ~n < 1;#res := 0; 1272#fibo2FINAL assume true; 1273#fibo2EXIT >#52#return; 1242#L15-1 call #t~ret5 := fibo2(~n - 2);< 1299#$Ultimate##0 ~n := #in~n; 1298#L20 assume !(~n < 1); 1292#L22 assume 1 == ~n;#res := 1; 1293#fibo2FINAL assume true; 1364#fibo2EXIT >#54#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1383#fibo1FINAL assume true; 1382#fibo1EXIT >#50#return; 1248#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1371#fibo2FINAL assume true; 1368#fibo2EXIT >#54#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1383#fibo1FINAL assume true; 1382#fibo1EXIT >#48#return; 1247#L25-1 call #t~ret7 := fibo1(~n - 2);< 1239#$Ultimate##0 ~n := #in~n; 1249#L10 assume !(~n < 1); 1267#L12 assume !(1 == ~n); 1269#L15 call #t~ret4 := fibo2(~n - 1);< 1276#$Ultimate##0 ~n := #in~n; 1373#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1366#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#$Ultimate##0 ~n := #in~n; 1373#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#54#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1383#fibo1FINAL assume true; 1382#fibo1EXIT >#50#return; 1248#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1371#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1366#L15-1 [2023-11-26 10:47:23,548 INFO L750 eck$LassoCheckResult]: Loop: 1366#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#$Ultimate##0 ~n := #in~n; 1373#L20 assume !(~n < 1); 1374#L22 assume !(1 == ~n); 1246#L25 call #t~ret6 := fibo1(~n - 1);< 1239#$Ultimate##0 ~n := #in~n; 1249#L10 assume !(~n < 1); 1267#L12 assume !(1 == ~n); 1269#L15 call #t~ret4 := fibo2(~n - 1);< 1276#$Ultimate##0 ~n := #in~n; 1373#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1366#L15-1 [2023-11-26 10:47:23,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:23,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1380034771, now seen corresponding path program 1 times [2023-11-26 10:47:23,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:23,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279654937] [2023-11-26 10:47:23,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:23,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:23,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:23,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:24,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:24,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:24,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:24,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 10:47:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:24,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 23 proven. 71 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-26 10:47:24,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:24,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279654937] [2023-11-26 10:47:24,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279654937] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:24,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603391787] [2023-11-26 10:47:24,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:24,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:24,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:24,195 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:24,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-26 10:47:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:24,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 10:47:24,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-26 10:47:24,441 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-26 10:47:25,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603391787] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:25,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:25,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 30 [2023-11-26 10:47:25,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155358003] [2023-11-26 10:47:25,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:25,150 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 10:47:25,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:25,151 INFO L85 PathProgramCache]: Analyzing trace with hash -441960109, now seen corresponding path program 1 times [2023-11-26 10:47:25,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:25,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284311195] [2023-11-26 10:47:25,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:25,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:47:25,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:25,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284311195] [2023-11-26 10:47:25,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284311195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:47:25,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:47:25,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:47:25,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926243921] [2023-11-26 10:47:25,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:47:25,209 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:47:25,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:47:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:47:25,210 INFO L87 Difference]: Start difference. First operand 172 states and 231 transitions. cyclomatic complexity: 64 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:47:25,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:25,291 INFO L93 Difference]: Finished difference Result 189 states and 242 transitions. [2023-11-26 10:47:25,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 242 transitions. [2023-11-26 10:47:25,295 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-26 10:47:25,298 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 177 states and 228 transitions. [2023-11-26 10:47:25,299 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 115 [2023-11-26 10:47:25,299 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2023-11-26 10:47:25,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 228 transitions. [2023-11-26 10:47:25,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:47:25,300 INFO L218 hiAutomatonCegarLoop]: Abstraction has 177 states and 228 transitions. [2023-11-26 10:47:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 228 transitions. [2023-11-26 10:47:25,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 163. [2023-11-26 10:47:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 113 states have internal predecessors, (124), 35 states have call successors, (36), 20 states have call predecessors, (36), 26 states have return successors, (52), 29 states have call predecessors, (52), 32 states have call successors, (52) [2023-11-26 10:47:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 212 transitions. [2023-11-26 10:47:25,314 INFO L240 hiAutomatonCegarLoop]: Abstraction has 163 states and 212 transitions. [2023-11-26 10:47:25,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:47:25,316 INFO L428 stractBuchiCegarLoop]: Abstraction has 163 states and 212 transitions. [2023-11-26 10:47:25,316 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-26 10:47:25,316 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 163 states and 212 transitions. [2023-11-26 10:47:25,318 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-26 10:47:25,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:47:25,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:47:25,323 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-26 10:47:25,323 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-26 10:47:25,323 INFO L748 eck$LassoCheckResult]: Stem: 2359#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2325#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2326#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2361#$Ultimate##0 ~n := #in~n; 2355#L10 assume !(~n < 1); 2350#L12 assume !(1 == ~n); 2307#L15 call #t~ret4 := fibo2(~n - 1);< 2311#$Ultimate##0 ~n := #in~n; 2312#L20 assume !(~n < 1); 2306#L22 assume !(1 == ~n); 2308#L25 call #t~ret6 := fibo1(~n - 1);< 2330#$Ultimate##0 ~n := #in~n; 2333#L10 assume !(~n < 1); 2391#L12 assume !(1 == ~n); 2334#L15 call #t~ret4 := fibo2(~n - 1);< 2387#$Ultimate##0 ~n := #in~n; 2393#L20 assume !(~n < 1); 2392#L22 assume !(1 == ~n); 2331#L25 call #t~ret6 := fibo1(~n - 1);< 2330#$Ultimate##0 ~n := #in~n; 2333#L10 assume !(~n < 1); 2391#L12 assume !(1 == ~n); 2334#L15 call #t~ret4 := fibo2(~n - 1);< 2387#$Ultimate##0 ~n := #in~n; 2393#L20 assume !(~n < 1); 2392#L22 assume 1 == ~n;#res := 1; 2389#fibo2FINAL assume true; 2360#fibo2EXIT >#52#return; 2335#L15-1 call #t~ret5 := fibo2(~n - 2);< 2338#$Ultimate##0 ~n := #in~n; 2357#L20 assume !(~n < 1); 2358#L22 assume !(1 == ~n); 2331#L25 call #t~ret6 := fibo1(~n - 1);< 2330#$Ultimate##0 ~n := #in~n; 2332#L10 assume !(~n < 1); 2396#L12 assume 1 == ~n;#res := 1; 2395#fibo1FINAL assume true; 2394#fibo1EXIT >#48#return; 2348#L25-1 call #t~ret7 := fibo1(~n - 2);< 2322#$Ultimate##0 ~n := #in~n; 2388#L10 assume !(~n < 1); 2380#L12 assume !(1 == ~n); 2321#L15 call #t~ret4 := fibo2(~n - 1);< 2377#$Ultimate##0 ~n := #in~n; 2375#L20 assume !(~n < 1); 2371#L22 assume 1 == ~n;#res := 1; 2372#fibo2FINAL assume true; 2430#fibo2EXIT >#52#return; 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume ~n < 1;#res := 0; 2443#fibo2FINAL assume true; 2451#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#50#return; 2434#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2428#fibo2FINAL assume true; 2419#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#48#return; 2423#L25-1 call #t~ret7 := fibo1(~n - 2);< 2439#$Ultimate##0 ~n := #in~n; 2447#L10 assume !(~n < 1); 2435#L12 assume !(1 == ~n); 2420#L15 call #t~ret4 := fibo2(~n - 1);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume 1 == ~n;#res := 1; 2440#fibo2FINAL assume true; 2429#fibo2EXIT >#52#return; 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume ~n < 1;#res := 0; 2443#fibo2FINAL assume true; 2451#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#50#return; 2434#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2428#fibo2FINAL assume true; 2419#fibo2EXIT >#52#return; 2416#L15-1 [2023-11-26 10:47:25,324 INFO L750 eck$LassoCheckResult]: Loop: 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume !(1 == ~n); 2425#L25 call #t~ret6 := fibo1(~n - 1);< 2439#$Ultimate##0 ~n := #in~n; 2447#L10 assume !(~n < 1); 2435#L12 assume !(1 == ~n); 2420#L15 call #t~ret4 := fibo2(~n - 1);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume !(1 == ~n); 2425#L25 call #t~ret6 := fibo1(~n - 1);< 2439#$Ultimate##0 ~n := #in~n; 2447#L10 assume !(~n < 1); 2435#L12 assume !(1 == ~n); 2420#L15 call #t~ret4 := fibo2(~n - 1);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume 1 == ~n;#res := 1; 2440#fibo2FINAL assume true; 2429#fibo2EXIT >#52#return; 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume ~n < 1;#res := 0; 2443#fibo2FINAL assume true; 2451#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#48#return; 2423#L25-1 call #t~ret7 := fibo1(~n - 2);< 2439#$Ultimate##0 ~n := #in~n; 2447#L10 assume !(~n < 1); 2435#L12 assume !(1 == ~n); 2420#L15 call #t~ret4 := fibo2(~n - 1);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume 1 == ~n;#res := 1; 2440#fibo2FINAL assume true; 2429#fibo2EXIT >#52#return; 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume ~n < 1;#res := 0; 2443#fibo2FINAL assume true; 2451#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#50#return; 2434#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2428#fibo2FINAL assume true; 2419#fibo2EXIT >#52#return; 2416#L15-1 [2023-11-26 10:47:25,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:25,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1159629665, now seen corresponding path program 2 times [2023-11-26 10:47:25,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:25,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607409077] [2023-11-26 10:47:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:25,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:47:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:25,831 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 23 proven. 