./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_7-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_7-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya --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 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:13:07,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:13:07,459 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-29 04:13:07,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:13:07,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:13:07,488 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:13:07,489 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:13:07,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:13:07,490 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:13:07,491 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:13:07,491 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:13:07,492 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:13:07,492 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:13:07,493 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 04:13:07,493 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 04:13:07,494 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 04:13:07,494 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 04:13:07,495 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 04:13:07,495 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 04:13:07,496 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:13:07,496 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 04:13:07,498 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:13:07,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:13:07,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:13:07,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:13:07,500 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 04:13:07,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 04:13:07,501 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 04:13:07,501 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:13:07,502 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:13:07,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:13:07,502 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 04:13:07,503 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:13:07,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:13:07,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:13:07,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:13:07,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:13:07,505 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 04:13:07,505 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_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 [2023-11-29 04:13:07,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:13:07,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:13:07,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:13:07,744 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:13:07,744 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:13:07,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/recursive-simple/fibo_7-2.c [2023-11-29 04:13:10,498 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:13:10,660 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:13:10,660 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/sv-benchmarks/c/recursive-simple/fibo_7-2.c [2023-11-29 04:13:10,667 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/data/74ddf61fa/547420c3a73f41029a9a8961a748e19c/FLAG69d944459 [2023-11-29 04:13:10,681 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/data/74ddf61fa/547420c3a73f41029a9a8961a748e19c [2023-11-29 04:13:10,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:13:10,685 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:13:10,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:13:10,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:13:10,692 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:13:10,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48589b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10, skipping insertion in model container [2023-11-29 04:13:10,694 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,714 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:13:10,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:13:10,879 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:13:10,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:13:10,908 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:13:10,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10 WrapperNode [2023-11-29 04:13:10,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:13:10,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:13:10,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:13:10,910 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:13:10,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,923 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,938 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-29 04:13:10,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:13:10,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:13:10,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:13:10,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:13:10,950 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,962 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]. [2023-11-29 04:13:10,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:13:10,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:13:10,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:13:10,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:13:10,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (1/1) ... [2023-11-29 04:13:10,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:10,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:11,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:11,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 04:13:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:13:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:13:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:13:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:13:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2023-11-29 04:13:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2023-11-29 04:13:11,099 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:13:11,102 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:13:11,185 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:13:11,193 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:13:11,193 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 04:13:11,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:13:11 BoogieIcfgContainer [2023-11-29 04:13:11,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:13:11,196 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 04:13:11,196 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 04:13:11,200 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 04:13:11,201 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 04:13:11,201 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 04:13:10" (1/3) ... [2023-11-29 04:13:11,202 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f5b8721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 04:13:11, skipping insertion in model container [2023-11-29 04:13:11,202 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 04:13:11,203 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:13:10" (2/3) ... [2023-11-29 04:13:11,203 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@f5b8721 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 04:13:11, skipping insertion in model container [2023-11-29 04:13:11,203 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 04:13:11,203 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:13:11" (3/3) ... [2023-11-29 04:13:11,205 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_7-2.c [2023-11-29 04:13:11,253 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 04:13:11,253 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 04:13:11,253 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 04:13:11,253 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 04:13:11,253 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 04:13:11,254 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 04:13:11,254 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 04:13:11,254 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 04:13:11,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:13:11,276 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 04:13:11,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 04:13:11,276 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 04:13:11,281 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 04:13:11,281 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 04:13:11,281 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 04:13:11,282 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 04:13:11,284 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 04:13:11,284 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 04:13:11,284 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 04:13:11,285 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 04:13:11,285 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 04:13:11,291 INFO L748 eck$LassoCheckResult]: Stem: 17#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 4#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 11#$Ultimate##0true [2023-11-29 04:13:11,291 INFO L750 eck$LassoCheckResult]: Loop: 11#$Ultimate##0true ~n := #in~n; 5#L8true assume !(~n < 1); 7#L10true assume !