./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/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_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/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_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/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 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:46:23,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:46:23,758 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-29 06:46:23,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:46:23,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:46:23,786 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:46:23,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:46:23,787 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:46:23,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:46:23,788 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:46:23,789 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:46:23,789 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:46:23,790 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:46:23,790 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 06:46:23,791 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 06:46:23,791 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 06:46:23,792 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 06:46:23,792 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 06:46:23,793 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 06:46:23,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:46:23,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 06:46:23,795 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:46:23,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:46:23,796 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:46:23,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:46:23,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 06:46:23,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 06:46:23,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 06:46:23,798 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 06:46:23,798 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:46:23,799 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:46:23,799 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 06:46:23,800 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:46:23,800 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:46:23,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:46:23,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:46:23,801 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:46:23,802 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 06:46:23,802 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_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2023-11-29 06:46:23,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:46:24,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:46:24,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:46:24,023 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:46:24,023 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:46:24,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2023-11-29 06:46:26,807 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:46:26,978 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:46:26,980 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2023-11-29 06:46:26,986 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/data/5884a4c37/7bf22c3bacbc41738ae921de4e62a2dc/FLAGf97688271 [2023-11-29 06:46:26,998 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/data/5884a4c37/7bf22c3bacbc41738ae921de4e62a2dc [2023-11-29 06:46:27,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:46:27,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:46:27,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:46:27,003 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:46:27,007 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:46:27,008 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:46:26" (1/1) ... [2023-11-29 06:46:27,009 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48ebd065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27, skipping insertion in model container [2023-11-29 06:46:27,009 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:46:26" (1/1) ... [2023-11-29 06:46:27,024 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:46:27,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:46:27,156 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:46:27,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:46:27,179 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:46:27,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27 WrapperNode [2023-11-29 06:46:27,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:46:27,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:46:27,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:46:27,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:46:27,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (1/1) ... [2023-11-29 06:46:27,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (1/1) ... [2023-11-29 06:46:27,205 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20 [2023-11-29 06:46:27,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:46:27,206 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:46:27,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:46:27,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:46:27,214 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (1/1) ... [2023-11-29 06:46:27,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (1/1) ... [2023-11-29 06:46:27,215 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (1/1) ... [2023-11-29 06:46:27,224 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 06:46:27,225 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (1/1) ... [2023-11-29 06:46:27,225 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (1/1) ... [2023-11-29 06:46:27,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (1/1) ... [2023-11-29 06:46:27,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (1/1) ... [2023-11-29 06:46:27,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (1/1) ... [2023-11-29 06:46:27,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (1/1) ... [2023-11-29 06:46:27,233 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:46:27,234 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:46:27,234 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:46:27,234 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:46:27,235 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (1/1) ... [2023-11-29 06:46:27,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:27,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:27,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:27,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 06:46:27,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:46:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:46:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-29 06:46:27,306 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-29 06:46:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-29 06:46:27,306 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-29 06:46:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:46:27,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:46:27,377 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:46:27,379 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:46:27,485 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:46:27,494 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:46:27,495 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 06:46:27,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:27 BoogieIcfgContainer [2023-11-29 06:46:27,496 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:46:27,497 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 06:46:27,498 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 06:46:27,501 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 06:46:27,502 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:46:27,502 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:46:26" (1/3) ... [2023-11-29 06:46:27,503 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30cf20f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:46:27, skipping insertion in model container [2023-11-29 06:46:27,504 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:46:27,504 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:46:27" (2/3) ... [2023-11-29 06:46:27,504 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@30cf20f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:46:27, skipping insertion in model container [2023-11-29 06:46:27,504 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 06:46:27,504 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:27" (3/3) ... [2023-11-29 06:46:27,506 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-1.c [2023-11-29 06:46:27,557 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 06:46:27,557 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 06:46:27,557 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 06:46:27,557 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 06:46:27,557 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 06:46:27,557 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 06:46:27,557 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 06:46:27,558 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 06:46:27,561 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 06:46:27,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 06:46:27,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:46:27,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:46:27,589 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 06:46:27,590 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:27,590 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 06:46:27,590 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 06:46:27,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 06:46:27,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:46:27,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:46:27,594 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 06:46:27,594 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:27,602 INFO L748 eck$LassoCheckResult]: Stem: 25#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 13#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 18#$Ultimate##0true [2023-11-29 06:46:27,602 INFO L750 eck$LassoCheckResult]: Loop: 18#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 15#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 14#L22true assume !(1 == ~n); 21#L25true call #t~ret6 := fibo1(~n - 1);< 18#$Ultimate##0true [2023-11-29 06:46:27,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:27,608 INFO L85 PathProgramCache]: Analyzing trace with hash 29898, now seen corresponding path program 1 times [2023-11-29 06:46:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:27,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785444857] [2023-11-29 06:46:27,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:27,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:27,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:46:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:27,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:46:27,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1206117480, now seen corresponding path program 1 times [2023-11-29 06:46:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:27,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931110939] [2023-11-29 06:46:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:27,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:27,746 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:46:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:27,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:46:27,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:27,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1276411855, now seen corresponding path program 1 times [2023-11-29 06:46:27,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:27,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167350469] [2023-11-29 06:46:27,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:27,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:27,771 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:46:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:27,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:46:28,008 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 06:46:28,009 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 06:46:28,009 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 06:46:28,009 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 06:46:28,009 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 06:46:28,009 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,009 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 06:46:28,010 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 06:46:28,010 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2023-11-29 06:46:28,010 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 06:46:28,010 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 06:46:28,026 INFO 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 06:46:28,042 INFO 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 06:46:28,044 INFO 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 06:46:28,047 INFO 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 06:46:28,050 INFO 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 06:46:28,052 INFO 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 06:46:28,063 INFO 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 06:46:28,066 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:28,140 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 06:46:28,140 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 06:46:28,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-29 06:46:28,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:28,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:28,173 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:28,173 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:28,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:28,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-29 06:46:28,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:28,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:28,203 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:28,204 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:28,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-29 06:46:28,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,210 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-29 06:46:28,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:28,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:28,225 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:28,225 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:28,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-29 06:46:28,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-29 06:46:28,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:28,236 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:28,264 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:28,264 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:28,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:28,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-29 06:46:28,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:28,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:28,286 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:28,286 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:28,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-29 06:46:28,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,291 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-29 06:46:28,296 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:28,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:28,311 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:28,311 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:28,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-29 06:46:28,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-29 06:46:28,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:28,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:28,333 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:28,333 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:28,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-29 06:46:28,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,339 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-29 06:46:28,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:28,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:28,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-29 06:46:28,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,361 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-29 06:46:28,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 06:46:28,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:28,445 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 06:46:28,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-11-29 06:46:28,448 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 06:46:28,448 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 06:46:28,448 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 06:46:28,449 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 06:46:28,449 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 06:46:28,449 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,449 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 06:46:28,449 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 06:46:28,449 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2023-11-29 06:46:28,449 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 06:46:28,449 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 06:46:28,451 INFO 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 06:46:28,453 INFO 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 06:46:28,456 INFO 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 06:46:28,458 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:28,461 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:28,464 INFO 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 06:46:28,474 INFO 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 06:46:28,477 INFO 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 06:46:28,538 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 