75 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-26 10:47:25,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:25,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607409077] [2023-11-26 10:47:25,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607409077] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:25,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575731255] [2023-11-26 10:47:25,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:47:25,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:25,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:25,833 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:25,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-26 10:47:25,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:47:25,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:47:25,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 10:47:25,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 23 proven. 92 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-26 10:47:26,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 23 proven. 93 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-26 10:47:26,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575731255] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:26,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:26,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 21 [2023-11-26 10:47:26,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234256514] [2023-11-26 10:47:26,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:26,607 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 10:47:26,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:26,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1108085027, now seen corresponding path program 1 times [2023-11-26 10:47:26,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:26,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321464265] [2023-11-26 10:47:26,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:26,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:26,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:26,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:26,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:26,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:26,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:26,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:26,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:26,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-26 10:47:26,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:26,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321464265] [2023-11-26 10:47:26,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321464265] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:26,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939011786] [2023-11-26 10:47:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:26,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:26,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:26,864 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:26,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-26 10:47:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:26,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 10:47:26,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 10:47:27,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 10:47:27,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939011786] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:27,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:27,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-26 10:47:27,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983768715] [2023-11-26 10:47:27,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:27,533 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:47:27,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:27,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-26 10:47:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-11-26 10:47:27,535 INFO L87 Difference]: Start difference. First operand 163 states and 212 transitions. cyclomatic complexity: 54 Second operand has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 18 states have internal predecessors, (48), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-26 10:47:27,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:27,875 INFO L93 Difference]: Finished difference Result 121 states and 150 transitions. [2023-11-26 10:47:27,875 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 150 transitions. [2023-11-26 10:47:27,877 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-26 10:47:27,879 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 97 states and 120 transitions. [2023-11-26 10:47:27,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2023-11-26 10:47:27,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2023-11-26 10:47:27,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 120 transitions. [2023-11-26 10:47:27,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:47:27,880 INFO L218 hiAutomatonCegarLoop]: Abstraction has 97 states and 120 transitions. [2023-11-26 10:47:27,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 120 transitions. [2023-11-26 10:47:27,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2023-11-26 10:47:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 63 states have internal predecessors, (69), 18 states have call successors, (18), 13 states have call predecessors, (18), 14 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) [2023-11-26 10:47:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2023-11-26 10:47:27,890 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 116 transitions. [2023-11-26 10:47:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-26 10:47:27,892 INFO L428 stractBuchiCegarLoop]: Abstraction has 93 states and 116 transitions. [2023-11-26 10:47:27,893 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-26 10:47:27,893 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states and 116 transitions. [2023-11-26 10:47:27,894 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-26 10:47:27,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:47:27,895 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:47:27,896 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:27,900 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:27,900 INFO L748 eck$LassoCheckResult]: Stem: 3778#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 3751#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 3752#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 3781#$Ultimate##0 ~n := #in~n; 3783#L10 assume !(~n < 1); 3772#L12 assume !(1 == ~n); 3760#L15 call #t~ret4 := fibo2(~n - 1);< 3799#$Ultimate##0 ~n := #in~n; 3798#L20 assume !(~n < 1); 3797#L22 assume !(1 == ~n); 3745#L25 call #t~ret6 := fibo1(~n - 1);< 3754#$Ultimate##0 ~n := #in~n; 3756#L10 assume !(~n < 1); 3775#L12 assume !(1 == ~n); 3737#L15 call #t~ret4 := fibo2(~n - 1);< 3742#$Ultimate##0 ~n := #in~n; 3743#L20 assume !(~n < 1); 3736#L22 assume !(1 == ~n); 3738#L25 call #t~ret6 := fibo1(~n - 1);< 3754#$Ultimate##0 ~n := #in~n; 3755#L10 assume !(~n < 1); 3784#L12 assume 1 == ~n;#res := 1; 3744#fibo1FINAL assume true; 3746#fibo1EXIT >#48#return; 3747#L25-1 call #t~ret7 := fibo1(~n - 2);< 3748#$Ultimate##0 ~n := #in~n; 3753#L10 assume ~n < 1;#res := 0; 3771#fibo1FINAL assume true; 3749#fibo1EXIT >#50#return; 3750#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3823#fibo2FINAL assume true; 3814#fibo2EXIT >#52#return; 3768#L15-1 [2023-11-26 10:47:27,900 INFO L750 eck$LassoCheckResult]: Loop: 3768#L15-1 call #t~ret5 := fibo2(~n - 2);< 3811#$Ultimate##0 ~n := #in~n; 3825#L20 assume !(~n < 1); 3785#L22 assume !(1 == ~n); 3765#L25 call #t~ret6 := fibo1(~n - 1);< 3759#$Ultimate##0 ~n := #in~n; 3786#L10 assume !(~n < 1); 3788#L12 assume !(1 == ~n); 3740#L15 call #t~ret4 := fibo2(~n - 1);< 3739#$Ultimate##0 ~n := #in~n; 3741#L20 assume !(~n < 1); 3785#L22 assume !(1 == ~n); 3765#L25 call #t~ret6 := fibo1(~n - 1);< 3759#$Ultimate##0 ~n := #in~n; 3786#L10 assume !(~n < 1); 3788#L12 assume 1 == ~n;#res := 1; 3791#fibo1FINAL assume true; 3792#fibo1EXIT >#48#return; 3793#L25-1 call #t~ret7 := fibo1(~n - 2);< 3812#$Ultimate##0 ~n := #in~n; 3819#L10 assume ~n < 1;#res := 0; 3787#fibo1FINAL assume true; 3824#fibo1EXIT >#50#return; 3794#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3822#fibo2FINAL assume true; 3813#fibo2EXIT >#52#return; 3768#L15-1 [2023-11-26 10:47:27,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:27,901 INFO L85 PathProgramCache]: Analyzing trace with hash -658151768, now seen corresponding path program 1 times [2023-11-26 10:47:27,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:27,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075852577] [2023-11-26 10:47:27,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:27,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:27,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:47:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:27,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:47:27,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:27,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1404661389, now seen corresponding path program 1 times [2023-11-26 10:47:27,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:27,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241171664] [2023-11-26 10:47:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:27,937 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:47:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:27,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:47:27,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:27,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1060289932, now seen corresponding path program 1 times [2023-11-26 10:47:27,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:27,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640836827] [2023-11-26 10:47:27,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:27,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:28,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 10:47:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:28,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:28,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 10:47:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:28,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:28,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-26 10:47:28,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:28,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640836827] [2023-11-26 10:47:28,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640836827] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:28,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003986974] [2023-11-26 10:47:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:28,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:28,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:28,177 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:28,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-26 10:47:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:28,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:47:28,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:28,316 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 10:47:28,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-26 10:47:28,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003986974] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:28,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:28,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2023-11-26 