(1 == ~n); 13#L13true call #t~ret4 := fibo(~n - 1);< 11#$Ultimate##0true [2023-11-29 04:13:11,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash 29885, now seen corresponding path program 1 times [2023-11-29 04:13:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:11,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809352860] [2023-11-29 04:13:11,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:11,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:13:11,397 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:13:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:13:11,423 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:13:11,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:11,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1512524, now seen corresponding path program 1 times [2023-11-29 04:13:11,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:11,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199197054] [2023-11-29 04:13:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:11,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:13:11,434 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:13:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:13:11,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:13:11,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:11,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1830210312, now seen corresponding path program 1 times [2023-11-29 04:13:11,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:11,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323436860] [2023-11-29 04:13:11,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:11,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:13:11,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:13:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:13:11,467 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:13:11,578 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 04:13:11,579 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 04:13:11,579 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 04:13:11,579 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 04:13:11,580 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 04:13:11,580 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:11,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 04:13:11,580 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 04:13:11,580 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration1_Loop [2023-11-29 04:13:11,580 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 04:13:11,581 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 04:13:11,595 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:11,604 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:11,626 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:11,629 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:11,639 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:11,696 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 04:13:11,697 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 04:13:11,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:11,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:11,701 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:11,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-29 04:13:11,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 04:13:11,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 04:13:11,719 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 04:13:11,719 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 04:13:11,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:13:11,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:11,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:11,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:11,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-29 04:13:11,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 04:13:11,735 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 04:13:11,750 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 04:13:11,750 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 04:13:11,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-29 04:13:11,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:11,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:11,755 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:11,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-29 04:13:11,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 04:13:11,763 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 04:13:11,775 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 04:13:11,775 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 04:13:11,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-29 04:13:11,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:11,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:11,780 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:11,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-29 04:13:11,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 04:13:11,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 04:13:11,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-29 04:13:11,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:11,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:11,800 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:11,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-29 04:13:11,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 04:13:11,803 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 04:13:11,866 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 04:13:11,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-29 04:13:11,869 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 04:13:11,869 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 04:13:11,870 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 04:13:11,870 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 04:13:11,870 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 04:13:11,870 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:11,870 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 04:13:11,870 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 04:13:11,870 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration1_Loop [2023-11-29 04:13:11,870 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 04:13:11,870 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 04:13:11,872 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:11,875 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:11,878 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:11,880 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:11,888 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:11,935 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 04:13:11,940 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 04:13:11,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:11,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:11,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:11,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-29 04:13:11,947 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 [2023-11-29 04:13:11,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:13:11,960 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:13:11,961 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:13:11,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:13:11,961 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:13:11,963 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:13:11,963 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:13:11,965 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:13:11,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-29 04:13:11,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:11,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:11,971 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:11,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-29 04:13:11,973 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 [2023-11-29 04:13:11,984 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:13:11,984 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:13:11,984 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:13:11,984 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:13:11,984 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:13:11,985 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:13:11,985 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:13:11,987 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:13:11,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-29 04:13:11,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:11,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:11,991 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:11,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-29 04:13:11,994 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 [2023-11-29 04:13:12,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:13:12,007 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:13:12,007 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:13:12,007 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:13:12,007 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:13:12,008 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:13:12,008 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:13:12,010 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:13:12,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-29 04:13:12,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:12,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:12,014 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:12,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-29 