06:46:28,542 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 06:46:28,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,545 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-29 06:46:28,548 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 06:46:28,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:28,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:28,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:28,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:28,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:28,561 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:28,561 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:28,564 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:28,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-11-29 06:46:28,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,568 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-29 06:46:28,570 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 06:46:28,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:28,580 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:28,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:28,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:28,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:28,581 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:28,581 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:28,583 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:28,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-11-29 06:46:28,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,587 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-29 06:46:28,589 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 06:46:28,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:28,599 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:28,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:28,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:28,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:28,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:28,600 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:28,602 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:28,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-11-29 06:46:28,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,606 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-29 06:46:28,608 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 06:46:28,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:28,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:28,618 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:28,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:28,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:28,619 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:28,619 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:28,621 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:28,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-11-29 06:46:28,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,626 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-29 06:46:28,628 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 06:46:28,640 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:28,641 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:28,641 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:28,641 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:28,641 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:28,641 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:28,642 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:28,643 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:28,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:28,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,648 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-29 06:46:28,653 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 06:46:28,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:28,665 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:28,666 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:28,666 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:28,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:28,667 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:28,667 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:28,673 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 06:46:28,677 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 06:46:28,677 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 06:46:28,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:28,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:28,704 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:28,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-29 06:46:28,706 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 06:46:28,707 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 06:46:28,707 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 06:46:28,707 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2023-11-29 06:46:28,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-11-29 06:46:28,713 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 06:46:28,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:28,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 06:46:28,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:28,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:46:28,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:28,861 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 06:46:28,892 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2023-11-29 06:46:28,893 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:29,060 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 85 states and 117 transitions. Complement of second has 24 states. [2023-11-29 06:46:29,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-29 06:46:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:46:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2023-11-29 06:46:29,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-29 06:46:29,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:29,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-29 06:46:29,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:29,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2023-11-29 06:46:29,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:29,071 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 85 states and 117 transitions. [2023-11-29 06:46:29,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 06:46:29,085 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 85 states to 61 states and 82 transitions. [2023-11-29 06:46:29,085 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-29 06:46:29,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2023-11-29 06:46:29,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2023-11-29 06:46:29,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 06:46:29,087 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2023-11-29 06:46:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2023-11-29 06:46:29,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-29 06:46:29,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-29 06:46:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2023-11-29 06:46:29,114 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-29 06:46:29,114 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2023-11-29 06:46:29,114 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 06:46:29,114 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2023-11-29 06:46:29,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 06:46:29,116 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:46:29,116 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:46:29,117 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:29,117 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:29,118 INFO L748 eck$LassoCheckResult]: Stem: 236#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 223#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 218#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 217#$Ultimate##0 ~n := #in~n; 219#L10 assume !(~n < 1); 229#L12 assume !(1 == ~n); 213#L15 call #t~ret4 := fibo2(~n - 1);< 233#$Ultimate##0 ~n := #in~n; 247#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 220#$Ultimate##0 ~n := #in~n; 222#L10 assume ~n < 1;#res := 0; 209#fibo1FINAL assume true; 210#fibo1EXIT >#48#return; 211#L25-1 [2023-11-29 06:46:29,118 INFO L750 eck$LassoCheckResult]: Loop: 211#L25-1 call #t~ret7 := fibo1(~n - 2);< 216#$Ultimate##0 ~n := #in~n; 242#L10 assume !(~n < 1); 243#L12 assume !(1 == ~n); 212#L15 call #t~ret4 := fibo2(~n - 1);< 225#$Ultimate##0 ~n := #in~n; 245#L20 assume !(~n < 1); 246#L22 assume !(1 == ~n); 224#L25 call #t~ret6 := fibo1(~n - 1);< 216#$Ultimate##0 ~n := #in~n; 242#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#48#return; 211#L25-1 [2023-11-29 06:46:29,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:29,118 INFO L85 PathProgramCache]: Analyzing trace with hash -722660232, now seen corresponding path program 1 times [2023-11-29 06:46:29,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:29,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433107845] [2023-11-29 06:46:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:29,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:29,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:46:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:29,242 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 06:46:29,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:29,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433107845] [2023-11-29 06:46:29,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433107845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:29,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:29,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:46:29,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911094561] [2023-11-29 06:46:29,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:29,246 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 06:46:29,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:29,246 INFO L85 PathProgramCache]: Analyzing trace with hash -880179458, now seen corresponding path program 1 times [2023-11-29 06:46:29,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:29,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481533552] [2023-11-29 06:46:29,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:29,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:29,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:46:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:29,313 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 06:46:29,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:29,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481533552] [2023-11-29 06:46:29,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481533552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:29,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:29,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:46:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293027747] [2023-11-29 06:46:29,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:29,315 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 06:46:29,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:29,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:46:29,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:46:29,317 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 06:46:29,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-11-29 06:46:29,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:29,391 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2023-11-29 06:46:29,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2023-11-29 06:46:29,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 06:46:29,397 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2023-11-29 06:46:29,397 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2023-11-29 06:46:29,397 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2023-11-29 06:46:29,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2023-11-29 06:46:29,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 06:46:29,398 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2023-11-29 06:46:29,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2023-11-29 06:46:29,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-11-29 06:46:29,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2023-11-29 06:46:29,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-11-29 06:46:29,405 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-29 06:46:29,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:46:29,407 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-11-29 06:46:29,407 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-29 06:46:29,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2023-11-29 06:46:29,409 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 06:46:29,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:46:29,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:46:29,410 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:29,410 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:29,410 INFO L748 eck$LassoCheckResult]: Stem: 381#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 364#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 365#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 366#$Ultimate##0 ~n := #in~n; 367#L10 assume !(~n < 1); 395#L12 assume !(1 == ~n); 359#L15 call #t~ret4 := fibo2(~n - 1);< 379#$Ultimate##0 ~n := #in~n; 396#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 368#$Ultimate##0 ~n := #in~n; 370#L10 assume !(~n < 1); 373#L12 assume 1 == ~n;#res := 1; 374#fibo1FINAL assume true; 386#fibo1EXIT >#48#return; 355#L25-1 [2023-11-29 06:46:29,410 INFO L750 eck$LassoCheckResult]: Loop: 355#L25-1 call #t~ret7 := fibo1(~n - 2);< 362#$Ultimate##0 ~n := #in~n; 388#L10 assume !(~n < 1); 387#L12 assume !(1 == ~n); 361#L15 call #t~ret4 := fibo2(~n - 1);< 392#$Ultimate##0 ~n := #in~n; 391#L20 assume !(~n < 1); 389#L22 assume !(1 == ~n); 356#L25 call #t~ret6 := fibo1(~n - 1);< 362#$Ultimate##0 ~n := #in~n; 388#L10 assume !(~n < 1); 387#L12 assume 1 == ~n;#res := 1; 384#fibo1FINAL assume true; 385#fibo1EXIT >#48#return; 355#L25-1 [2023-11-29 06:46:29,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:29,411 INFO L85 PathProgramCache]: Analyzing trace with hash -927605802, now seen corresponding path program 1 times [2023-11-29 06:46:29,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:29,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734471743] [2023-11-29 06:46:29,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:29,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:46:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:29,522 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 06:46:29,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:29,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734471743] [2023-11-29 06:46:29,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734471743] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:46:29,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133562692] [2023-11-29 06:46:29,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:29,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:29,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:29,527 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:29,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 06:46:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:29,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:46:29,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:29,609 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 06:46:29,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:29,738 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 06:46:29,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133562692] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:29,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:46:29,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-29 06:46:29,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068914117] [2023-11-29 06:46:29,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:29,740 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 06:46:29,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1515734512, now seen corresponding path program 1 times [2023-11-29 06:46:29,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:29,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535235469] [2023-11-29 06:46:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:29,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:29,746 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:46:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:29,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:46:29,944 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 06:46:29,944 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 06:46:29,944 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 06:46:29,944 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 06:46:29,944 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 06:46:29,944 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:29,944 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 06:46:29,944 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 06:46:29,944 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2023-11-29 06:46:29,944 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 06:46:29,944 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 06:46:29,945 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:29,948 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:29,950 INFO 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 06:46:29,952 INFO 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 06:46:29,955 INFO 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 06:46:29,958 INFO 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 06:46:29,963 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:29,965 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:29,967 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:30,022 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 06:46:30,022 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 06:46:30,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,023 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-29 06:46:30,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:30,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:30,042 