10:47:28,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053831092] [2023-11-26 10:47:28,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:28,797 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:47:28,797 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:47:28,797 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:47:28,798 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:47:28,798 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:47:28,798 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:28,798 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:47:28,798 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:47:28,798 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2023-11-26 10:47:28,798 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:47:28,798 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:47:28,799 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:28,802 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:28,805 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:28,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:28,811 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:28,814 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:28,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:28,822 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:28,825 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:28,877 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:47:28,877 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:47:28,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:28,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:28,881 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:28,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:28,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:28,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-26 10:47:28,912 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:28,912 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:28,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:28,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:28,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:28,919 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:28,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:28,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:28,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-26 10:47:28,967 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:28,967 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=3} Honda state: {fibo1_#in~n=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:28,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:28,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:28,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:28,978 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:28,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:28,983 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:28,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-26 10:47:29,018 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:29,019 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:29,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:29,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,030 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:29,034 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:29,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-26 10:47:29,058 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:29,059 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:29,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:29,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,070 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:29,084 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:29,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-26 10:47:29,122 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:29,123 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:29,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:29,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,133 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,137 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:29,137 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:29,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-26 10:47:29,175 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:29,175 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=1} Honda state: {fibo1_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:29,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:29,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,185 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:29,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:29,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-26 10:47:29,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:29,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,217 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:47:29,223 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:29,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-26 10:47:29,254 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:47:29,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:29,263 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:47:29,263 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:47:29,263 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:47:29,263 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:47:29,263 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:47:29,263 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,263 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:47:29,263 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:47:29,263 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2023-11-26 10:47:29,263 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:47:29,264 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:47:29,264 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:29,271 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:29,274 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:29,276 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:29,278 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:29,279 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:29,282 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:29,285 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:29,290 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:29,363 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:47:29,363 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:47:29,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,365 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-26 10:47:29,371 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 [2023-11-26 10:47:29,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:29,385 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:29,385 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:29,385 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:29,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:29,387 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:29,387 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:29,396 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:29,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2023-11-26 10:47:29,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,404 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-26 10:47:29,412 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 [2023-11-26 10:47:29,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:29,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:29,423 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:29,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:29,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:29,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:29,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:29,425 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:29,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2023-11-26 10:47:29,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,429 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-26 10:47:29,433 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 [2023-11-26 10:47:29,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:29,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:29,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:29,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:29,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:29,445 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:29,445 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:29,447 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:29,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2023-11-26 10:47:29,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,453 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-26 10:47:29,456 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 10:47:29,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:29,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:29,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:29,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:29,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:29,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:29,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:29,486 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:29,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2023-11-26 10:47:29,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,490 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-26 10:47:29,493 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 10:47:29,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:29,504 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:29,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:29,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:29,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:29,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:29,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:29,507 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:29,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2023-11-26 10:47:29,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,511 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-11-26 10:47:29,519 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 [2023-11-26 10:47:29,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:29,533 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:29,533 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:29,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:29,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:29,535 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:29,535 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:29,550 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:29,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:29,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,556 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2023-11-26 10:47:29,559 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 [2023-11-26 10:47:29,572 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:29,572 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:29,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:29,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:29,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:29,573 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:29,574 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:29,597 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:29,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:29,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,603 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,611 