04:13:12,017 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 [2023-11-29 04:13:12,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:13:12,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:13:12,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:13:12,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:13:12,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:13:12,028 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:13:12,028 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:13:12,031 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 04:13:12,034 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 04:13:12,034 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 04:13:12,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:12,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:12,058 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:12,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-29 04:13:12,060 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 04:13:12,060 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 04:13:12,060 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 04:13:12,061 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2023-11-29 04:13:12,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-29 04:13:12,067 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 04:13:12,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:12,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:13:12,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:12,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:13:12,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:12,199 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-29 04:13:12,200 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:12,293 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 49 states and 61 transitions. Complement of second has 12 states. [2023-11-29 04:13:12,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 04:13:12,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:13:12,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2023-11-29 04:13:12,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2023-11-29 04:13:12,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:13:12,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2023-11-29 04:13:12,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:13:12,302 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-29 04:13:12,302 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:13:12,303 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2023-11-29 04:13:12,307 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 04:13:12,313 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 25 states and 34 transitions. [2023-11-29 04:13:12,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-29 04:13:12,314 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-29 04:13:12,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2023-11-29 04:13:12,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 04:13:12,314 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-11-29 04:13:12,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2023-11-29 04:13:12,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2023-11-29 04:13:12,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 04:13:12,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-11-29 04:13:12,336 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-11-29 04:13:12,336 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-11-29 04:13:12,336 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 04:13:12,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2023-11-29 04:13:12,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 04:13:12,337 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 04:13:12,338 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 04:13:12,338 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:12,338 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:12,339 INFO L748 eck$LassoCheckResult]: Stem: 138#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 139#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 124#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 123#$Ultimate##0 ~n := #in~n; 125#L8 assume !(~n < 1); 137#L10 assume !(1 == ~n); 127#L13 call #t~ret4 := fibo(~n - 1);< 126#$Ultimate##0 ~n := #in~n; 128#L8 assume ~n < 1;#res := 0; 134#fiboFINAL assume true; 135#fiboEXIT >#35#return; 130#L13-1 [2023-11-29 04:13:12,339 INFO L750 eck$LassoCheckResult]: Loop: 130#L13-1 call #t~ret5 := fibo(~n - 2);< 131#$Ultimate##0 ~n := #in~n; 141#L8 assume !(~n < 1); 142#L10 assume !(1 == ~n); 129#L13 call #t~ret4 := fibo(~n - 1);< 131#$Ultimate##0 ~n := #in~n; 141#L8 assume ~n < 1;#res := 0; 133#fiboFINAL assume true; 140#fiboEXIT >#35#return; 130#L13-1 [2023-11-29 04:13:12,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:12,340 INFO L85 PathProgramCache]: Analyzing trace with hash 523436175, now seen corresponding path program 1 times [2023-11-29 04:13:12,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:12,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991323212] [2023-11-29 04:13:12,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:12,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:12,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 04:13:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:13:12,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:12,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991323212] [2023-11-29 04:13:12,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991323212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:12,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:12,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:13:12,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137145805] [2023-11-29 04:13:12,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:12,468 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 04:13:12,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:12,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1950983701, now seen corresponding path program 1 times [2023-11-29 04:13:12,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:12,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164259176] [2023-11-29 04:13:12,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:12,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 04:13:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:12,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 04:13:12,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:12,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164259176] [2023-11-29 04:13:12,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164259176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:13:12,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:13:12,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:13:12,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006356767] [2023-11-29 04:13:12,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:13:12,539 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 04:13:12,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:12,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:13:12,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:13:12,542 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:13:12,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:13:12,606 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2023-11-29 04:13:12,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2023-11-29 04:13:12,608 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 04:13:12,610 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2023-11-29 04:13:12,610 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-11-29 04:13:12,610 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-29 04:13:12,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2023-11-29 04:13:12,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 04:13:12,611 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-29 04:13:12,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2023-11-29 04:13:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-29 04:13:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 04:13:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-11-29 04:13:12,615 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-29 04:13:12,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:13:12,616 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-11-29 04:13:12,616 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-29 04:13:12,616 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2023-11-29 04:13:12,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-29 04:13:12,618 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 04:13:12,618 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 04:13:12,618 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:12,618 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:12,619 INFO L748 eck$LassoCheckResult]: Stem: 209#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 210#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 197#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 196#$Ultimate##0 ~n := #in~n; 198#L8 assume !(~n < 1); 212#L10 assume !(1 == ~n); 200#L13 call #t~ret4 := fibo(~n - 1);< 199#$Ultimate##0 ~n := #in~n; 201#L8 assume !(~n < 1); 211#L10 assume 1 == ~n;#res := 1; 213#fiboFINAL assume true; 216#fiboEXIT >#35#return; 203#L13-1 [2023-11-29 04:13:12,619 INFO L750 eck$LassoCheckResult]: Loop: 203#L13-1 call #t~ret5 := fibo(~n - 2);< 206#$Ultimate##0 ~n := #in~n; 219#L8 assume !(~n < 1); 217#L10 assume !(1 == ~n); 204#L13 call #t~ret4 := fibo(~n - 1);< 206#$Ultimate##0 ~n := #in~n; 219#L8 assume !