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:30,042 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=2} Honda state: {fibo2_#in~n=2} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:30,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-29 06:46:30,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,047 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-29 06:46:30,058 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:30,058 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:30,072 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:30,072 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:30,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-29 06:46:30,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,077 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-29 06:46:30,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:30,080 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:30,094 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:30,095 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:30,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-11-29 06:46:30,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,103 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-29 06:46:30,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:30,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:30,122 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:30,122 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:30,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2023-11-29 06:46:30,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,127 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-29 06:46:30,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:30,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:30,144 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:30,144 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:30,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:30,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,149 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-29 06:46:30,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:30,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:30,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-29 06:46:30,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,169 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-29 06:46:30,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 06:46:30,171 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:30,186 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 06:46:30,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2023-11-29 06:46:30,189 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 06:46:30,189 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 06:46:30,189 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 06:46:30,189 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 06:46:30,189 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 06:46:30,190 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,190 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 06:46:30,190 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 06:46:30,190 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2023-11-29 06:46:30,190 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 06:46:30,190 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 06:46:30,191 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:30,194 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:30,196 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:30,198 INFO 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 06:46:30,200 INFO 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 06:46:30,204 INFO 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 06:46:30,206 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:30,208 INFO 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 06:46:30,210 INFO 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 06:46:30,253 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 06:46:30,254 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 06:46:30,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,255 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-29 06:46:30,258 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 06:46:30,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:30,268 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:30,269 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:30,269 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:30,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:30,270 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:30,270 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:30,272 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:30,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-11-29 06:46:30,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,276 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-29 06:46:30,278 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 06:46:30,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:30,291 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:30,291 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:30,291 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:30,291 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:30,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:30,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:30,293 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:30,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2023-11-29 06:46:30,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,296 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-29 06:46:30,299 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 06:46:30,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:30,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:30,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:30,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:30,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:30,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:30,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:30,311 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:30,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-11-29 06:46:30,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,315 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-29 06:46:30,317 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 06:46:30,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:30,327 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:30,327 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:30,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:30,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:30,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:30,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:30,329 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:30,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-29 06:46:30,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,333 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-29 06:46:30,335 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 06:46:30,345 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:30,345 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:30,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:30,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:30,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:30,346 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:30,346 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:30,349 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 06:46:30,351 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 06:46:30,351 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 06:46:30,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:30,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:30,353 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:30,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-29 06:46:30,354 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 06:46:30,354 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 06:46:30,354 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 06:46:30,355 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-29 06:46:30,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:30,358 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 06:46:30,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:30,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:46:30,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:30,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:46:30,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:30,615 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 06:46:30,616 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2023-11-29 06:46:30,616 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 06:46:30,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-11-29 06:46:31,059 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2023-11-29 06:46:31,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2023-11-29 06:46:31,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 06:46:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2023-11-29 06:46:31,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2023-11-29 06:46:31,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:31,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2023-11-29 06:46:31,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:31,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2023-11-29 06:46:31,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:31,065 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2023-11-29 06:46:31,073 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 06:46:31,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2023-11-29 06:46:31,080 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2023-11-29 06:46:31,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2023-11-29 06:46:31,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2023-11-29 06:46:31,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 06:46:31,083 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2023-11-29 06:46:31,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2023-11-29 06:46:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2023-11-29 06:46:31,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2023-11-29 06:46:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2023-11-29 06:46:31,102 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2023-11-29 06:46:31,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:31,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:46:31,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:46:31,103 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 06:46:31,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:31,311 INFO L93 Difference]: Finished difference Result 191 states and 254 transitions. [2023-11-29 06:46:31,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 254 transitions. [2023-11-29 06:46:31,316 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 06:46:31,321 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 246 transitions. [2023-11-29 06:46:31,321 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2023-11-29 06:46:31,321 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2023-11-29 06:46:31,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 246 transitions. [2023-11-29 06:46:31,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 06:46:31,322 INFO L218 hiAutomatonCegarLoop]: Abstraction has 185 states and 246 transitions. [2023-11-29 06:46:31,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 246 transitions. [2023-11-29 06:46:31,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2023-11-29 06:46:31,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 116 states have internal predecessors, (133), 40 states have call successors, (42), 21 states have call predecessors, (42), 26 states have return successors, (56), 34 states have call predecessors, (56), 37 states have call successors, (56) [2023-11-29 06:46:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2023-11-29 06:46:31,338 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 231 transitions. [2023-11-29 06:46:31,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:46:31,340 INFO L428 stractBuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2023-11-29 06:46:31,340 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-29 06:46:31,340 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 231 transitions. [2023-11-29 06:46:31,342 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 06:46:31,342 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:46:31,343 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:46:31,346 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 06:46:31,346 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:31,347 INFO L748 eck$LassoCheckResult]: Stem: 1278#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1252#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 1253#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1281#$Ultimate##0 ~n := #in~n; 1275#L10 assume !(~n < 1); 1270#L12 assume !(1 == ~n); 1221#L15 call #t~ret4 := fibo2(~n - 1);< 1229#$Ultimate##0 ~n := #in~n; 1230#L20 assume !(~n < 1); 1220#L22 assume !(1 == ~n); 1222#L25 call #t~ret6 := fibo1(~n - 1);< 1254#$Ultimate##0 ~n := #in~n; 1311#L10 assume !(~n < 1); 1308#L12 assume !(1 == ~n); 1304#L15 call #t~ret4 := fibo2(~n - 1);< 1305#$Ultimate##0 ~n := #in~n; 1309#L20 assume !(~n < 1); 1310#L22 assume !(1 == ~n); 1257#L25 call #t~ret6 := fibo1(~n - 1);< 1254#$Ultimate##0 ~n := #in~n; 1311#L10 assume !(~n < 1); 1308#L12 assume !(1 == ~n); 1304#L15 call #t~ret4 := fibo2(~n - 1);< 1305#$Ultimate##0 ~n := #in~n; 1309#L20 assume ~n < 1;#res := 0; 1307#fibo2FINAL assume true; 1303#fibo2EXIT >#52#return; 1256#L15-1 call #t~ret5 := fibo2(~n - 2);< 1258#$Ultimate##0 ~n := #in~n; 1378#L20 assume !(~n < 1); 1377#L22 assume !(1 == ~n); 1257#L25 call #t~ret6 := fibo1(~n - 1);< 1254#$Ultimate##0 ~n := #in~n; 1313#L10 assume !(~n < 1); 1318#L12 assume 1 == ~n;#res := 1; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1301#L25-1 call #t~ret7 := fibo1(~n - 2);< 1243#$Ultimate##0 ~n := #in~n; 1306#L10 assume !(~n < 1); 1302#L12 assume !(1 == ~n); 1241#L15 call #t~ret4 := fibo2(~n - 1);< 1299#$Ultimate##0 ~n := #in~n; 1298#L20 assume ~n < 1;#res := 0; 1272#fibo2FINAL assume true; 1273#fibo2EXIT >#52#return; 1242#L15-1 call #t~ret5 := fibo2(~n - 2);< 1299#$Ultimate##0 ~n := #in~n; 1298#L20 assume !(~n < 1); 1292#L22 assume 1 == ~n;#res := 1; 1293#fibo2FINAL assume true; 1364#fibo2EXIT >#54#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1383#fibo1FINAL assume true; 1382#fibo1EXIT >#50#return; 1248#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1371#fibo2FINAL assume true; 1368#fibo2EXIT >#54#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1383#fibo1FINAL assume true; 1382#fibo1EXIT >#48#return; 1247#L25-1 call #t~ret7 := fibo1(~n - 2);< 1239#$Ultimate##0 ~n := #in~n; 1249#L10 assume !(~n < 1); 1267#L12 assume !(1 == ~n); 1269#L15 call #t~ret4 := fibo2(~n - 1);< 1276#$Ultimate##0 ~n := #in~n; 1373#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1366#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#$Ultimate##0 ~n := #in~n; 1373#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#54#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1383#fibo1FINAL assume true; 1382#fibo1EXIT >#50#return; 1248#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1371#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1366#L15-1 [2023-11-29 06:46:31,347 INFO L750 eck$LassoCheckResult]: Loop: 1366#L15-1 call #t~ret5 := fibo2(~n - 2);< 1276#$Ultimate##0 ~n := #in~n; 1373#L20 assume !(~n < 1); 1374#L22 assume !(1 == ~n); 1246#L25 call #t~ret6 := fibo1(~n - 1);< 1239#$Ultimate##0 ~n := #in~n; 1249#L10 assume !(~n < 1); 1267#L12 assume !(1 == ~n); 1269#L15 call #t~ret4 := fibo2(~n - 1);< 1276#$Ultimate##0 ~n := #in~n; 1373#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1366#L15-1 [2023-11-29 06:46:31,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:31,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1380034771, now seen corresponding path program 1 times [2023-11-29 06:46:31,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:31,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614482499] [2023-11-29 06:46:31,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:31,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:46:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:46:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:46:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-29 06:46:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:46:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 23 proven. 