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 [2023-11-26 10:47:29,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:29,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:29,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:29,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:29,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:29,625 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:29,625 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:29,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2023-11-26 10:47:29,642 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:47:29,646 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 10:47:29,647 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 10:47:29,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:29,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:29,650 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:29,652 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:47:29,652 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:47:29,652 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:47:29,652 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-26 10:47:29,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2023-11-26 10:47:29,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:29,657 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:47:29,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:29,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 10:47:29,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:29,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-26 10:47:30,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:30,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:47:30,272 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2023-11-26 10:47:30,272 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 116 transitions. cyclomatic complexity: 25 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 10:47:30,811 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 116 transitions. cyclomatic complexity: 25. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 323 states and 426 transitions. Complement of second has 46 states. [2023-11-26 10:47:30,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2023-11-26 10:47:30,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 10:47:30,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2023-11-26 10:47:30,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2023-11-26 10:47:30,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:30,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2023-11-26 10:47:30,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:30,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2023-11-26 10:47:30,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:30,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 323 states and 426 transitions. [2023-11-26 10:47:30,824 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2023-11-26 10:47:30,830 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 323 states to 280 states and 379 transitions. [2023-11-26 10:47:30,830 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 183 [2023-11-26 10:47:30,831 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 187 [2023-11-26 10:47:30,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 280 states and 379 transitions. [2023-11-26 10:47:30,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:47:30,834 INFO L218 hiAutomatonCegarLoop]: Abstraction has 280 states and 379 transitions. [2023-11-26 10:47:30,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states and 379 transitions. [2023-11-26 10:47:30,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 246. [2023-11-26 10:47:30,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 156 states have (on average 1.1666666666666667) internal successors, (182), 161 states have internal predecessors, (182), 50 states have call successors, (51), 33 states have call predecessors, (51), 40 states have return successors, (92), 51 states have call predecessors, (92), 47 states have call successors, (92) [2023-11-26 10:47:30,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 325 transitions. [2023-11-26 10:47:30,852 INFO L240 hiAutomatonCegarLoop]: Abstraction has 246 states and 325 transitions. [2023-11-26 10:47:30,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:30,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:47:30,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:47:30,853 INFO L87 Difference]: Start difference. First operand 246 states and 325 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 10:47:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:31,054 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2023-11-26 10:47:31,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 148 transitions. [2023-11-26 10:47:31,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-26 10:47:31,058 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 145 transitions. [2023-11-26 10:47:31,058 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2023-11-26 10:47:31,058 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2023-11-26 10:47:31,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 145 transitions. [2023-11-26 10:47:31,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:47:31,061 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 145 transitions. [2023-11-26 10:47:31,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 145 transitions. [2023-11-26 10:47:31,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2023-11-26 10:47:31,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 76 states have (on average 1.131578947368421) internal successors, (86), 80 states have internal predecessors, (86), 20 states have call successors, (20), 15 states have call predecessors, (20), 20 states have return successors, (33), 20 states have call predecessors, (33), 17 states have call successors, (33) [2023-11-26 10:47:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2023-11-26 10:47:31,070 INFO L240 hiAutomatonCegarLoop]: Abstraction has 116 states and 139 transitions. [2023-11-26 10:47:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:47:31,074 INFO L428 stractBuchiCegarLoop]: Abstraction has 116 states and 139 transitions. [2023-11-26 10:47:31,074 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-26 10:47:31,074 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 139 transitions. [2023-11-26 10:47:31,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-26 10:47:31,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:47:31,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:47:31,085 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:31,085 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:31,089 INFO L748 eck$LassoCheckResult]: Stem: 5254#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5231#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5232#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5257#$Ultimate##0 ~n := #in~n; 5258#L10 assume !(~n < 1); 5245#L12 assume !(1 == ~n); 5210#L15 call #t~ret4 := fibo2(~n - 1);< 5215#$Ultimate##0 ~n := #in~n; 5216#L20 assume !(~n < 1); 5209#L22 assume !(1 == ~n); 5211#L25 call #t~ret6 := fibo1(~n - 1);< 5228#$Ultimate##0 ~n := #in~n; 5230#L10 assume !(~n < 1); 5248#L12 assume !(1 == ~n); 5242#L15 call #t~ret4 := fibo2(~n - 1);< 5251#$Ultimate##0 ~n := #in~n; 5300#L20 assume !(~n < 1); 5299#L22 assume !(1 == ~n); 5224#L25 call #t~ret6 := fibo1(~n - 1);< 5228#$Ultimate##0 ~n := #in~n; 5230#L10 assume !(~n < 1); 5248#L12 assume !(1 == ~n); 5242#L15 call #t~ret4 := fibo2(~n - 1);< 5251#$Ultimate##0 ~n := #in~n; 5300#L20 assume !(~n < 1); 5299#L22 assume !(1 == ~n); 5224#L25 call #t~ret6 := fibo1(~n - 1);< 5228#$Ultimate##0 ~n := #in~n; 5229#L10 assume !(~n < 1); 5261#L12 assume 1 == ~n;#res := 1; 5267#fibo1FINAL assume true; 5298#fibo1EXIT >#48#return; 5218#L25-1 call #t~ret7 := fibo1(~n - 2);< 5226#$Ultimate##0 ~n := #in~n; 5227#L10 assume ~n < 1;#res := 0; 5217#fibo1FINAL assume true; 5219#fibo1EXIT >#50#return; 5294#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5292#fibo2FINAL assume true; 5288#fibo2EXIT >#52#return; 5207#L15-1 call #t~ret5 := fibo2(~n - 2);< 5284#$Ultimate##0 ~n := #in~n; 5252#L20 assume ~n < 1;#res := 0; 5208#fibo2FINAL assume true; 5246#fibo2EXIT >#54#return; 5282#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5280#fibo1FINAL assume true; 5274#fibo1EXIT >#48#return; 5235#L25-1 [2023-11-26 10:47:31,090 INFO L750 eck$LassoCheckResult]: Loop: 5235#L25-1 call #t~ret7 := fibo1(~n - 2);< 5241#$Ultimate##0 ~n := #in~n; 5263#L10 assume !(~n < 1); 5259#L12 assume !(1 == ~n); 5221#L15 call #t~ret4 := fibo2(~n - 1);< 5266#$Ultimate##0 ~n := #in~n; 5279#L20 assume !(~n < 1); 5277#L22 assume !(1 == ~n); 5236#L25 call #t~ret6 := fibo1(~n - 1);< 5241#$Ultimate##0 ~n := #in~n; 5263#L10 assume !(~n < 1); 5259#L12 assume !(1 == ~n); 5221#L15 call #t~ret4 := fibo2(~n - 1);< 5266#$Ultimate##0 ~n := #in~n; 5279#L20 assume !(~n < 1); 5277#L22 assume !(1 == ~n); 5236#L25 call #t~ret6 := fibo1(~n - 1);< 5241#$Ultimate##0 ~n := #in~n; 5263#L10 assume !(~n < 1); 5259#L12 assume 1 == ~n;#res := 1; 5260#fibo1FINAL assume true; 5317#fibo1EXIT >#48#return; 5220#L25-1 call #t~ret7 := fibo1(~n - 2);< 5222#$Ultimate##0 ~n := #in~n; 5319#L10 assume ~n < 1;#res := 0; 5269#fibo1FINAL assume true; 5307#fibo1EXIT >#50#return; 5233#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5234#fibo2FINAL assume true; 5289#fibo2EXIT >#52#return; 5286#L15-1 call #t~ret5 := fibo2(~n - 2);< 5287#$Ultimate##0 ~n := #in~n; 5320#L20 assume ~n < 1;#res := 0; 5314#fibo2FINAL assume true; 5313#fibo2EXIT >#54#return; 5283#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5281#fibo1FINAL assume true; 5275#fibo1EXIT >#48#return; 5235#L25-1 [2023-11-26 10:47:31,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash 316829921, now seen corresponding path program 1 times [2023-11-26 10:47:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:31,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599222589] [2023-11-26 10:47:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:31,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 10:47:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,349 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 10:47:31,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:31,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599222589] [2023-11-26 10:47:31,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599222589] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:31,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485514962] [2023-11-26 10:47:31,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:31,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:31,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:31,351 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:31,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-26 10:47:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 10:47:31,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 10:47:31,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:31,808 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 10:47:31,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485514962] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:31,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:31,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2023-11-26 10:47:31,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932219380] [2023-11-26 10:47:31,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:31,810 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 10:47:31,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:31,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1700861918, now seen corresponding path program 1 times [2023-11-26 10:47:31,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:31,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535066982] [2023-11-26 