(~n < 1); 217#L10 assume 1 == ~n;#res := 1; 218#fiboFINAL assume true; 214#fiboEXIT >#35#return; 203#L13-1 [2023-11-29 04:13:12,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:12,619 INFO L85 PathProgramCache]: Analyzing trace with hash -953322862, now seen corresponding path program 1 times [2023-11-29 04:13:12,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:12,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532817823] [2023-11-29 04:13:12,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:12,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 04:13:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:12,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:12,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532817823] [2023-11-29 04:13:12,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532817823] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:13:12,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268205641] [2023-11-29 04:13:12,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:12,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:12,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:12,706 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:13:12,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:13:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:12,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:13:12,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:12,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:13:12,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:12,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268205641] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:13:12,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:13:12,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-29 04:13:12,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603052369] [2023-11-29 04:13:12,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:13:12,871 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 04:13:12,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:12,871 INFO L85 PathProgramCache]: Analyzing trace with hash 350977484, now seen corresponding path program 1 times [2023-11-29 04:13:12,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:12,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779778180] [2023-11-29 04:13:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:12,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:13:12,877 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:13:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:13:12,882 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:13:13,010 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 04:13:13,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 04:13:13,010 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 04:13:13,010 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 04:13:13,010 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 04:13:13,010 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:13,011 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 04:13:13,011 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 04:13:13,011 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration3_Loop [2023-11-29 04:13:13,011 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 04:13:13,011 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 04:13:13,012 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:13,015 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:13,017 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:13,023 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:13,027 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:13,066 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 04:13:13,066 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 04:13:13,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:13,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:13,069 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:13,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-29 04:13:13,087 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 04:13:13,087 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 04:13:13,101 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 04:13:13,101 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#in~n=2} Honda state: {fibo_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 04:13:13,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-11-29 04:13:13,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:13,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:13,106 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:13,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-29 04:13:13,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 04:13:13,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 04:13:13,120 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 04:13:13,120 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 04:13:13,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-11-29 04:13:13,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:13,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:13,124 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:13,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-29 04:13:13,127 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 04:13:13,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 04:13:13,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-11-29 04:13:13,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:13,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:13,142 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:13,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-29 04:13:13,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 04:13:13,148 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 04:13:13,162 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 04:13:13,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-11-29 04:13:13,170 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 04:13:13,170 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 04:13:13,170 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 04:13:13,170 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 04:13:13,170 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 04:13:13,170 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:13,170 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 04:13:13,170 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 04:13:13,170 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration3_Loop [2023-11-29 04:13:13,171 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 04:13:13,171 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 04:13:13,172 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:13,175 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:13,178 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:13,180 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:13,186 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:13,227 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 04:13:13,227 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 04:13:13,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:13,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:13,228 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:13,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-29 04:13:13,234 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 [2023-11-29 04:13:13,246 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:13:13,247 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:13:13,247 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:13:13,247 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:13:13,247 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:13:13,248 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:13:13,248 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:13:13,250 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:13:13,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-11-29 04:13:13,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:13,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:13,255 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:13,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-29 04:13:13,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-11-29 04:13:13,278 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 [2023-11-29 04:13:13,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:13:13,289 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:13:13,289 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:13:13,289 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:13:13,289 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:13:13,290 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:13:13,290 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:13:13,292 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:13:13,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-11-29 04:13:13,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:13,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:13,296 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:13,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-29 04:13:13,299 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 [2023-11-29 04:13:13,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:13:13,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:13:13,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:13:13,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:13:13,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:13:13,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:13:13,310 