71 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 06:46:31,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:31,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614482499] [2023-11-29 06:46:31,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614482499] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:46:31,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885501055] [2023-11-29 06:46:31,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:31,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:31,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:31,784 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:31,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 06:46:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:31,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:46:31,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:32,000 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-29 06:46:32,000 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-29 06:46:32,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885501055] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:32,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:46:32,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 30 [2023-11-29 06:46:32,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462671003] [2023-11-29 06:46:32,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:32,534 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 06:46:32,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:32,534 INFO L85 PathProgramCache]: Analyzing trace with hash -441960109, now seen corresponding path program 1 times [2023-11-29 06:46:32,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:32,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308903059] [2023-11-29 06:46:32,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:32,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:46:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:32,575 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 06:46:32,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:32,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308903059] [2023-11-29 06:46:32,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308903059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:46:32,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:46:32,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 06:46:32,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905609278] [2023-11-29 06:46:32,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:46:32,577 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 06:46:32,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:32,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:46:32,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:46:32,578 INFO L87 Difference]: Start difference. First operand 172 states and 231 transitions. cyclomatic complexity: 64 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 06:46:32,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:32,621 INFO L93 Difference]: Finished difference Result 189 states and 242 transitions. [2023-11-29 06:46:32,622 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 242 transitions. [2023-11-29 06:46:32,625 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 06:46:32,629 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 177 states and 228 transitions. [2023-11-29 06:46:32,629 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 115 [2023-11-29 06:46:32,629 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2023-11-29 06:46:32,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 177 states and 228 transitions. [2023-11-29 06:46:32,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 06:46:32,630 INFO L218 hiAutomatonCegarLoop]: Abstraction has 177 states and 228 transitions. [2023-11-29 06:46:32,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states and 228 transitions. [2023-11-29 06:46:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 163. [2023-11-29 06:46:32,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 113 states have internal predecessors, (124), 35 states have call successors, (36), 20 states have call predecessors, (36), 26 states have return successors, (52), 29 states have call predecessors, (52), 32 states have call successors, (52) [2023-11-29 06:46:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 212 transitions. [2023-11-29 06:46:32,642 INFO L240 hiAutomatonCegarLoop]: Abstraction has 163 states and 212 transitions. [2023-11-29 06:46:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:46:32,643 INFO L428 stractBuchiCegarLoop]: Abstraction has 163 states and 212 transitions. [2023-11-29 06:46:32,643 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-29 06:46:32,643 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 163 states and 212 transitions. [2023-11-29 06:46:32,645 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2023-11-29 06:46:32,645 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:46:32,645 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:46:32,649 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 06:46:32,649 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2023-11-29 06:46:32,649 INFO L748 eck$LassoCheckResult]: Stem: 2359#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2325#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2326#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2361#$Ultimate##0 ~n := #in~n; 2355#L10 assume !(~n < 1); 2350#L12 assume !(1 == ~n); 2307#L15 call #t~ret4 := fibo2(~n - 1);< 2311#$Ultimate##0 ~n := #in~n; 2312#L20 assume !(~n < 1); 2306#L22 assume !(1 == ~n); 2308#L25 call #t~ret6 := fibo1(~n - 1);< 2330#$Ultimate##0 ~n := #in~n; 2333#L10 assume !(~n < 1); 2391#L12 assume !(1 == ~n); 2334#L15 call #t~ret4 := fibo2(~n - 1);< 2387#$Ultimate##0 ~n := #in~n; 2393#L20 assume !(~n < 1); 2392#L22 assume !(1 == ~n); 2331#L25 call #t~ret6 := fibo1(~n - 1);< 2330#$Ultimate##0 ~n := #in~n; 2333#L10 assume !(~n < 1); 2391#L12 assume !(1 == ~n); 2334#L15 call #t~ret4 := fibo2(~n - 1);< 2387#$Ultimate##0 ~n := #in~n; 2393#L20 assume !(~n < 1); 2392#L22 assume 1 == ~n;#res := 1; 2389#fibo2FINAL assume true; 2360#fibo2EXIT >#52#return; 2335#L15-1 call #t~ret5 := fibo2(~n - 2);< 2338#$Ultimate##0 ~n := #in~n; 2357#L20 assume !(~n < 1); 2358#L22 assume !(1 == ~n); 2331#L25 call #t~ret6 := fibo1(~n - 1);< 2330#$Ultimate##0 ~n := #in~n; 2332#L10 assume !(~n < 1); 2396#L12 assume 1 == ~n;#res := 1; 2395#fibo1FINAL assume true; 2394#fibo1EXIT >#48#return; 2348#L25-1 call #t~ret7 := fibo1(~n - 2);< 2322#$Ultimate##0 ~n := #in~n; 2388#L10 assume !(~n < 1); 2380#L12 assume !(1 == ~n); 2321#L15 call #t~ret4 := fibo2(~n - 1);< 2377#$Ultimate##0 ~n := #in~n; 2375#L20 assume !(~n < 1); 2371#L22 assume 1 == ~n;#res := 1; 2372#fibo2FINAL assume true; 2430#fibo2EXIT >#52#return; 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume ~n < 1;#res := 0; 2443#fibo2FINAL assume true; 2451#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#50#return; 2434#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2428#fibo2FINAL assume true; 2419#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#48#return; 2423#L25-1 call #t~ret7 := fibo1(~n - 2);< 2439#$Ultimate##0 ~n := #in~n; 2447#L10 assume !(~n < 1); 2435#L12 assume !(1 == ~n); 2420#L15 call #t~ret4 := fibo2(~n - 1);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume 1 == ~n;#res := 1; 2440#fibo2FINAL assume true; 2429#fibo2EXIT >#52#return; 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume ~n < 1;#res := 0; 2443#fibo2FINAL assume true; 2451#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#50#return; 2434#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2428#fibo2FINAL assume true; 2419#fibo2EXIT >#52#return; 2416#L15-1 [2023-11-29 06:46:32,650 INFO L750 eck$LassoCheckResult]: Loop: 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume !(1 == ~n); 2425#L25 call #t~ret6 := fibo1(~n - 1);< 2439#$Ultimate##0 ~n := #in~n; 2447#L10 assume !(~n < 1); 2435#L12 assume !(1 == ~n); 2420#L15 call #t~ret4 := fibo2(~n - 1);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume !(1 == ~n); 2425#L25 call #t~ret6 := fibo1(~n - 1);< 2439#$Ultimate##0 ~n := #in~n; 2447#L10 assume !(~n < 1); 2435#L12 assume !(1 == ~n); 2420#L15 call #t~ret4 := fibo2(~n - 1);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume 1 == ~n;#res := 1; 2440#fibo2FINAL assume true; 2429#fibo2EXIT >#52#return; 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume ~n < 1;#res := 0; 2443#fibo2FINAL assume true; 2451#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#48#return; 2423#L25-1 call #t~ret7 := fibo1(~n - 2);< 2439#$Ultimate##0 ~n := #in~n; 2447#L10 assume !(~n < 1); 2435#L12 assume !(1 == ~n); 2420#L15 call #t~ret4 := fibo2(~n - 1);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume !(~n < 1); 2441#L22 assume 1 == ~n;#res := 1; 2440#fibo2FINAL assume true; 2429#fibo2EXIT >#52#return; 2416#L15-1 call #t~ret5 := fibo2(~n - 2);< 2426#$Ultimate##0 ~n := #in~n; 2442#L20 assume ~n < 1;#res := 0; 2443#fibo2FINAL assume true; 2451#fibo2EXIT >#54#return; 2415#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2449#fibo1FINAL assume true; 2438#fibo1EXIT >#50#return; 2434#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2428#fibo2FINAL assume true; 2419#fibo2EXIT >#52#return; 2416#L15-1 [2023-11-29 06:46:32,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:32,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1159629665, now seen corresponding path program 2 times [2023-11-29 06:46:32,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:32,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482701953] [2023-11-29 06:46:32,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:32,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:32,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:46:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:32,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:32,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:32,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 06:46:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 23 proven. 75 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-29 06:46:33,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:33,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482701953] [2023-11-29 06:46:33,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482701953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:46:33,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568479711] [2023-11-29 06:46:33,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:46:33,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:33,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:33,028 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:33,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 06:46:33,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:46:33,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:46:33,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:46:33,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 23 proven. 92 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-29 06:46:33,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 23 proven. 93 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-29 06:46:33,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568479711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:33,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:46:33,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 21 [2023-11-29 06:46:33,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94792693] [2023-11-29 06:46:33,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:33,665 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 06:46:33,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:33,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1108085027, now seen corresponding path program 1 times [2023-11-29 06:46:33,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:33,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237841944] [2023-11-29 06:46:33,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:33,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:46:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:46:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,856 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-29 06:46:33,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:33,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237841944] [2023-11-29 06:46:33,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237841944] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:46:33,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009603744] [2023-11-29 06:46:33,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:33,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:33,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:33,860 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:33,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 06:46:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:33,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 06:46:33,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 06:46:33,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 06:46:34,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009603744] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:34,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:46:34,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-29 06:46:34,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012482710] [2023-11-29 06:46:34,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:34,368 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 06:46:34,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:34,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:46:34,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:46:34,369 INFO L87 Difference]: Start difference. First operand 163 states and 212 transitions. cyclomatic complexity: 54 Second operand has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 18 states have internal predecessors, (48), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-29 06:46:34,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:34,623 INFO L93 Difference]: Finished difference Result 121 states and 150 transitions. [2023-11-29 06:46:34,623 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 150 transitions. [2023-11-29 06:46:34,626 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-29 06:46:34,628 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 97 states and 120 transitions. [2023-11-29 06:46:34,628 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2023-11-29 06:46:34,628 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 82 [2023-11-29 06:46:34,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 120 transitions. [2023-11-29 06:46:34,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 06:46:34,628 INFO L218 hiAutomatonCegarLoop]: Abstraction has 97 states and 120 transitions. [2023-11-29 06:46:34,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 120 transitions. [2023-11-29 06:46:34,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2023-11-29 06:46:34,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 63 states have internal predecessors, (69), 18 states have call successors, (18), 13 states have call predecessors, (18), 14 states have return successors, (29), 16 states have call predecessors, (29), 15 states have call successors, (29) [2023-11-29 06:46:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2023-11-29 06:46:34,635 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 116 transitions. [2023-11-29 06:46:34,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:46:34,636 INFO L428 stractBuchiCegarLoop]: Abstraction has 93 states and 116 transitions. [2023-11-29 06:46:34,636 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-29 06:46:34,637 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states and 116 transitions. [2023-11-29 06:46:34,638 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-29 06:46:34,638 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:46:34,638 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:46:34,639 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:34,639 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:34,639 INFO L748 eck$LassoCheckResult]: Stem: 3778#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 3751#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 3752#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 3781#$Ultimate##0 ~n := #in~n; 3783#L10 assume !(~n < 1); 3772#L12 assume !(1 == ~n); 3760#L15 call #t~ret4 := fibo2(~n - 1);< 3799#$Ultimate##0 ~n := #in~n; 3798#L20 assume !(~n < 1); 3797#L22 assume !(1 == ~n); 3745#L25 call #t~ret6 := fibo1(~n - 1);< 3754#$Ultimate##0 ~n := #in~n; 3756#L10 assume !(~n < 1); 3775#L12 assume !(1 == ~n); 3737#L15 call #t~ret4 := fibo2(~n - 1);< 3742#$Ultimate##0 ~n := #in~n; 3743#L20 assume !(~n < 1); 3736#L22 assume !(1 == ~n); 3738#L25 call #t~ret6 := fibo1(~n - 1);< 3754#$Ultimate##0 ~n := #in~n; 3755#L10 assume !(~n < 1); 3784#L12 assume 1 == ~n;#res := 1; 3744#fibo1FINAL assume true; 3746#fibo1EXIT >#48#return; 3747#L25-1 call #t~ret7 := fibo1(~n - 2);< 3748#$Ultimate##0 ~n := #in~n; 3753#L10 assume ~n < 1;#res := 0; 3771#fibo1FINAL assume true; 3749#fibo1EXIT >#50#return; 3750#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3823#fibo2FINAL assume true; 3814#fibo2EXIT >#52#return; 3768#L15-1 [2023-11-29 06:46:34,639 INFO L750 eck$LassoCheckResult]: Loop: 3768#L15-1 call #t~ret5 := fibo2(~n - 2);< 3811#$Ultimate##0 ~n := #in~n; 3825#L20 assume !(~n < 1); 3785#L22 assume !(1 == ~n); 3765#L25 call #t~ret6 := fibo1(~n - 1);< 3759#$Ultimate##0 ~n := #in~n; 3786#L10 assume !(~n < 1); 3788#L12 assume !(1 == ~n); 3740#L15 call #t~ret4 := fibo2(~n - 1);< 3739#$Ultimate##0 ~n := #in~n; 3741#L20 assume !(~n < 1); 3785#L22 assume !(1 == ~n); 3765#L25 call #t~ret6 := fibo1(~n - 1);< 3759#$Ultimate##0 ~n := #in~n; 3786#L10 assume !