10:47:31,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:31,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 10:47:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:47:31,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:31,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535066982] [2023-11-26 10:47:31,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535066982] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:31,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943515066] [2023-11-26 10:47:31,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:31,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:31,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:31,946 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:31,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-26 10:47:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:32,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:47:32,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 10:47:32,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 10:47:32,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943515066] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:32,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:32,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2023-11-26 10:47:32,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185226527] [2023-11-26 10:47:32,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:32,388 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:47:32,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:32,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 10:47:32,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:47:32,389 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. cyclomatic complexity: 25 Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-26 10:47:32,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:32,555 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2023-11-26 10:47:32,555 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2023-11-26 10:47:32,557 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-11-26 10:47:32,559 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2023-11-26 10:47:32,559 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2023-11-26 10:47:32,559 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2023-11-26 10:47:32,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2023-11-26 10:47:32,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:47:32,560 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 143 transitions. [2023-11-26 10:47:32,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2023-11-26 10:47:32,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2023-11-26 10:47:32,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 81 states have internal predecessors, (87), 20 states have call successors, (20), 16 states have call predecessors, (20), 20 states have return successors, (32), 20 states have call predecessors, (32), 17 states have call successors, (32) [2023-11-26 10:47:32,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2023-11-26 10:47:32,565 INFO L240 hiAutomatonCegarLoop]: Abstraction has 118 states and 139 transitions. [2023-11-26 10:47:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:47:32,567 INFO L428 stractBuchiCegarLoop]: Abstraction has 118 states and 139 transitions. [2023-11-26 10:47:32,567 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-26 10:47:32,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 139 transitions. [2023-11-26 10:47:32,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-11-26 10:47:32,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:47:32,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:47:32,571 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:32,571 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:32,571 INFO L748 eck$LassoCheckResult]: Stem: 6157#$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(18, 2);call #Ultimate.allocInit(12, 3); 6135#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 6136#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6159#$Ultimate##0 ~n := #in~n; 6162#L10 assume !(~n < 1); 6150#L12 assume !(1 == ~n); 6118#L15 call #t~ret4 := fibo2(~n - 1);< 6176#$Ultimate##0 ~n := #in~n; 6193#L20 assume !(~n < 1); 6117#L22 assume !(1 == ~n); 6119#L25 call #t~ret6 := fibo1(~n - 1);< 6139#$Ultimate##0 ~n := #in~n; 6141#L10 assume !(~n < 1); 6154#L12 assume !(1 == ~n); 6124#L15 call #t~ret4 := fibo2(~n - 1);< 6123#$Ultimate##0 ~n := #in~n; 6125#L20 assume !(~n < 1); 6156#L22 assume !(1 == ~n); 6133#L25 call #t~ret6 := fibo1(~n - 1);< 6139#$Ultimate##0 ~n := #in~n; 6141#L10 assume !(~n < 1); 6154#L12 assume !(1 == ~n); 6124#L15 call #t~ret4 := fibo2(~n - 1);< 6123#$Ultimate##0 ~n := #in~n; 6125#L20 assume !(~n < 1); 6156#L22 assume !(1 == ~n); 6133#L25 call #t~ret6 := fibo1(~n - 1);< 6139#$Ultimate##0 ~n := #in~n; 6140#L10 assume !(~n < 1); 6170#L12 assume 1 == ~n;#res := 1; 6174#fibo1FINAL assume true; 6220#fibo1EXIT >#48#return; 6127#L25-1 call #t~ret7 := fibo1(~n - 2);< 6218#$Ultimate##0 ~n := #in~n; 6153#L10 assume ~n < 1;#res := 0; 6126#fibo1FINAL assume true; 6128#fibo1EXIT >#50#return; 6216#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6215#fibo2FINAL assume true; 6192#fibo2EXIT >#52#return; 6115#L15-1 call #t~ret5 := fibo2(~n - 2);< 6191#$Ultimate##0 ~n := #in~n; 6155#L20 assume !(~n < 1); 6114#L22 assume 1 == ~n;#res := 1; 6116#fibo2FINAL assume true; 6190#fibo2EXIT >#54#return; 6188#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6186#fibo1FINAL assume true; 6183#fibo1EXIT >#48#return; 6164#L25-1 [2023-11-26 10:47:32,571 INFO L750 eck$LassoCheckResult]: Loop: 6164#L25-1 call #t~ret7 := fibo1(~n - 2);< 6131#$Ultimate##0 ~n := #in~n; 6228#L10 assume !(~n < 1); 6163#L12 assume !(1 == ~n); 6147#L15 call #t~ret4 := fibo2(~n - 1);< 6172#$Ultimate##0 ~n := #in~n; 6171#L20 assume !(~n < 1); 6168#L22 assume !(1 == ~n); 6165#L25 call #t~ret6 := fibo1(~n - 1);< 6143#$Ultimate##0 ~n := #in~n; 6177#L10 assume !(~n < 1); 6163#L12 assume !(1 == ~n); 6147#L15 call #t~ret4 := fibo2(~n - 1);< 6172#$Ultimate##0 ~n := #in~n; 6171#L20 assume !(~n < 1); 6168#L22 assume !(1 == ~n); 6165#L25 call #t~ret6 := fibo1(~n - 1);< 6143#$Ultimate##0 ~n := #in~n; 6177#L10 assume !(~n < 1); 6163#L12 assume 1 == ~n;#res := 1; 6167#fibo1FINAL assume true; 6223#fibo1EXIT >#48#return; 6181#L25-1 call #t~ret7 := fibo1(~n - 2);< 6222#$Ultimate##0 ~n := #in~n; 6229#L10 assume ~n < 1;#res := 0; 6227#fibo1FINAL assume true; 6221#fibo1EXIT >#50#return; 6219#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6217#fibo2FINAL assume true; 6213#fibo2EXIT >#52#return; 6158#L15-1 call #t~ret5 := fibo2(~n - 2);< 6203#$Ultimate##0 ~n := #in~n; 6208#L20 assume !(~n < 1); 6206#L22 assume 1 == ~n;#res := 1; 6205#fibo2FINAL assume true; 6202#fibo2EXIT >#54#return; 6201#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6185#fibo1FINAL assume true; 6182#fibo1EXIT >#48#return; 6164#L25-1 [2023-11-26 10:47:32,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1955236566, now seen corresponding path program 1 times [2023-11-26 10:47:32,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:32,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843632168] [2023-11-26 10:47:32,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:32,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:32,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 10:47:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:32,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:32,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 10:47:32,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:32,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843632168] [2023-11-26 10:47:32,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843632168] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:32,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618263563] [2023-11-26 10:47:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:32,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:32,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:32,806 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:32,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-26 10:47:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:32,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 10:47:32,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:32,964 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 10:47:32,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:33,235 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 10:47:33,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618263563] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:33,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:33,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2023-11-26 10:47:33,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905104648] [2023-11-26 10:47:33,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:33,237 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 10:47:33,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:33,237 INFO L85 PathProgramCache]: Analyzing trace with hash -463668299, now seen corresponding path program 1 times [2023-11-26 10:47:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:33,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857286406] [2023-11-26 10:47:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:33,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:33,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:47:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:33,252 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:47:33,669 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:47:33,669 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:47:33,669 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:47:33,670 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:47:33,670 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:47:33,670 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:33,670 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:47:33,670 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:47:33,670 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration8_Loop [2023-11-26 10:47:33,670 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:47:33,670 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:47:33,671 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,675 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,681 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,683 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,686 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,689 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,691 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,694 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,696 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,746 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:47:33,746 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:47:33,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:33,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:33,753 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:33,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:33,755 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:33,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-26 10:47:33,793 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:33,793 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=4} Honda state: {fibo2_#in~n=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:33,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:33,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:33,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:33,798 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:33,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:33,803 