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:13:13,312 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 04:13:13,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-29 04:13:13,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:13,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:13,315 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:13,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-29 04:13:13,317 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 [2023-11-29 04:13:13,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:13:13,327 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:13:13,327 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:13:13,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:13:13,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:13:13,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:13:13,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:13:13,331 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 04:13:13,333 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-29 04:13:13,333 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 04:13:13,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:13,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:13,334 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:13,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-29 04:13:13,336 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 04:13:13,336 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 04:13:13,336 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 04:13:13,336 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2023-11-29 04:13:13,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-29 04:13:13,340 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 04:13:13,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:13,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:13:13,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:13,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:13:13,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:13:13,544 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 [2023-11-29 04:13:13,544 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:13:13,732 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2023-11-29 04:13:13,733 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 [2023-11-29 04:13:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:13:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2023-11-29 04:13:13,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2023-11-29 04:13:13,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:13:13,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2023-11-29 04:13:13,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:13:13,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2023-11-29 04:13:13,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:13:13,736 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2023-11-29 04:13:13,744 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-29 04:13:13,750 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2023-11-29 04:13:13,750 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2023-11-29 04:13:13,750 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2023-11-29 04:13:13,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2023-11-29 04:13:13,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 04:13:13,751 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2023-11-29 04:13:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2023-11-29 04:13:13,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2023-11-29 04:13:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2023-11-29 04:13:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2023-11-29 04:13:13,766 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2023-11-29 04:13:13,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:13,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 04:13:13,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:13:13,767 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:13:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:13:13,874 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2023-11-29 04:13:13,874 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2023-11-29 04:13:13,879 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-29 04:13:13,883 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2023-11-29 04:13:13,883 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2023-11-29 04:13:13,883 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2023-11-29 04:13:13,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2023-11-29 04:13:13,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 04:13:13,884 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2023-11-29 04:13:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2023-11-29 04:13:13,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2023-11-29 04:13:13,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2023-11-29 04:13:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2023-11-29 04:13:13,898 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2023-11-29 04:13:13,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:13:13,899 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2023-11-29 04:13:13,899 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-29 04:13:13,899 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2023-11-29 04:13:13,902 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2023-11-29 04:13:13,902 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 04:13:13,902 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 04:13:13,904 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:13,904 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1] [2023-11-29 04:13:13,905 INFO L748 eck$LassoCheckResult]: Stem: 820#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 821#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 805#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 806#$Ultimate##0 ~n := #in~n; 824#L8 assume !(~n < 1); 825#L10 assume !(1 == ~n); 793#L13 call #t~ret4 := fibo(~n - 1);< 792#$Ultimate##0 ~n := #in~n; 794#L8 assume !(~n < 1); 831#L10 assume !(1 == ~n); 803#L13 call #t~ret4 := fibo(~n - 1);< 804#$Ultimate##0 ~n := #in~n; 853#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 846#L13 call #t~ret4 := fibo(~n - 1);< 804#$Ultimate##0 ~n := #in~n; 853#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 846#L13 call #t~ret4 := fibo(~n - 1);< 804#$Ultimate##0 ~n := #in~n; 854#L8 assume !(~n < 1); 852#L10 assume 1 == ~n;#res := 1; 850#fiboFINAL assume true; 849#fiboEXIT >#35#return; 796#L13-1 call #t~ret5 := fibo(~n - 2);< 848#$Ultimate##0 ~n := #in~n; 822#L8 assume ~n < 1;#res := 0; 823#fiboFINAL assume true; 890#fiboEXIT >#37#return; 889#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 887#fiboFINAL assume true; 879#fiboEXIT >#35#return; 829#L13-1 [2023-11-29 04:13:13,905 INFO L750 eck$LassoCheckResult]: Loop: 829#L13-1 call #t~ret5 := fibo(~n - 2);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume 1 == ~n;#res := 1; 830#fiboFINAL assume true; 876#fiboEXIT >#35#return; 829#L13-1 call #t~ret5 := fibo(~n - 2);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume !(1 == ~n); 827#L13 call #t~ret4 := fibo(~n - 1);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume !(~n < 1); 826#L10 assume 1 == ~n;#res := 1; 830#fiboFINAL assume true; 876#fiboEXIT >#35#return; 829#L13-1 call #t~ret5 := fibo(~n - 2);< 802#$Ultimate##0 ~n := #in~n; 884#L8 assume ~n < 1;#res := 0; 885#fiboFINAL assume true; 883#fiboEXIT >#37#return; 878#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 886#fiboFINAL assume true; 880#fiboEXIT >#37#return; 878#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 886#fiboFINAL assume true; 880#fiboEXIT >#35#return; 829#L13-1 [2023-11-29 04:13:13,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:13,905 INFO L85 PathProgramCache]: Analyzing trace with hash 870102534, now seen corresponding path program 1 times [2023-11-29 04:13:13,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:13,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117276730] [2023-11-29 04:13:13,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:13,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 04:13:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 04:13:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 04:13:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:13:14,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:14,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117276730] [2023-11-29 04:13:14,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117276730] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:13:14,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91181000] [2023-11-29 04:13:14,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:14,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:14,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:14,116 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:13:14,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 04:13:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,166 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:13:14,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:14,228 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 04:13:14,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:13:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 04:13:14,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91181000] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:13:14,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:13:14,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 18 [2023-11-29 