(~n < 1); 3788#L12 assume 1 == ~n;#res := 1; 3791#fibo1FINAL assume true; 3792#fibo1EXIT >#48#return; 3793#L25-1 call #t~ret7 := fibo1(~n - 2);< 3812#$Ultimate##0 ~n := #in~n; 3819#L10 assume ~n < 1;#res := 0; 3787#fibo1FINAL assume true; 3824#fibo1EXIT >#50#return; 3794#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3822#fibo2FINAL assume true; 3813#fibo2EXIT >#52#return; 3768#L15-1 [2023-11-29 06:46:34,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:34,640 INFO L85 PathProgramCache]: Analyzing trace with hash -658151768, now seen corresponding path program 1 times [2023-11-29 06:46:34,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:34,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833540312] [2023-11-29 06:46:34,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:34,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:34,647 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:46:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:34,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:46:34,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:34,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1404661389, now seen corresponding path program 1 times [2023-11-29 06:46:34,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:34,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822766108] [2023-11-29 06:46:34,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:34,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:34,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:46:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:34,664 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:46:34,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:34,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1060289932, now seen corresponding path program 1 times [2023-11-29 06:46:34,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:34,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654439508] [2023-11-29 06:46:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:34,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:34,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-29 06:46:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:34,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:34,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:34,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-29 06:46:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:34,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:34,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 06:46:34,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:34,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654439508] [2023-11-29 06:46:34,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654439508] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:46:34,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445150180] [2023-11-29 06:46:34,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:34,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:34,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:34,808 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:34,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-29 06:46:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:34,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:46:34,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 06:46:34,918 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-29 06:46:35,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445150180] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:35,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:46:35,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2023-11-29 06:46:35,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458427518] [2023-11-29 06:46:35,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:35,244 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 06:46:35,244 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 06:46:35,244 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 06:46:35,244 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 06:46:35,244 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 06:46:35,244 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,244 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 06:46:35,244 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 06:46:35,244 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2023-11-29 06:46:35,244 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 06:46:35,244 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 06:46:35,245 INFO 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 06:46:35,247 INFO 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 06:46:35,249 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:35,250 INFO 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 06:46:35,251 INFO 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 06:46:35,253 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:35,254 INFO 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 06:46:35,257 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:35,259 INFO 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 06:46:35,289 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 06:46:35,289 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 06:46:35,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,290 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-29 06:46:35,293 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:35,293 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:35,304 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:35,305 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:35,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:35,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,308 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-29 06:46:35,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:35,311 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:35,325 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:35,325 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=3} Honda state: {fibo1_#in~n=3} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:35,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2023-11-29 06:46:35,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,329 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-29 06:46:35,332 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:35,332 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:35,346 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:35,346 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:35,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2023-11-29 06:46:35,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,350 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-29 06:46:35,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:35,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:35,364 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:35,364 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:35,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:35,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,369 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-29 06:46:35,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:35,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:35,387 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:35,387 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:35,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2023-11-29 06:46:35,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,390 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-29 06:46:35,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:35,393 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:35,405 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:35,405 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=1} Honda state: {fibo1_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:35,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2023-11-29 06:46:35,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,410 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-29 06:46:35,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:35,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:35,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:35,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,427 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-29 06:46:35,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 06:46:35,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:35,442 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 06:46:35,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2023-11-29 06:46:35,445 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 06:46:35,445 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 06:46:35,445 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 06:46:35,445 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 06:46:35,445 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 06:46:35,445 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,445 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 06:46:35,445 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 06:46:35,445 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2023-11-29 06:46:35,445 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 06:46:35,445 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 06:46:35,446 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:35,447 INFO 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 06:46:35,449 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:35,451 INFO 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 06:46:35,452 INFO 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 06:46:35,454 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:35,457 INFO 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 06:46:35,459 INFO 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 06:46:35,463 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:35,506 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 06:46:35,506 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 06:46:35,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,507 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-29 06:46:35,510 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 06:46:35,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:35,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:35,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:35,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:35,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:35,521 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:35,521 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:35,522 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:35,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2023-11-29 06:46:35,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,526 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-29 06:46:35,528 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 06:46:35,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:35,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:35,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:35,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:35,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:35,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:35,539 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:35,540 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:35,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2023-11-29 06:46:35,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,544 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-29 06:46:35,546 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 06:46:35,555 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:35,555 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:35,555 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:35,556 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:35,556 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:35,556 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:35,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:35,557 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:35,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2023-11-29 06:46:35,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,561 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-29 06:46:35,564 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 06:46:35,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:35,574 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:35,574 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:35,574 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:35,574 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:35,574 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:35,574 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:35,575 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:35,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:35,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,579 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-29 06:46:35,581 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 06:46:35,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:35,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:35,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:35,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:35,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:35,591 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:35,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:35,592 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:35,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:35,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,595 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-11-29 06:46:35,598 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 06:46:35,607 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:35,607 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:35,608 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:35,608 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:35,608 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:35,608 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:35,608 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:35,610 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:35,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2023-11-29 06:46:35,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,613 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2023-11-29 06:46:35,616 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 06:46:35,626 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:35,626 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:35,626 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:35,626 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:35,626 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:35,626 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:35,626 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:35,628 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:35,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2023-11-29 06:46:35,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,631 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2023-11-29 06:46:35,633 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 06:46:35,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:35,643 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:35,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:35,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:35,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:35,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:35,644 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:35,646 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 06:46:35,649 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 06:46:35,649 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 06:46:35,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:35,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:35,651 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:35,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2023-11-29 06:46:35,660 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 06:46:35,660 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 06:46:35,661 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 06:46:35,661 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-29 06:46:35,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2023-11-29 06:46:35,665 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 06:46:35,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:35,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:46:35,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:35,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:46:35,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:46:36,119 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2023-11-29 06:46:36,119 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 116 transitions. cyclomatic complexity: 25 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 06:46:36,518 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 116 transitions. cyclomatic complexity: 25. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 323 states and 426 transitions. Complement of second has 46 states. [2023-11-29 06:46:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2023-11-29 06:46:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-29 06:46:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2023-11-29 06:46:36,521 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2023-11-29 06:46:36,522 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:36,522 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2023-11-29 06:46:36,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:36,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2023-11-29 06:46:36,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:36,524 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 323 states and 426 transitions. [2023-11-29 06:46:36,530 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2023-11-29 06:46:36,535 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 323 states to 280 states and 379 transitions. [2023-11-29 06:46:36,535 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 183 [2023-11-29 06:46:36,535 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 187 [2023-11-29 06:46:36,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 280 states and 379 transitions. [2023-11-29 06:46:36,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 06:46:36,538 INFO L218 hiAutomatonCegarLoop]: Abstraction has 280 states and 379 transitions. [2023-11-29 06:46:36,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states and 379 transitions. [2023-11-29 06:46:36,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 246. [2023-11-29 06:46:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 156 states have (on average 1.1666666666666667) internal successors, (182), 161 states have internal predecessors, (182), 50 states have call successors, (51), 33 states have call predecessors, (51), 40 states have return successors, (92), 51 states have call predecessors, (92), 47 states have call successors, (92) [2023-11-29 06:46:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 325 transitions. [2023-11-29 06:46:36,555 INFO L240 hiAutomatonCegarLoop]: Abstraction has 246 states and 325 transitions. [2023-11-29 06:46:36,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:36,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:46:36,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:46:36,555 INFO L87 Difference]: Start difference. First operand 246 states and 325 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-29 06:46:36,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:36,709 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2023-11-29 06:46:36,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 148 transitions. [2023-11-29 06:46:36,711 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-29 06:46:36,713 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 145 transitions. [2023-11-29 06:46:36,713 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2023-11-29 06:46:36,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2023-11-29 06:46:36,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 145 transitions. [2023-11-29 06:46:36,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 06:46:36,714 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 145 transitions. [2023-11-29 06:46:36,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 145 transitions. [2023-11-29 06:46:36,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2023-11-29 06:46:36,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 76 states have (on average 1.131578947368421) internal successors, (86), 80 states have internal predecessors, (86), 20 states have call successors, (20), 15 states have call predecessors, (20), 20 states have return successors, (33), 20 states have call predecessors, (33), 17 states have call successors, (33) [2023-11-29 06:46:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2023-11-29 06:46:36,720 INFO L240 hiAutomatonCegarLoop]: Abstraction has 116 states and 139 transitions. [2023-11-29 06:46:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:46:36,722 INFO L428 stractBuchiCegarLoop]: Abstraction has 116 states and 139 transitions. [2023-11-29 06:46:36,722 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-29 06:46:36,722 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 139 transitions. [2023-11-29 06:46:36,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-29 06:46:36,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:46:36,724 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:46:36,725 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:36,725 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:36,726 INFO L748 eck$LassoCheckResult]: Stem: 5254#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5231#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5232#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5257#$Ultimate##0 ~n := #in~n; 5258#L10 assume !(~n < 1); 5245#L12 assume !(1 == ~n); 5210#L15 call #t~ret4 := fibo2(~n - 1);< 5215#$Ultimate##0 ~n := #in~n; 5216#L20 assume !(~n < 1); 5209#L22 assume !(1 == ~n); 5211#L25 call #t~ret6 := fibo1(~n - 1);< 5228#$Ultimate##0 ~n := #in~n; 5230#L10 assume !(~n < 1); 5248#L12 assume !(1 == ~n); 5242#L15 call #t~ret4 := fibo2(~n - 1);< 5251#$Ultimate##0 ~n := #in~n; 5300#L20 assume !(~n < 1); 5299#L22 assume !(1 == ~n); 5224#L25 call #t~ret6 := fibo1(~n - 1);< 5228#$Ultimate##0 ~n := #in~n; 5230#L10 assume !(~n < 1); 5248#L12 assume !(1 == ~n); 5242#L15 call #t~ret4 := fibo2(~n - 1);< 5251#$Ultimate##0 ~n := #in~n; 5300#L20 assume !(~n < 1); 5299#L22 assume !(1 == ~n); 5224#L25 call #t~ret6 := fibo1(~n - 1);< 5228#$Ultimate##0 ~n := #in~n; 5229#L10 assume !(~n < 1); 5261#L12 assume 1 == ~n;#res := 1; 5267#fibo1FINAL assume true; 5298#fibo1EXIT >#48#return; 5218#L25-1 call #t~ret7 := fibo1(~n - 2);< 5226#$Ultimate##0 ~n := #in~n; 5227#L10 assume ~n < 1;#res := 0; 5217#fibo1FINAL assume true; 5219#fibo1EXIT >#50#return; 5294#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5292#fibo2FINAL assume true; 5288#fibo2EXIT >#52#return; 5207#L15-1 call #t~ret5 := fibo2(~n - 2);< 5284#$Ultimate##0 ~n := #in~n; 5252#L20 assume ~n < 1;#res := 0; 5208#fibo2FINAL assume true; 5246#fibo2EXIT >#54#return; 5282#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5280#fibo1FINAL assume true; 5274#fibo1EXIT >#48#return; 5235#L25-1 [2023-11-29 06:46:36,726 INFO L750 eck$LassoCheckResult]: Loop: 5235#L25-1 call #t~ret7 := fibo1(~n - 2);< 5241#$Ultimate##0 ~n := #in~n; 5263#L10 assume !(~n < 1); 5259#L12 assume !(1 == ~n); 5221#L15 call #t~ret4 := fibo2(~n - 1);< 5266#$Ultimate##0 ~n := #in~n; 5279#L20 assume !(~n < 1); 5277#L22 assume !(1 == ~n); 5236#L25 call #t~ret6 := fibo1(~n - 1);< 5241#$Ultimate##0 ~n := #in~n; 5263#L10 assume !(~n < 1); 5259#L12 assume !(1 == ~n); 5221#L15 call #t~ret4 := fibo2(~n - 1);< 5266#$Ultimate##0 ~n := #in~n; 5279#L20 assume !(~n < 1); 5277#L22 assume !(1 == ~n); 5236#L25 call #t~ret6 := fibo1(~n - 1);< 5241#$Ultimate##0 ~n := #in~n; 5263#L10 assume !(~n < 1); 5259#L12 assume 1 == ~n;#res := 1; 5260#fibo1FINAL assume true; 5317#fibo1EXIT >#48#return; 5220#L25-1 call #t~ret7 := fibo1(~n - 2);< 5222#$Ultimate##0 ~n := #in~n; 5319#L10 assume ~n < 1;#res := 0; 5269#fibo1FINAL assume true; 5307#fibo1EXIT >#50#return; 5233#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5234#fibo2FINAL assume true; 5289#fibo2EXIT >#52#return; 5286#L15-1 call #t~ret5 := fibo2(~n - 2);< 5287#$Ultimate##0 ~n := #in~n; 5320#L20 assume ~n < 1;#res := 0; 5314#fibo2FINAL assume true; 5313#fibo2EXIT >#54#return; 5283#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5281#fibo1FINAL assume true; 5275#fibo1EXIT >#48#return; 5235#L25-1 [2023-11-29 06:46:36,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:36,727 INFO L85 PathProgramCache]: Analyzing trace with hash 316829921, now seen corresponding path program 1 times [2023-11-29 06:46:36,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:36,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958421754] [2023-11-29 06:46:36,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:36,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:36,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:46:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:36,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:36,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:46:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:36,916 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 06:46:36,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:36,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958421754] [2023-11-29 06:46:36,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958421754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:46:36,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724983409] [2023-11-29 06:46:36,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:36,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:36,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:36,918 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:36,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-29 06:46:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:36,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:46:36,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:37,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2023-11-29 06:46:37,089 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:46:37,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:46:37,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724983409] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:37,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:46:37,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2023-11-29 06:46:37,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632542768] [2023-11-29 06:46:37,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:37,309 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 06:46:37,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:37,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1700861918, now seen corresponding path program 1 times [2023-11-29 06:46:37,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:37,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16582928] [2023-11-29 06:46:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:37,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:37,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-29 06:46:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:37,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:37,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:46:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 06:46:37,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:37,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16582928] [2023-11-29 06:46:37,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16582928] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:46:37,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892696268] [2023-11-29 06:46:37,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:37,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:37,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:37,424 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:37,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-29 06:46:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:37,476 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:46:37,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 06:46:37,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-29 06:46:37,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892696268] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:37,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:46:37,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2023-11-29 06:46:37,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73028820] [2023-11-29 06:46:37,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:37,773 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 06:46:37,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:37,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:46:37,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:46:37,774 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. cyclomatic complexity: 25 Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-29 06:46:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:37,890 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2023-11-29 06:46:37,891 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2023-11-29 06:46:37,892 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-11-29 06:46:37,894 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2023-11-29 06:46:37,894 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2023-11-29 06:46:37,894 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2023-11-29 06:46:37,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2023-11-29 06:46:37,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 06:46:37,894 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 143 transitions. [2023-11-29 06:46:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2023-11-29 06:46:37,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2023-11-29 06:46:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 78 states have (on average 1.1153846153846154) internal successors, (87), 81 states have internal predecessors, (87), 20 states have call successors, (20), 16 states have call predecessors, (20), 20 states have return successors, (32), 20 states have call predecessors, (32), 17 states have call successors, (32) [2023-11-29 06:46:37,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2023-11-29 06:46:37,898 INFO L240 hiAutomatonCegarLoop]: Abstraction has 118 states and 139 transitions. [2023-11-29 06:46:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:46:37,900 INFO L428 stractBuchiCegarLoop]: Abstraction has 118 states and 139 transitions. [2023-11-29 06:46:37,900 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-29 06:46:37,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 139 transitions. [2023-11-29 06:46:37,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-11-29 06:46:37,901 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:46:37,901 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:46:37,903 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:37,903 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:37,903 INFO L748 eck$LassoCheckResult]: Stem: 6157#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6135#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 6136#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6159#$Ultimate##0 ~n := #in~n; 6162#L10 assume !(~n < 1); 6150#L12 assume !(1 == ~n); 6118#L15 call #t~ret4 := fibo2(~n - 1);< 6176#$Ultimate##0 ~n := #in~n; 6193#L20 assume !(~n < 1); 6117#L22 assume !(1 == ~n); 6119#L25 call #t~ret6 := fibo1(~n - 1);< 6139#$Ultimate##0 ~n := #in~n; 6141#L10 assume !(~n < 1); 6154#L12 assume !(1 == ~n); 6124#L15 call #t~ret4 := fibo2(~n - 1);< 6123#$Ultimate##0 ~n := #in~n; 6125#L20 assume !(~n < 1); 6156#L22 assume !(1 == ~n); 6133#L25 call #t~ret6 := fibo1(~n - 1);< 6139#$Ultimate##0 ~n := #in~n; 6141#L10 assume !(~n < 1); 6154#L12 assume !(1 == ~n); 6124#L15 call #t~ret4 := fibo2(~n - 1);< 6123#$Ultimate##0 ~n := #in~n; 6125#L20 assume !(~n < 1); 6156#L22 assume !(1 == ~n); 6133#L25 call #t~ret6 := fibo1(~n - 1);< 6139#$Ultimate##0 ~n := #in~n; 6140#L10 assume !(~n < 1); 6170#L12 assume 1 == ~n;#res := 1; 6174#fibo1FINAL assume true; 6220#fibo1EXIT >#48#return; 6127#L25-1 call #t~ret7 := fibo1(~n - 2);< 6218#$Ultimate##0 ~n := #in~n; 6153#L10 assume ~n < 1;#res := 0; 6126#fibo1FINAL assume true; 6128#fibo1EXIT >#50#return; 6216#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6215#fibo2FINAL assume true; 6192#fibo2EXIT >#52#return; 6115#L15-1 call #t~ret5 := fibo2(~n - 2);< 6191#$Ultimate##0 ~n := #in~n; 6155#L20 assume !(~n < 1); 6114#L22 assume 1 == ~n;#res := 1; 6116#fibo2FINAL assume true; 6190#fibo2EXIT >#54#return; 6188#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6186#fibo1FINAL assume true; 6183#fibo1EXIT >#48#return; 6164#L25-1 [2023-11-29 06:46:37,903 INFO L750 eck$LassoCheckResult]: Loop: 6164#L25-1 call #t~ret7 := fibo1(~n - 2);< 6131#$Ultimate##0 ~n := #in~n; 6228#L10 assume !(~n < 1); 6163#L12 assume !(1 == ~n); 6147#L15 call #t~ret4 := fibo2(~n - 1);< 6172#$Ultimate##0 ~n := #in~n; 6171#L20 assume !(~n < 1); 6168#L22 assume !(1 == ~n); 6165#L25 call #t~ret6 := fibo1(~n - 1);< 6143#$Ultimate##0 ~n := #in~n; 6177#L10 assume !(~n < 1); 6163#L12 assume !(1 == ~n); 6147#L15 call #t~ret4 := fibo2(~n - 1);< 6172#$Ultimate##0 ~n := #in~n; 6171#L20 assume !(~n < 1); 6168#L22 assume !(1 == ~n); 6165#L25 call #t~ret6 := fibo1(~n - 1);< 6143#$Ultimate##0 ~n := #in~n; 6177#L10 assume !(~n < 1); 6163#L12 assume 1 == ~n;#res := 1; 6167#fibo1FINAL assume true; 6223#fibo1EXIT >#48#return; 6181#L25-1 call #t~ret7 := fibo1(~n - 2);< 6222#$Ultimate##0 ~n := #in~n; 6229#L10 assume ~n < 1;#res := 0; 6227#fibo1FINAL assume true; 6221#fibo1EXIT >#50#return; 6219#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6217#fibo2FINAL assume true; 6213#fibo2EXIT >#52#return; 6158#L15-1 call #t~ret5 := fibo2(~n - 2);< 6203#$Ultimate##0 ~n := #in~n; 6208#L20 assume !(~n < 1); 6206#L22 assume 1 == ~n;#res := 1; 6205#fibo2FINAL assume true; 6202#fibo2EXIT >#54#return; 6201#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6185#fibo1FINAL assume true; 6182#fibo1EXIT >#48#return; 6164#L25-1 [2023-11-29 06:46:37,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:37,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1955236566, now seen corresponding path program 1 times [2023-11-29 06:46:37,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:37,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481810251] [2023-11-29 06:46:37,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:37,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:37,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:46:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:38,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:38,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:38,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:38,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:46:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:46:38,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:38,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481810251] [2023-11-29 06:46:38,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481810251] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:46:38,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038595570] [2023-11-29 06:46:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:38,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:38,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:38,070 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:38,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-29 06:46:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:38,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 06:46:38,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:38,210 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:46:38,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:46:38,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038595570] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:38,436 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:46:38,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2023-11-29 06:46:38,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102088551] [2023-11-29 06:46:38,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:38,437 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 06:46:38,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:38,437 INFO L85 PathProgramCache]: Analyzing trace with hash -463668299, now seen corresponding path program 1 times [2023-11-29 06:46:38,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:38,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980037258] [2023-11-29 06:46:38,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:38,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:38,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:46:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:38,450 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:46:38,768 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 06:46:38,768 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 06:46:38,768 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 06:46:38,768 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 06:46:38,768 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 06:46:38,768 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:38,769 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 06:46:38,769 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 06:46:38,769 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration8_Loop [2023-11-29 06:46:38,769 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 06:46:38,769 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 06:46:38,770 INFO 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 06:46:38,772 INFO 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 06:46:38,776 INFO 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 06:46:38,777 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:38,779 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:38,781 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:38,783 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:38,784 INFO 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 06:46:38,786 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:38,820 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 06:46:38,821 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 06:46:38,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:38,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:38,822 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:38,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-29 06:46:38,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:38,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:38,839 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:38,839 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=4} Honda state: {fibo2_#in~n=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:38,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2023-11-29 06:46:38,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:38,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:38,843 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:38,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-29 06:46:38,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:38,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:38,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2023-11-29 06:46:38,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:38,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:38,866 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:38,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2023-11-29 06:46:38,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 06:46:38,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:38,882 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 06:46:38,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2023-11-29 06:46:38,885 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 06:46:38,885 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 06:46:38,885 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 06:46:38,885 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 06:46:38,885 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 06:46:38,885 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:38,885 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 06:46:38,885 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 06:46:38,885 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration8_Loop [2023-11-29 06:46:38,885 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 06:46:38,885 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 06:46:38,886 INFO 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 06:46:38,890 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:38,892 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:38,899 INFO 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 06:46:38,901 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:38,902 INFO 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 06:46:38,903 INFO 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 06:46:38,904 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:38,906 INFO 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 06:46:38,940 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 06:46:38,940 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 06:46:38,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:38,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:38,941 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:38,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2023-11-29 06:46:38,943 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 06:46:38,954 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:38,954 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:38,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:38,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:38,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:38,955 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:38,955 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:38,956 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:38,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2023-11-29 06:46:38,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:38,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:38,960 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:38,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2023-11-29 06:46:38,962 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 06:46:38,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:38,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:38,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:38,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:38,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:38,973 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:38,973 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:38,974 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:38,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:38,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:38,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:38,977 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:38,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2023-11-29 06:46:38,979 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 06:46:38,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:38,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:38,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:38,989 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:38,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:38,990 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:38,990 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:38,992 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 06:46:38,995 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 06:46:38,995 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 06:46:38,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:38,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:38,996 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:38,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2023-11-29 06:46:38,998 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 06:46:38,998 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 06:46:38,998 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 06:46:38,998 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2023-11-29 06:46:39,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:39,001 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 06:46:39,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:39,065 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:46:39,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:39,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:46:39,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:39,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:46:39,560 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 11 loop predicates [2023-11-29 06:46:39,560 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 06:46:39,698 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 142 states and 165 transitions. Complement of second has 13 states. [2023-11-29 06:46:39,699 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 06:46:39,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 06:46:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2023-11-29 06:46:39,700 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 49 letters. Loop has 39 letters. [2023-11-29 06:46:39,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:39,700 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 06:46:39,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:39,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:46:39,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:40,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:40,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:46:40,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:46:40,289 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 11 loop predicates [2023-11-29 06:46:40,289 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 06:46:40,448 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 142 states and 165 transitions. Complement of second has 13 states. [2023-11-29 06:46:40,448 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 06:46:40,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 06:46:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2023-11-29 06:46:40,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 49 letters. Loop has 39 letters. [2023-11-29 06:46:40,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:40,449 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 06:46:40,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:40,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 06:46:40,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:40,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:46:40,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:46:41,002 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 11 loop predicates [2023-11-29 06:46:41,002 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23 Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 06:46:41,438 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 118 states and 139 transitions. cyclomatic complexity: 23. Second operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) Result 559 states and 690 transitions. Complement of second has 139 states. [2023-11-29 06:46:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 15 states 2 stem states 12 non-accepting loop states 1 accepting loop states [2023-11-29 06:46:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 9 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (10), 4 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 06:46:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 81 transitions. [2023-11-29 06:46:41,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 81 transitions. Stem has 49 letters. Loop has 39 letters. [2023-11-29 06:46:41,441 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:41,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 81 transitions. Stem has 88 letters. Loop has 39 letters. [2023-11-29 06:46:41,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:41,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 15 states and 81 transitions. Stem has 49 letters. Loop has 78 letters. [2023-11-29 06:46:41,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:41,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 559 states and 690 transitions. [2023-11-29 06:46:41,453 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2023-11-29 06:46:41,457 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 559 states to 402 states and 496 transitions. [2023-11-29 06:46:41,457 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 227 [2023-11-29 06:46:41,457 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 248 [2023-11-29 06:46:41,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 402 states and 496 transitions. [2023-11-29 06:46:41,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 06:46:41,458 INFO L218 hiAutomatonCegarLoop]: Abstraction has 402 states and 496 transitions. [2023-11-29 06:46:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states and 496 transitions. [2023-11-29 06:46:41,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 330. [2023-11-29 06:46:41,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 212 states have (on average 1.1367924528301887) internal successors, (241), 224 states have internal predecessors, (241), 62 states have call successors, (64), 43 states have call predecessors, (64), 56 states have return successors, (94), 62 states have call predecessors, (94), 59 states have call successors, (94) [2023-11-29 06:46:41,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 399 transitions. [2023-11-29 06:46:41,470 INFO L240 hiAutomatonCegarLoop]: Abstraction has 330 states and 399 transitions. [2023-11-29 06:46:41,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:41,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:46:41,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:46:41,471 INFO L87 Difference]: Start difference. First operand 330 states and 399 transitions. Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-29 06:46:41,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:41,702 INFO L93 Difference]: Finished difference Result 228 states and 240 transitions. [2023-11-29 06:46:41,702 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 240 transitions. [2023-11-29 06:46:41,705 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2023-11-29 06:46:41,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 117 states and 123 transitions. [2023-11-29 06:46:41,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2023-11-29 06:46:41,707 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 102 [2023-11-29 06:46:41,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 123 transitions. [2023-11-29 06:46:41,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 06:46:41,707 INFO L218 hiAutomatonCegarLoop]: Abstraction has 117 states and 123 transitions. [2023-11-29 06:46:41,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 123 transitions. [2023-11-29 06:46:41,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2023-11-29 06:46:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 78 states have (on average 1.064102564102564) internal successors, (83), 81 states have internal predecessors, (83), 21 states have call successors, (21), 18 states have call predecessors, (21), 17 states have return successors, (18), 16 states have call predecessors, (18), 16 states have call successors, (18) [2023-11-29 06:46:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2023-11-29 06:46:41,711 INFO L240 hiAutomatonCegarLoop]: Abstraction has 116 states and 122 transitions. [2023-11-29 06:46:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:46:41,712 INFO L428 stractBuchiCegarLoop]: Abstraction has 116 states and 122 transitions. [2023-11-29 06:46:41,712 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-29 06:46:41,712 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 122 transitions. [2023-11-29 06:46:41,713 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2023-11-29 06:46:41,713 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 06:46:41,713 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 06:46:41,714 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:41,714 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:46:41,714 INFO L748 eck$LassoCheckResult]: Stem: 9106#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 9084#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 9085#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 9109#$Ultimate##0 ~n := #in~n; 9110#L10 assume !(~n < 1); 9094#L12 assume !(1 == ~n); 9067#L15 call #t~ret4 := fibo2(~n - 1);< 9071#$Ultimate##0 ~n := #in~n; 9072#L20 assume !(~n < 1); 9066#L22 assume !(1 == ~n); 9068#L25 call #t~ret6 := fibo1(~n - 1);< 9080#$Ultimate##0 ~n := #in~n; 9083#L10 assume !(~n < 1); 9097#L12 assume !(1 == ~n); 9089#L15 call #t~ret4 := fibo2(~n - 1);< 9099#$Ultimate##0 ~n := #in~n; 9103#L20 assume !(~n < 1); 9104#L22 assume !(1 == ~n); 9081#L25 call #t~ret6 := fibo1(~n - 1);< 9080#$Ultimate##0 ~n := #in~n; 9082#L10 assume !(~n < 1); 9142#L12 assume 1 == ~n;#res := 1; 9141#fibo1FINAL assume true; 9138#fibo1EXIT >#48#return; 9136#L25-1 call #t~ret7 := fibo1(~n - 2);< 9137#$Ultimate##0 ~n := #in~n; 9140#L10 assume ~n < 1;#res := 0; 9139#fibo1FINAL assume true; 9135#fibo1EXIT >#50#return; 9134#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 9133#fibo2FINAL assume true; 9131#fibo2EXIT >#52#return; 9127#L15-1 call #t~ret5 := fibo2(~n - 2);< 9128#$Ultimate##0 ~n := #in~n; 9132#L20 assume !(~n < 1); 9130#L22 assume 1 == ~n;#res := 1; 9129#fibo2FINAL assume true; 9126#fibo2EXIT >#54#return; 9125#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 9124#fibo1FINAL assume true; 9123#fibo1EXIT >#48#return; 9093#L25-1 call #t~ret7 := fibo1(~n - 2);< 9122#$Ultimate##0 ~n := #in~n; 9170#L10 assume !(~n < 1); 9091#L12 assume !(1 == ~n); 9076#L15 call #t~ret4 := fibo2(~n - 1);< 9151#$Ultimate##0 ~n := #in~n; 9167#L20 assume !(~n < 1); 9164#L22 assume !(1 == ~n); 9098#L25 call #t~ret6 := fibo1(~n - 1);< 9175#$Ultimate##0 ~n := #in~n; 9178#L10 assume !(~n < 1); 9177#L12 assume !(1 == ~n); 9064#L15 [2023-11-29 06:46:41,714 INFO L750 eck$LassoCheckResult]: Loop: 9064#L15 call #t~ret4 := fibo2(~n - 1);< 9069#$Ultimate##0 ~n := #in~n; 9070#L20 assume !(~n < 1); 9063#L22 assume !(1 == ~n); 9065#L25 call #t~ret6 := fibo1(~n - 1);< 9088#$Ultimate##0 ~n := #in~n; 9153#L10 assume !(~n < 1); 9149#L12 assume !(1 == ~n); 9064#L15 [2023-11-29 06:46:41,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:41,715 INFO L85 PathProgramCache]: Analyzing trace with hash -259516613, now seen corresponding path program 2 times [2023-11-29 06:46:41,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:41,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254727157] [2023-11-29 06:46:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:41,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 06:46:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:41,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:41,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-29 06:46:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:41,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-29 06:46:41,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:41,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-29 06:46:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:41,865 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 06:46:41,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:46:41,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254727157] [2023-11-29 06:46:41,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254727157] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:46:41,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055895283] [2023-11-29 06:46:41,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:46:41,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:46:41,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:41,867 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:46:41,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2023-11-29 06:46:41,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:46:41,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:46:41,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:46:41,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:41,977 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 06:46:41,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:46:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 06:46:42,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055895283] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:46:42,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:46:42,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2023-11-29 06:46:42,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875627935] [2023-11-29 06:46:42,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:46:42,083 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 06:46:42,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:42,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1544065082, now seen corresponding path program 2 times [2023-11-29 06:46:42,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:46:42,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925625458] [2023-11-29 06:46:42,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:46:42,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:46:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:42,087 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 06:46:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 06:46:42,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 06:46:42,207 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 06:46:42,207 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 06:46:42,207 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 06:46:42,207 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 06:46:42,207 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 06:46:42,207 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:42,208 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 06:46:42,208 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 06:46:42,208 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2023-11-29 06:46:42,208 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 06:46:42,208 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 06:46:42,208 INFO 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 06:46:42,210 INFO 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 06:46:42,219 INFO 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 06:46:42,220 INFO 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 06:46:42,222 INFO 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 06:46:42,223 INFO 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 06:46:42,224 INFO 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 06:46:42,226 INFO 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 06:46:42,262 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 06:46:42,262 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 06:46:42,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:42,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:42,263 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:42,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2023-11-29 06:46:42,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:42,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:42,277 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 06:46:42,277 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 06:46:42,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:42,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:42,280 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:42,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2023-11-29 06:46:42,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 06:46:42,282 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:42,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2023-11-29 06:46:42,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:42,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:42,305 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:42,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2023-11-29 06:46:42,307 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 06:46:42,307 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 06:46:44,389 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 06:46:44,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:44,392 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 06:46:44,392 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 06:46:44,392 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 06:46:44,392 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 06:46:44,393 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 06:46:44,393 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:44,393 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 06:46:44,393 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 06:46:44,393 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2023-11-29 06:46:44,393 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 06:46:44,393 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 06:46:44,393 INFO 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 06:46:44,395 INFO 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 06:46:44,401 INFO 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 06:46:44,402 INFO 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 06:46:44,403 INFO 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 06:46:44,404 INFO 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 06:46:44,406 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 06:46:44,407 INFO 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 06:46:44,438 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 06:46:44,439 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 06:46:44,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:44,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:44,440 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:44,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2023-11-29 06:46:44,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 06:46:44,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:44,452 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:44,452 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:44,452 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:44,452 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:44,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:44,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:44,453 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 06:46:44,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2023-11-29 06:46:44,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:44,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:44,456 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:44,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2023-11-29 06:46:44,458 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 06:46:44,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 06:46:44,469 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 06:46:44,469 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 06:46:44,469 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 06:46:44,469 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 06:46:44,470 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 06:46:44,470 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 06:46:44,473 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 06:46:44,474 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-29 06:46:44,474 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 06:46:44,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 06:46:44,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:46:44,475 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 06:46:44,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2023-11-29 06:46:44,477 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 06:46:44,477 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 06:46:44,477 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 06:46:44,477 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2023-11-29 06:46:44,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2023-11-29 06:46:44,480 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 06:46:44,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:44,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 06:46:44,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:44,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:46:44,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:44,788 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 06:46:44,789 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 06:46:44,789 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:46:44,856 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 130 states and 137 transitions. Complement of second has 19 states. [2023-11-29 06:46:44,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-29 06:46:44,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:46:44,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2023-11-29 06:46:44,857 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 17 transitions. Stem has 53 letters. Loop has 8 letters. [2023-11-29 06:46:44,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:44,857 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 06:46:44,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:44,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2023-11-29 06:46:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:44,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 06:46:44,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:45,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:46:45,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:45,196 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 06:46:45,197 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2023-11-29 06:46:45,197 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:46:45,286 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 136 states and 143 transitions. Complement of second has 21 states. [2023-11-29 06:46:45,286 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 06:46:45,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:46:45,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 20 transitions. [2023-11-29 06:46:45,287 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 20 transitions. Stem has 53 letters. Loop has 8 letters. [2023-11-29 06:46:45,287 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:45,287 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 06:46:45,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:46:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:45,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 06:46:45,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:46:45,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 06:46:45,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:46:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:46:45,598 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2023-11-29 06:46:45,598 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:46:45,698 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 116 states and 122 transitions. cyclomatic complexity: 9. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 189 states and 199 transitions. Complement of second has 30 states. [2023-11-29 06:46:45,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2023-11-29 06:46:45,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:46:45,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2023-11-29 06:46:45,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 53 letters. Loop has 8 letters. [2023-11-29 06:46:45,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:45,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 61 letters. Loop has 8 letters. [2023-11-29 06:46:45,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:45,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 53 letters. Loop has 16 letters. [2023-11-29 06:46:45,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 06:46:45,700 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 199 transitions. [2023-11-29 06:46:45,701 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 06:46:45,701 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 0 states and 0 transitions. [2023-11-29 06:46:45,701 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-29 06:46:45,701 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-29 06:46:45,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-29 06:46:45,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:46:45,702 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 06:46:45,702 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 06:46:45,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:46:45,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:46:45,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:46:45,702 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 9 states have internal predecessors, (34), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-29 06:46:45,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:46:45,702 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-29 06:46:45,703 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-29 06:46:45,703 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 06:46:45,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 06:46:45,703 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-29 06:46:45,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-29 06:46:45,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-29 06:46:45,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 06:46:45,703 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 06:46:45,703 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 06:46:45,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:46:45,704 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 06:46:45,704 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-29 06:46:45,704 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-29 06:46:45,704 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 06:46:45,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-29 06:46:45,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:46:45 BoogieIcfgContainer [2023-11-29 06:46:45,710 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 06:46:45,710 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 06:46:45,710 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 06:46:45,710 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 06:46:45,711 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:46:27" (3/4) ... [2023-11-29 06:46:45,712 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 06:46:45,712 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 06:46:45,713 INFO L158 Benchmark]: Toolchain (without parser) took 18711.51ms. Allocated memory was 151.0MB in the beginning and 224.4MB in the end (delta: 73.4MB). Free memory was 113.5MB in the beginning and 64.4MB in the end (delta: 49.1MB). Peak memory consumption was 122.9MB. Max. memory is 16.1GB. [2023-11-29 06:46:45,713 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 151.0MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:46:45,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.35ms. Allocated memory is still 151.0MB. Free memory was 113.0MB in the beginning and 103.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 06:46:45,714 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.21ms. Allocated memory is still 151.0MB. Free memory was 103.0MB in the beginning and 101.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:46:45,714 INFO L158 Benchmark]: Boogie Preprocessor took 27.04ms. Allocated memory is still 151.0MB. Free memory was 101.7MB in the beginning and 100.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:46:45,714 INFO L158 Benchmark]: RCFGBuilder took 262.97ms. Allocated memory is still 151.0MB. Free memory was 100.0MB in the beginning and 90.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 06:46:45,714 INFO L158 Benchmark]: BuchiAutomizer took 18212.24ms. Allocated memory was 151.0MB in the beginning and 224.4MB in the end (delta: 73.4MB). Free memory was 90.4MB in the beginning and 64.4MB in the end (delta: 26.0MB). Peak memory consumption was 99.8MB. Max. memory is 16.1GB. [2023-11-29 06:46:45,715 INFO L158 Benchmark]: Witness Printer took 2.52ms. Allocated memory is still 224.4MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:46:45,716 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 151.0MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.35ms. Allocated memory is still 151.0MB. Free memory was 113.0MB in the beginning and 103.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.21ms. Allocated memory is still 151.0MB. Free memory was 103.0MB in the beginning and 101.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.04ms. Allocated memory is still 151.0MB. Free memory was 101.7MB in the beginning and 100.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 262.97ms. Allocated memory is still 151.0MB. Free memory was 100.0MB in the beginning and 90.4MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 18212.24ms. Allocated memory was 151.0MB in the beginning and 224.4MB in the end (delta: 73.4MB). Free memory was 90.4MB in the beginning and 64.4MB in the end (delta: 26.0MB). Peak memory consumption was 99.8MB. Max. memory is 16.1GB. * Witness Printer took 2.52ms. Allocated memory is still 224.4MB. Free memory is still 64.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (8 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function n and consists of 15 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 18.1s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 11.1s. Construction of modules took 1.3s. Büchi inclusion checks took 5.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 180 StatesRemovedByMinimization, 11 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 [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 10/51 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 772 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 745 mSDsluCounter, 1307 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 973 mSDsCounter, 379 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2228 IncrementalHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 379 mSolverCounterUnsat, 334 mSDtfsCounter, 2228 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI4 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp74 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf90 smp81 dnf100 smp100 tf113 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 20ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 20 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.7s 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 06:46:45,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2023-11-29 06:46:45,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:46,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2023-11-29 06:46:46,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-11-29 06:46:46,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-29 06:46:46,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 06:46:46,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 06:46:47,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 06:46:47,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 06:46:47,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd9503e8-a4d4-418d-a6cd-0eeb460b37be/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