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:33,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-26 10:47:33,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:33,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:33,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:33,831 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:33,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:47:33,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:33,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-26 10:47:33,866 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:47:33,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:33,870 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:47:33,870 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:47:33,870 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:47:33,870 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:47:33,870 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:47:33,871 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:33,871 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:47:33,871 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:47:33,871 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration8_Loop [2023-11-26 10:47:33,871 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:47:33,871 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:47:33,872 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,876 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,878 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,889 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,891 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,894 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,896 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,898 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,900 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:33,949 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:47:33,949 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:47:33,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:33,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:33,950 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:33,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-26 10:47:33,953 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 [2023-11-26 10:47:33,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:33,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:33,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:33,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:33,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:33,964 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:33,964 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:33,972 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:33,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:33,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:33,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:33,980 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:33,983 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 [2023-11-26 10:47:33,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:33,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:33,996 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:33,996 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:33,996 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:33,997 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:33,997 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:33,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-26 10:47:34,010 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:34,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:34,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:34,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:34,016 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:34,023 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 10:47:34,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:34,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:34,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:34,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:34,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:34,037 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:34,037 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:34,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2023-11-26 10:47:34,046 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:47:34,050 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 10:47:34,050 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 10:47:34,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:34,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:34,058 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:34,059 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:47:34,059 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:47:34,059 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:47:34,059 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-26 10:47:34,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2023-11-26 10:47:34,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:34,063 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:47:34,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:34,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-26 10:47:34,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:34,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:34,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-26 10:47:34,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:47:34,874 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 11 loop predicates [2023-11-26 10:47:34,875 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-26 10:47:35,086 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 142 states and 165 transitions. Complement of second has 13 states. [2023-11-26 10:47:35,087 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 [2023-11-26 10:47:35,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-26 10:47:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2023-11-26 10:47:35,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 49 letters. Loop has 39 letters. [2023-11-26 10:47:35,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:35,089 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 10:47:35,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:35,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-26 10:47:35,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:35,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-26 10:47:35,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:47:35,790 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 11 loop predicates [2023-11-26 10:47:35,790 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-26 10:47:35,998 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 142 states and 165 transitions. Complement of second has 13 states. [2023-11-26 10:47:35,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-26 10:47:36,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-26 10:47:36,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2023-11-26 10:47:36,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 49 letters. Loop has 39 letters. [2023-11-26 10:47:36,001 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:36,001 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 10:47:36,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:36,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-26 10:47:36,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:36,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-26 10:47:36,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 10:47:36,731 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 11 loop predicates [2023-11-26 10:47:36,731 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-26 10:47:37,319 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 559 states and 690 transitions. Complement of second has 139 states. [2023-11-26 10:47:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 15 states 2 stem states 12 non-accepting loop states 1 accepting loop states [2023-11-26 10:47:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-26 10:47:37,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 81 transitions. [2023-11-26 10:47:37,321 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 81 transitions. Stem has 49 letters. Loop has 39 letters. [2023-11-26 10:47:37,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:37,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 81 transitions. Stem has 88 letters. Loop has 39 letters. [2023-11-26 10:47:37,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:37,325 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 81 transitions. Stem has 49 letters. Loop has 78 letters. [2023-11-26 10:47:37,327 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:37,328 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 559 states and 690 transitions. [2023-11-26 10:47:37,336 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2023-11-26 10:47:37,343 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 559 states to 402 states and 496 transitions. [2023-11-26 10:47:37,343 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 227 [2023-11-26 10:47:37,343 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 248 [2023-11-26 10:47:37,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 402 states and 496 transitions. [2023-11-26 10:47:37,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:47:37,344 INFO L218 hiAutomatonCegarLoop]: Abstraction has 402 states and 496 transitions. [2023-11-26 10:47:37,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states and 496 transitions. [2023-11-26 10:47:37,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 330. [2023-11-26 10:47:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 212 states have (on average 1.1367924528301887) internal successors, (241), 224 states have internal predecessors, (241), 62 states have call successors, (64), 43 states have call predecessors, (64), 56 states have return successors, (94), 62 states have call predecessors, (94), 59 states have call successors, (94) [2023-11-26 10:47:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 399 transitions. [2023-11-26 10:47:37,360 INFO L240 hiAutomatonCegarLoop]: Abstraction has 330 states and 399 transitions. [2023-11-26 10:47:37,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:37,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-26 10:47:37,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-11-26 10:47:37,361 INFO L87 Difference]: Start difference. First operand 330 states and 399 transitions. Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-26 10:47:37,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:37,711 INFO L93 Difference]: Finished difference Result 228 states and 240 transitions. [2023-11-26 10:47:37,711 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 240 transitions. [2023-11-26 10:47:37,714 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2023-11-26 10:47:37,716 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 117 states and 123 transitions. [2023-11-26 10:47:37,716 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2023-11-26 10:47:37,716 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 102 [2023-11-26 10:47:37,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 123 transitions. [2023-11-26 10:47:37,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:47:37,717 INFO L218 hiAutomatonCegarLoop]: Abstraction has 117 states and 123 transitions. [2023-11-26 10:47:37,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 123 transitions. [2023-11-26 10:47:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2023-11-26 10:47:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.064102564102564) internal successors, (83), 81 states have internal predecessors, (83), 21 states have call successors, (21), 18 states have call predecessors, (21), 17 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-26 10:47:37,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2023-11-26 10:47:37,721 INFO L240 hiAutomatonCegarLoop]: Abstraction has 116 states and 122 transitions. [2023-11-26 10:47:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-26 10:47:37,722 INFO L428 stractBuchiCegarLoop]: Abstraction has 116 states and 122 transitions. [2023-11-26 10:47:37,722 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-26 10:47:37,722 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 122 transitions. [2023-11-26 10:47:37,723 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2023-11-26 10:47:37,724 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:47:37,724 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:47:37,725 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:37,725 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:47:37,725 INFO L748 eck$LassoCheckResult]: Stem: 9106#$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(18, 2);call #Ultimate.allocInit(12, 3); 9084#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 9085#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 9109#$Ultimate##0 ~n := #in~n; 9110#L10 assume !(~n < 1); 9094#L12 assume !(1 == ~n); 9067#L15 call #t~ret4 := fibo2(~n - 1);< 9071#$Ultimate##0 ~n := #in~n; 9072#L20 assume !(~n < 1); 9066#L22 assume !(1 == ~n); 9068#L25 call #t~ret6 := fibo1(~n - 1);< 9080#$Ultimate##0 ~n := #in~n; 9083#L10 assume !(~n < 1); 9097#L12 assume !(1 == ~n); 9089#L15 call #t~ret4 := fibo2(~n - 1);< 9099#$Ultimate##0 ~n := #in~n; 9103#L20 assume !(~n < 1); 9104#L22 assume !(1 == ~n); 9081#L25 call #t~ret6 := fibo1(~n - 1);< 9080#$Ultimate##0 ~n := #in~n; 9082#L10 assume !(~n < 1); 9142#L12 assume 1 == ~n;#res := 1; 9141#fibo1FINAL assume true; 9138#fibo1EXIT >#48#return; 9136#L25-1 call #t~ret7 := fibo1(~n - 2);< 9137#$Ultimate##0 ~n := #in~n; 9140#L10 assume ~n < 1;#res := 0; 9139#fibo1FINAL assume true; 9135#fibo1EXIT >#50#return; 9134#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 9133#fibo2FINAL assume true; 9131#fibo2EXIT >#52#return; 9127#L15-1 call #t~ret5 := fibo2(~n - 2);< 9128#$Ultimate##0 ~n := #in~n; 9132#L20 assume !(~n < 1); 9130#L22 assume 1 == ~n;#res := 1; 9129#fibo2FINAL assume true; 9126#fibo2EXIT >#54#return; 9125#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 9124#fibo1FINAL assume true; 9123#fibo1EXIT >#48#return; 9093#L25-1 call #t~ret7 := fibo1(~n - 2);< 9122#$Ultimate##0 ~n := #in~n; 9170#L10 assume !(~n < 1); 9091#L12 assume !(1 == ~n); 9076#L15 call #t~ret4 := fibo2(~n - 1);< 9151#$Ultimate##0 ~n := #in~n; 9167#L20 assume !(~n < 1); 9164#L22 assume !(1 == ~n); 9098#L25 call #t~ret6 := fibo1(~n - 1);< 9175#$Ultimate##0 ~n := #in~n; 9178#L10 assume !(~n < 1); 9177#L12 assume !(1 == ~n); 9064#L15 [2023-11-26 10:47:37,725 INFO L750 eck$LassoCheckResult]: Loop: 9064#L15 call #t~ret4 := fibo2(~n - 1);< 9069#$Ultimate##0 ~n := #in~n; 9070#L20 assume !(~n < 1); 9063#L22 assume !(1 == ~n); 9065#L25 call #t~ret6 := fibo1(~n - 1);< 9088#$Ultimate##0 ~n := #in~n; 9153#L10 assume !(~n < 1); 9149#L12 assume !(1 == ~n); 9064#L15 [2023-11-26 10:47:37,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:37,726 INFO L85 PathProgramCache]: Analyzing trace with hash -259516613, now seen corresponding path program 2 times [2023-11-26 10:47:37,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:37,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986242955] [2023-11-26 10:47:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:37,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:37,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 10:47:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:37,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 10:47:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:37,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 10:47:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 10:47:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 10:47:37,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:47:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986242955] [2023-11-26 10:47:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986242955] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:47:37,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652816528] [2023-11-26 10:47:37,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:47:37,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:47:37,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:37,883 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:47:37,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-26 10:47:37,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:47:37,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:47:37,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 10:47:37,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 10:47:38,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:47:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-26 10:47:38,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652816528] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:47:38,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:47:38,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2023-11-26 10:47:38,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544128695] [2023-11-26 10:47:38,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:47:38,181 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 10:47:38,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:38,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1544065082, now seen corresponding path program 2 times [2023-11-26 10:47:38,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:47:38,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367724001] [2023-11-26 10:47:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:47:38,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:47:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:38,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:47:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:47:38,187 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:47:38,336 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:47:38,337 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:47:38,337 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:47:38,337 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:47:38,337 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:47:38,337 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:38,337 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:47:38,337 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:47:38,337 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2023-11-26 10:47:38,337 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:47:38,337 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:47:38,338 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:38,340 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:38,350 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:38,352 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:38,354 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:38,356 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:38,358 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:38,359 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:38,407 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:47:38,407 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:47:38,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:38,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:38,408 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:38,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2023-11-26 10:47:38,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:38,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:38,423 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:47:38,423 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-26 10:47:38,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2023-11-26 10:47:38,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:38,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:38,427 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:38,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2023-11-26 10:47:38,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:47:38,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:38,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2023-11-26 10:47:38,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:38,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:38,453 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:38,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2023-11-26 10:47:38,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:47:38,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:47:40,958 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:47:40,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2023-11-26 10:47:40,962 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:47:40,962 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:47:40,962 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:47:40,962 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:47:40,962 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:47:40,962 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:40,962 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:47:40,962 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:47:40,962 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2023-11-26 10:47:40,962 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:47:40,962 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:47:40,963 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:40,966 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:40,975 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:40,977 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:40,979 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:40,981 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:40,982 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:40,984 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:47:41,040 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:47:41,041 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:47:41,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:41,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:41,042 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:41,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2023-11-26 10:47:41,047 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 10:47:41,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:41,057 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:41,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:41,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:41,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:41,058 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:41,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:41,059 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:47:41,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2023-11-26 10:47:41,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:41,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:41,063 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:41,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2023-11-26 10:47:41,066 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 [2023-11-26 10:47:41,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:47:41,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:47:41,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:47:41,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:47:41,077 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:47:41,078 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:47:41,078 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:47:41,087 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:47:41,090 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-26 10:47:41,090 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 10:47:41,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:47:41,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:47:41,093 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:47:41,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2023-11-26 10:47:41,094 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:47:41,094 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:47:41,094 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:47:41,094 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-26 10:47:41,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2023-11-26 10:47:41,097 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:47:41,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-26 10:47:41,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:47:41,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:41,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:41,598 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 [2023-11-26 10:47:41,599 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:47:41,702 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 130 states and 137 transitions. Complement of second has 19 states. [2023-11-26 10:47:41,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-26 10:47:41,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:47:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2023-11-26 10:47:41,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 53 letters. Loop has 8 letters. [2023-11-26 10:47:41,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:41,706 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 10:47:41,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:41,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-26 10:47:41,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:47:42,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:42,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:42,198 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2023-11-26 10:47:42,198 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:47:42,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:42,381 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 136 states and 143 transitions. Complement of second has 21 states. [2023-11-26 10:47:42,382 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 [2023-11-26 10:47:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:47:42,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 20 transitions. [2023-11-26 10:47:42,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 20 transitions. Stem has 53 letters. Loop has 8 letters. [2023-11-26 10:47:42,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:42,384 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 10:47:42,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:47:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-26 10:47:42,462 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:47:42,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 10:47:42,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:47:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:47:42,854 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2023-11-26 10:47:42,854 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:47:43,009 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 189 states and 199 transitions. Complement of second has 30 states. [2023-11-26 10:47:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-26 10:47:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:47:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2023-11-26 10:47:43,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 53 letters. Loop has 8 letters. [2023-11-26 10:47:43,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:43,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-26 10:47:43,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:43,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 53 letters. Loop has 16 letters. [2023-11-26 10:47:43,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:47:43,013 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 199 transitions. [2023-11-26 10:47:43,016 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 10:47:43,016 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 0 states and 0 transitions. [2023-11-26 10:47:43,016 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-26 10:47:43,016 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-26 10:47:43,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-26 10:47:43,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:47:43,017 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 10:47:43,017 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 10:47:43,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:47:43,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:47:43,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:47:43,018 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 10:47:43,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:47:43,018 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-26 10:47:43,018 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-26 10:47:43,019 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 10:47:43,019 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 10:47:43,019 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-26 10:47:43,019 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-26 10:47:43,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-26 10:47:43,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 10:47:43,019 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 10:47:43,020 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 10:47:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 10:47:43,020 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 10:47:43,020 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-26 10:47:43,020 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-26 10:47:43,021 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-26 10:47:43,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-26 10:47:43,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 10:47:43 BoogieIcfgContainer [2023-11-26 10:47:43,029 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 10:47:43,029 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:47:43,029 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:47:43,030 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:47:43,030 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:47:17" (3/4) ... [2023-11-26 10:47:43,033 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 10:47:43,034 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:47:43,034 INFO L158 Benchmark]: Toolchain (without parser) took 25878.17ms. Allocated memory was 138.4MB in the beginning and 281.0MB in the end (delta: 142.6MB). Free memory was 75.5MB in the beginning and 171.5MB in the end (delta: -96.0MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB. [2023-11-26 10:47:43,035 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 138.4MB. Free memory is still 112.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:47:43,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.73ms. Allocated memory was 138.4MB in the beginning and 192.9MB in the end (delta: 54.5MB). Free memory was 75.2MB in the beginning and 163.4MB in the end (delta: -88.2MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2023-11-26 10:47:43,036 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.34ms. Allocated memory is still 192.9MB. Free memory was 163.4MB in the beginning and 162.5MB in the end (delta: 898.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:47:43,036 INFO L158 Benchmark]: Boogie Preprocessor took 33.97ms. Allocated memory is still 192.9MB. Free memory was 162.5MB in the beginning and 160.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:47:43,036 INFO L158 Benchmark]: RCFGBuilder took 333.79ms. Allocated memory is still 192.9MB. Free memory was 160.4MB in the beginning and 149.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 10:47:43,037 INFO L158 Benchmark]: BuchiAutomizer took 25198.46ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 149.9MB in the beginning and 171.5MB in the end (delta: -21.5MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. [2023-11-26 10:47:43,037 INFO L158 Benchmark]: Witness Printer took 4.62ms. Allocated memory is still 281.0MB. Free memory is still 171.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:47:43,040 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 138.4MB. Free memory is still 112.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.73ms. Allocated memory was 138.4MB in the beginning and 192.9MB in the end (delta: 54.5MB). Free memory was 75.2MB in the beginning and 163.4MB in the end (delta: -88.2MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.34ms. Allocated memory is still 192.9MB. Free memory was 163.4MB in the beginning and 162.5MB in the end (delta: 898.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.97ms. Allocated memory is still 192.9MB. Free memory was 162.5MB in the beginning and 160.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 333.79ms. Allocated memory is still 192.9MB. Free memory was 160.4MB in the beginning and 149.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 25198.46ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 149.9MB in the beginning and 171.5MB in the end (delta: -21.5MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. * Witness Printer took 4.62ms. Allocated memory is still 281.0MB. Free memory is still 171.5MB. 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 13 terminating modules (8 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function n and consists of 15 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 25.1s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 15.2s. Construction of modules took 1.8s. Büchi inclusion checks took 7.7s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 11. Automata minimization 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 180 StatesRemovedByMinimization, 11 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 [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 10/51 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 772 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 745 mSDsluCounter, 1307 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 973 mSDsCounter, 379 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2228 IncrementalHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 379 mSolverCounterUnsat, 334 mSDtfsCounter, 2228 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI4 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf90 smp81 dnf100 smp100 tf113 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 51ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 20 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-26 10:47:43,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:43,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:43,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-26 10:47:43,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:43,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-26 10:47:44,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-26 10:47:44,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-26 10:47:44,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-26 10:47:44,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 10:47:44,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1782417d-bce4-4734-9f59-087884a18c40/bin/uautomizer-verify-VRDe98Ueme/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