04:13:14,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084902106] [2023-11-29 04:13:14,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:13:14,485 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 04:13:14,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:14,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2033249087, now seen corresponding path program 1 times [2023-11-29 04:13:14,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:14,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183598442] [2023-11-29 04:13:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:14,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-11-29 04:13:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-29 04:13:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 04:13:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 04:13:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 04:13:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 04:13:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,626 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 04:13:14,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:14,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183598442] [2023-11-29 04:13:14,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183598442] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:13:14,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412586560] [2023-11-29 04:13:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:14,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:14,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:14,629 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:13:14,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 04:13:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:14,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:13:14,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 04:13:14,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:13:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 04:13:14,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412586560] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:13:14,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:13:14,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-29 04:13:14,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116718243] [2023-11-29 04:13:14,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:13:14,880 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 04:13:14,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 04:13:14,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-11-29 04:13:14,881 INFO L87 Difference]: Start difference. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 19 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 11 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-29 04:13:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:13:15,163 INFO L93 Difference]: Finished difference Result 146 states and 193 transitions. [2023-11-29 04:13:15,163 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 146 states and 193 transitions. [2023-11-29 04:13:15,167 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2023-11-29 04:13:15,171 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 146 states to 139 states and 186 transitions. [2023-11-29 04:13:15,171 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2023-11-29 04:13:15,172 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2023-11-29 04:13:15,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 186 transitions. [2023-11-29 04:13:15,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 04:13:15,172 INFO L218 hiAutomatonCegarLoop]: Abstraction has 139 states and 186 transitions. [2023-11-29 04:13:15,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states and 186 transitions. [2023-11-29 04:13:15,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2023-11-29 04:13:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 92 states have internal predecessors, (101), 33 states have call successors, (34), 17 states have call predecessors, (34), 20 states have return successors, (51), 29 states have call predecessors, (51), 30 states have call successors, (51) [2023-11-29 04:13:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2023-11-29 04:13:15,185 INFO L240 hiAutomatonCegarLoop]: Abstraction has 139 states and 186 transitions. [2023-11-29 04:13:15,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 04:13:15,186 INFO L428 stractBuchiCegarLoop]: Abstraction has 139 states and 186 transitions. [2023-11-29 04:13:15,186 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-29 04:13:15,187 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 139 states and 186 transitions. [2023-11-29 04:13:15,189 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2023-11-29 04:13:15,189 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 04:13:15,189 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 04:13:15,191 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:13:15,191 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 04:13:15,191 INFO L748 eck$LassoCheckResult]: Stem: 1589#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 1590#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 1581#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 1582#$Ultimate##0 ~n := #in~n; 1587#L8 assume !(~n < 1); 1588#L10 assume !(1 == ~n); 1569#L13 call #t~ret4 := fibo(~n - 1);< 1568#$Ultimate##0 ~n := #in~n; 1570#L8 assume !(~n < 1); 1633#L10 assume !(1 == ~n); 1629#L13 call #t~ret4 := fibo(~n - 1);< 1632#$Ultimate##0 ~n := #in~n; 1631#L8 assume !(~n < 1); 1630#L10 assume !(1 == ~n); 1625#L13 call #t~ret4 := fibo(~n - 1);< 1628#$Ultimate##0 ~n := #in~n; 1627#L8 assume !(~n < 1); 1626#L10 assume !(1 == ~n); 1614#L13 call #t~ret4 := fibo(~n - 1);< 1619#$Ultimate##0 ~n := #in~n; 1623#L8 assume !(~n < 1); 1621#L10 assume !(1 == ~n); 1615#L13 call #t~ret4 := fibo(~n - 1);< 1619#$Ultimate##0 ~n := #in~n; 1623#L8 assume !(~n < 1); 1621#L10 assume !(1 == ~n); 1615#L13 call #t~ret4 := fibo(~n - 1);< 1619#$Ultimate##0 ~n := #in~n; 1624#L8 assume !(~n < 1); 1622#L10 assume 1 == ~n;#res := 1; 1620#fiboFINAL assume true; 1618#fiboEXIT >#35#return; 1594#L13-1 call #t~ret5 := fibo(~n - 2);< 1616#$Ultimate##0 ~n := #in~n; 1688#L8 assume ~n < 1;#res := 0; 1686#fiboFINAL assume true; 1685#fiboEXIT >#37#return; 1684#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1680#fiboFINAL assume true; 1672#fiboEXIT >#35#return; 1635#L13-1 [2023-11-29 04:13:15,191 INFO L750 eck$LassoCheckResult]: Loop: 1635#L13-1 call #t~ret5 := fibo(~n - 2);< 1580#$Ultimate##0 ~n := #in~n; 1640#L8 assume !(~n < 1); 1694#L10 assume !(1 == ~n); 1639#L13 call #t~ret4 := fibo(~n - 1);< 1580#$Ultimate##0 ~n := #in~n; 1640#L8 assume !(~n < 1); 1694#L10 assume !(1 == ~n); 1639#L13 call #t~ret4 := fibo(~n - 1);< 1580#$Ultimate##0 ~n := #in~n; 1640#L8 assume !(~n < 1); 1694#L10 assume 1 == ~n;#res := 1; 1693#fiboFINAL assume true; 1662#fiboEXIT >#35#return; 1664#L13-1 call #t~ret5 := fibo(~n - 2);< 1676#$Ultimate##0 ~n := #in~n; 1699#L8 assume ~n < 1;#res := 0; 1692#fiboFINAL assume true; 1681#fiboEXIT >#37#return; 1667#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1679#fiboFINAL assume true; 1670#fiboEXIT >#35#return; 1635#L13-1 [2023-11-29 04:13:15,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:15,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2090813104, now seen corresponding path program 2 times [2023-11-29 04:13:15,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:15,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55890149] [2023-11-29 04:13:15,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:15,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:13:15,204 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:13:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:13:15,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:13:15,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:15,216 INFO L85 PathProgramCache]: Analyzing trace with hash -2000232554, now seen corresponding path program 2 times [2023-11-29 04:13:15,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:15,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525566178] [2023-11-29 04:13:15,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:15,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:13:15,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 04:13:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 04:13:15,227 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 04:13:15,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:15,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2079680773, now seen corresponding path program 3 times [2023-11-29 04:13:15,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:13:15,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694666787] [2023-11-29 04:13:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:13:15,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:13:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:15,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 04:13:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:15,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 04:13:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 04:13:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:15,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 04:13:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 04:13:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:15,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 04:13:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 70 proven. 100 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-29 04:13:15,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:13:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694666787] [2023-11-29 04:13:15,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694666787] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:13:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955488584] [2023-11-29 04:13:15,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:13:15,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:13:15,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:15,465 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:13:15,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 04:13:15,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-11-29 04:13:15,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:13:15,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:13:15,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 87 proven. 47 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-29 04:13:15,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:13:16,052 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 87 proven. 49 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-29 04:13:16,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955488584] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:13:16,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 04:13:16,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 12] total 27 [2023-11-29 04:13:16,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564343871] [2023-11-29 04:13:16,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 04:13:16,313 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 04:13:16,313 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 04:13:16,313 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 04:13:16,313 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 04:13:16,313 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 04:13:16,313 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:16,313 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 04:13:16,313 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 04:13:16,313 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration5_Loop [2023-11-29 04:13:16,313 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 04:13:16,313 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 04:13:16,314 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:16,317 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:16,327 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:16,329 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:16,383 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 04:13:16,384 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 04:13:16,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:16,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:16,387 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:16,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-29 04:13:16,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 04:13:16,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 04:13:16,404 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 04:13:16,404 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 04:13:16,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2023-11-29 04:13:16,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:16,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:16,410 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:16,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-29 04:13:16,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 04:13:16,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 04:13:16,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-11-29 04:13:16,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:16,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:16,440 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:16,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-29 04:13:16,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 04:13:16,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 04:13:16,829 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 04:13:16,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2023-11-29 04:13:16,832 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 04:13:16,832 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 04:13:16,833 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 04:13:16,833 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 04:13:16,833 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 04:13:16,833 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:16,833 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 04:13:16,833 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 04:13:16,833 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration5_Loop [2023-11-29 04:13:16,833 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 04:13:16,833 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 04:13:16,834 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:16,841 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:16,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:16,845 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 04:13:16,887 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 04:13:16,887 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 04:13:16,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:16,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:16,888 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:16,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-29 04:13:16,890 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 [2023-11-29 04:13:16,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 04:13:16,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 04:13:16,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 04:13:16,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 04:13:16,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 04:13:16,902 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 04:13:16,902 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 04:13:16,905 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 04:13:16,908 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 04:13:16,908 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 04:13:16,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 04:13:16,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:13:16,910 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 04:13:16,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-29 04:13:16,911 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 04:13:16,912 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 04:13:16,912 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 04:13:16,912 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2023-11-29 04:13:16,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-29 04:13:16,915 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 04:13:16,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:16,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 04:13:16,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:17,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:13:17,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:13:17,327 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-29 04:13:17,328 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 139 states and 186 transitions. cyclomatic complexity: 53 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 04:13:17,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-29 04:13:17,584 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 139 states and 186 transitions. cyclomatic complexity: 53. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 272 states and 374 transitions. Complement of second has 45 states. [2023-11-29 04:13:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2023-11-29 04:13:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 04:13:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 41 transitions. [2023-11-29 04:13:17,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 41 transitions. Stem has 40 letters. Loop has 22 letters. [2023-11-29 04:13:17,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:13:17,587 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 04:13:17,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:17,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 04:13:17,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:17,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:13:17,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:13:17,976 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2023-11-29 04:13:17,976 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 139 states and 186 transitions. cyclomatic complexity: 53 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 04:13:18,131 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 139 states and 186 transitions. cyclomatic complexity: 53. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 333 states and 447 transitions. Complement of second has 25 states. [2023-11-29 04:13:18,132 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 [2023-11-29 04:13:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 04:13:18,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2023-11-29 04:13:18,133 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 40 letters. Loop has 22 letters. [2023-11-29 04:13:18,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:13:18,133 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 04:13:18,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:13:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:18,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 04:13:18,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:13:18,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:13:18,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:13:18,528 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 04:13:18,529 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 7 loop predicates [2023-11-29 04:13:18,529 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 139 states and 186 transitions. cyclomatic complexity: 53 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 04:13:18,812 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 139 states and 186 transitions. cyclomatic complexity: 53. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 1179 states and 1649 transitions. Complement of second has 138 states. [2023-11-29 04:13:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2023-11-29 04:13:18,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 04:13:18,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 46 transitions. [2023-11-29 04:13:18,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 40 letters. Loop has 22 letters. [2023-11-29 04:13:18,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:13:18,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 62 letters. Loop has 22 letters. [2023-11-29 04:13:18,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:13:18,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 40 letters. Loop has 44 letters. [2023-11-29 04:13:18,821 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 04:13:18,821 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1179 states and 1649 transitions. [2023-11-29 04:13:18,843 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 58 [2023-11-29 04:13:18,860 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1179 states to 679 states and 1031 transitions. [2023-11-29 04:13:18,861 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 271 [2023-11-29 04:13:18,862 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 302 [2023-11-29 04:13:18,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 679 states and 1031 transitions. [2023-11-29 04:13:18,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 04:13:18,862 INFO L218 hiAutomatonCegarLoop]: Abstraction has 679 states and 1031 transitions. [2023-11-29 04:13:18,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states and 1031 transitions. [2023-11-29 04:13:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 521. [2023-11-29 04:13:18,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 317 states have (on average 1.1892744479495267) internal successors, (377), 340 states have internal predecessors, (377), 121 states have call successors, (135), 62 states have call predecessors, (135), 83 states have return successors, (236), 118 states have call predecessors, (236), 115 states have call successors, (236) [2023-11-29 04:13:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 748 transitions. [2023-11-29 04:13:18,907 INFO L240 hiAutomatonCegarLoop]: Abstraction has 521 states and 748 transitions. [2023-11-29 04:13:18,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:13:18,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 04:13:18,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2023-11-29 04:13:18,908 INFO L87 Difference]: Start difference. First operand 521 states and 748 transitions. Second operand has 27 states, 25 states have (on average 2.4) internal successors, (60), 22 states have internal predecessors, (60), 15 states have call successors, (21), 8 states have call predecessors, (21), 6 states have return successors, (15), 9 states have call predecessors, (15), 10 states have call successors, (15) [2023-11-29 04:13:19,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:13:19,443 INFO L93 Difference]: Finished difference Result 319 states and 372 transitions. [2023-11-29 04:13:19,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 319 states and 372 transitions. [2023-11-29 04:13:19,447 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 04:13:19,447 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 319 states to 0 states and 0 transitions. [2023-11-29 04:13:19,447 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-29 04:13:19,447 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-29 04:13:19,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-29 04:13:19,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 04:13:19,447 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 04:13:19,447 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 04:13:19,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-29 04:13:19,448 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 04:13:19,448 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-29 04:13:19,448 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-29 04:13:19,449 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 04:13:19,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-29 04:13:19,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 04:13:19 BoogieIcfgContainer [2023-11-29 04:13:19,456 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 04:13:19,456 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:13:19,456 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:13:19,456 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:13:19,457 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:13:11" (3/4) ... [2023-11-29 04:13:19,458 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 04:13:19,459 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:13:19,459 INFO L158 Benchmark]: Toolchain (without parser) took 8774.08ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 142.0MB in the beginning and 111.2MB in the end (delta: 30.8MB). Peak memory consumption was 67.4MB. Max. memory is 16.1GB. [2023-11-29 04:13:19,459 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 65.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:13:19,460 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.85ms. Allocated memory is still 178.3MB. Free memory was 141.6MB in the beginning and 131.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 04:13:19,460 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.78ms. Allocated memory is still 178.3MB. Free memory was 131.9MB in the beginning and 130.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:13:19,461 INFO L158 Benchmark]: Boogie Preprocessor took 30.20ms. Allocated memory is still 178.3MB. Free memory was 130.6MB in the beginning and 129.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:13:19,461 INFO L158 Benchmark]: RCFGBuilder took 224.38ms. Allocated memory is still 178.3MB. Free memory was 129.0MB in the beginning and 119.8MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 04:13:19,461 INFO L158 Benchmark]: BuchiAutomizer took 8259.88ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 119.8MB in the beginning and 112.2MB in the end (delta: 7.6MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2023-11-29 04:13:19,462 INFO L158 Benchmark]: Witness Printer took 2.69ms. Allocated memory is still 213.9MB. Free memory was 112.2MB in the beginning and 111.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:13:19,464 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory is still 65.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.85ms. Allocated memory is still 178.3MB. Free memory was 141.6MB in the beginning and 131.9MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.78ms. Allocated memory is still 178.3MB. Free memory was 131.9MB in the beginning and 130.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.20ms. Allocated memory is still 178.3MB. Free memory was 130.6MB in the beginning and 129.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 224.38ms. Allocated memory is still 178.3MB. Free memory was 129.0MB in the beginning and 119.8MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 8259.88ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 119.8MB in the beginning and 112.2MB in the end (delta: 7.6MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * Witness Printer took 2.69ms. Allocated memory is still 213.9MB. Free memory was 112.2MB in the beginning and 111.2MB in the end (delta: 1.0MB). 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 7 terminating modules (4 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. 4 modules have a trivial ranking function, the largest among these consists of 27 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.2s and 6 iterations. TraceHistogramMax:8. Analysis of lassos took 4.4s. Construction of modules took 0.8s. Büchi inclusion checks took 2.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 189 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/26 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 448 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 432 mSDsluCounter, 437 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 299 mSDsCounter, 306 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1084 IncrementalHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 306 mSolverCounterUnsat, 138 mSDtfsCounter, 1084 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI2 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp81 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq180 hnf92 smp80 dnf100 smp100 tf111 neg100 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-29 04:13:19,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 04:13:19,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 04:13:19,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 04:13:20,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 04:13:20,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_752a606a-7325-4eb2-bf8a-0dcc5c526774/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE