./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/Fibonacci05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/Fibonacci05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97829031814878890268a6b8dbba5c3e987e2ec78ab2dc94181f9e68090060bd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:41:04,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:41:04,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:41:04,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:41:04,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:41:04,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:41:04,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:41:04,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:41:04,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:41:04,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:41:04,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:41:04,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:41:04,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:41:04,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:41:04,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:41:04,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:41:04,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:41:04,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:41:04,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:41:04,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:41:04,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:41:04,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:41:04,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:41:04,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:41:04,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:41:04,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:41:04,516 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:41:04,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:41:04,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:41:04,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:41:04,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:41:04,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:41:04,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:41:04,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:41:04,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:41:04,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:41:04,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:41:04,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:41:04,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:41:04,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:41:04,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:41:04,525 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-12-13 19:41:04,547 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:41:04,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:41:04,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:41:04,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:41:04,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:41:04,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:41:04,549 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:41:04,550 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 19:41:04,550 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 19:41:04,550 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 19:41:04,550 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 19:41:04,550 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 19:41:04,550 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 19:41:04,551 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:41:04,551 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:41:04,551 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:41:04,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:41:04,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:41:04,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:41:04,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 19:41:04,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 19:41:04,552 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 19:41:04,552 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:41:04,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:41:04,552 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 19:41:04,552 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:41:04,553 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 19:41:04,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:41:04,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:41:04,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:41:04,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:41:04,554 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 19:41:04,554 INFO L138 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_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97829031814878890268a6b8dbba5c3e987e2ec78ab2dc94181f9e68090060bd [2022-12-13 19:41:04,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:41:04,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:41:04,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:41:04,742 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:41:04,742 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:41:04,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive/Fibonacci05.c [2022-12-13 19:41:07,340 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:41:07,484 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:41:07,484 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/sv-benchmarks/c/recursive/Fibonacci05.c [2022-12-13 19:41:07,488 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/data/9d62e665f/66e4780c5e12442988094bf89a300724/FLAG815381475 [2022-12-13 19:41:07,912 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/data/9d62e665f/66e4780c5e12442988094bf89a300724 [2022-12-13 19:41:07,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:41:07,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:41:07,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:41:07,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:41:07,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:41:07,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:41:07" (1/1) ... [2022-12-13 19:41:07,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34585b19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:07, skipping insertion in model container [2022-12-13 19:41:07,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:41:07" (1/1) ... [2022-12-13 19:41:07,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:41:07,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:41:08,031 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/sv-benchmarks/c/recursive/Fibonacci05.c[746,759] [2022-12-13 19:41:08,031 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:41:08,040 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:41:08,049 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/sv-benchmarks/c/recursive/Fibonacci05.c[746,759] [2022-12-13 19:41:08,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:41:08,058 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:41:08,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08 WrapperNode [2022-12-13 19:41:08,059 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:41:08,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:41:08,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:41:08,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:41:08,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08" (1/1) ... [2022-12-13 19:41:08,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08" (1/1) ... [2022-12-13 19:41:08,080 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-12-13 19:41:08,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:41:08,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:41:08,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:41:08,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:41:08,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08" (1/1) ... [2022-12-13 19:41:08,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08" (1/1) ... [2022-12-13 19:41:08,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08" (1/1) ... [2022-12-13 19:41:08,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08" (1/1) ... [2022-12-13 19:41:08,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08" (1/1) ... [2022-12-13 19:41:08,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08" (1/1) ... [2022-12-13 19:41:08,091 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08" (1/1) ... [2022-12-13 19:41:08,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08" (1/1) ... [2022-12-13 19:41:08,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:41:08,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:41:08,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:41:08,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:41:08,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08" (1/1) ... [2022-12-13 19:41:08,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:08,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:08,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:08,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 19:41:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2022-12-13 19:41:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2022-12-13 19:41:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:41:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:41:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:41:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:41:08,195 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:41:08,197 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:41:08,272 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:41:08,276 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:41:08,277 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:41:08,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:41:08 BoogieIcfgContainer [2022-12-13 19:41:08,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:41:08,279 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 19:41:08,279 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 19:41:08,282 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 19:41:08,283 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:41:08,283 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 07:41:07" (1/3) ... [2022-12-13 19:41:08,284 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5fc6e7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 07:41:08, skipping insertion in model container [2022-12-13 19:41:08,284 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:41:08,284 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:41:08" (2/3) ... [2022-12-13 19:41:08,285 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5fc6e7aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 07:41:08, skipping insertion in model container [2022-12-13 19:41:08,285 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 19:41:08,285 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:41:08" (3/3) ... [2022-12-13 19:41:08,286 INFO L332 chiAutomizerObserver]: Analyzing ICFG Fibonacci05.c [2022-12-13 19:41:08,340 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 19:41:08,340 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 19:41:08,341 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 19:41:08,341 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 19:41:08,341 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 19:41:08,341 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 19:41:08,341 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 19:41:08,341 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 19:41:08,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:41:08,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 19:41:08,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:41:08,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:41:08,374 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 19:41:08,374 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 19:41:08,375 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 19:41:08,375 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:41:08,377 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 19:41:08,377 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:41:08,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:41:08,377 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 19:41:08,378 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 19:41:08,385 INFO L748 eck$LassoCheckResult]: Stem: 16#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 8#L29true call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 13#$Ultimate##0true [2022-12-13 19:41:08,385 INFO L750 eck$LassoCheckResult]: Loop: 13#$Ultimate##0true ~n := #in~n; 4#L17true assume !(~n < 1); 17#L19true assume !(1 == ~n); 15#L22true call #t~ret4 := fibonacci(~n - 1);< 13#$Ultimate##0true [2022-12-13 19:41:08,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:08,391 INFO L85 PathProgramCache]: Analyzing trace with hash 42781, now seen corresponding path program 1 times [2022-12-13 19:41:08,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:08,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941820049] [2022-12-13 19:41:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:08,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:08,488 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:41:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:08,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:41:08,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:08,508 INFO L85 PathProgramCache]: Analyzing trace with hash 927641, now seen corresponding path program 1 times [2022-12-13 19:41:08,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:08,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900490958] [2022-12-13 19:41:08,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:08,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:08,516 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:41:08,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:08,520 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:41:08,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:08,521 INFO L85 PathProgramCache]: Analyzing trace with hash 854450357, now seen corresponding path program 1 times [2022-12-13 19:41:08,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:08,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582803503] [2022-12-13 19:41:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:08,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:08,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:41:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:08,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:41:08,628 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:41:08,629 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:41:08,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:41:08,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:41:08,629 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:41:08,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:08,630 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:41:08,630 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:41:08,630 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci05.c_Iteration1_Loop [2022-12-13 19:41:08,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:41:08,630 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:41:08,646 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:08,657 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:08,659 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:08,662 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:08,670 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:08,718 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:41:08,718 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:41:08,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:08,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:08,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:08,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 19:41:08,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:41:08,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:08,742 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:41:08,742 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 19:41:08,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:41:08,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:08,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:08,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:08,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 19:41:08,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:41:08,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:08,762 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:41:08,763 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret5=0} Honda state: {fibonacci_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 19:41:08,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 19:41:08,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:08,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:08,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:08,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 19:41:08,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:41:08,770 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:08,781 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:41:08,781 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_~n=0} Honda state: {fibonacci_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 19:41:08,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 19:41:08,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:08,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:08,786 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:08,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 19:41:08,788 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:41:08,788 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:08,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-12-13 19:41:08,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:08,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:08,804 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:08,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 19:41:08,806 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:41:08,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:08,867 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:41:08,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-12-13 19:41:08,871 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:41:08,871 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:41:08,871 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:41:08,871 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:41:08,871 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:41:08,871 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:08,871 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:41:08,872 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:41:08,872 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci05.c_Iteration1_Loop [2022-12-13 19:41:08,872 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:41:08,872 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:41:08,873 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:08,875 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:08,877 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:08,880 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:08,887 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:08,923 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:41:08,926 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:41:08,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:08,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:08,929 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:08,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 19:41:08,931 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 [2022-12-13 19:41:08,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:41:08,941 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:41:08,942 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:41:08,942 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:41:08,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:41:08,943 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:41:08,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:41:08,945 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:41:08,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 19:41:08,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:08,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:08,949 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:08,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 19:41:08,951 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 [2022-12-13 19:41:08,962 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:41:08,962 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:41:08,962 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:41:08,962 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:41:08,962 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:41:08,963 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:41:08,963 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:41:08,965 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:41:08,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-12-13 19:41:08,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:08,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:08,969 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:08,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 19:41:08,971 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 [2022-12-13 19:41:08,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:41:08,981 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:41:08,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:41:08,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:41:08,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:41:08,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:41:08,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:41:08,984 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:41:08,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 19:41:08,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:08,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:08,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:08,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 19:41:08,991 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 [2022-12-13 19:41:09,001 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:41:09,001 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:41:09,001 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:41:09,001 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:41:09,001 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:41:09,002 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:41:09,002 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:41:09,005 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:41:09,008 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 19:41:09,009 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 19:41:09,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:09,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:09,032 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:09,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 19:41:09,034 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:41:09,034 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:41:09,035 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:41:09,035 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2022-12-13 19:41:09,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 19:41:09,040 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:41:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:09,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:41:09,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:09,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:41:09,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:41:09,150 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-12-13 19:41:09,151 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:41:09,234 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 47 states and 59 transitions. Complement of second has 12 states. [2022-12-13 19:41:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 19:41:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:41:09,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-12-13 19:41:09,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-12-13 19:41:09,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:09,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-12-13 19:41:09,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:09,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-12-13 19:41:09,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:09,246 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2022-12-13 19:41:09,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 19:41:09,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 25 states and 34 transitions. [2022-12-13 19:41:09,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-12-13 19:41:09,256 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-12-13 19:41:09,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-12-13 19:41:09,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:41:09,257 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-12-13 19:41:09,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-12-13 19:41:09,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-12-13 19:41:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 19:41:09,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-12-13 19:41:09,281 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-12-13 19:41:09,281 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-12-13 19:41:09,281 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 19:41:09,281 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-12-13 19:41:09,282 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 19:41:09,282 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:41:09,282 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:41:09,282 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:41:09,282 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:41:09,283 INFO L748 eck$LassoCheckResult]: Stem: 131#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 132#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 120#L29 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 133#$Ultimate##0 ~n := #in~n; 127#L17 assume !(~n < 1); 128#L19 assume !(1 == ~n); 122#L22 call #t~ret4 := fibonacci(~n - 1);< 129#$Ultimate##0 ~n := #in~n; 124#L17 assume ~n < 1;#res := 0; 125#fibonacciFINAL assume true; 130#fibonacciEXIT >#29#return; 119#L22-1 [2022-12-13 19:41:09,283 INFO L750 eck$LassoCheckResult]: Loop: 119#L22-1 call #t~ret5 := fibonacci(~n - 2);< 123#$Ultimate##0 ~n := #in~n; 138#L17 assume !(~n < 1); 137#L19 assume !(1 == ~n); 121#L22 call #t~ret4 := fibonacci(~n - 1);< 123#$Ultimate##0 ~n := #in~n; 138#L17 assume ~n < 1;#res := 0; 135#fibonacciFINAL assume true; 136#fibonacciEXIT >#29#return; 119#L22-1 [2022-12-13 19:41:09,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:09,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1391758089, now seen corresponding path program 1 times [2022-12-13 19:41:09,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:09,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455600780] [2022-12-13 19:41:09,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:09,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:41:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:41:09,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:41:09,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455600780] [2022-12-13 19:41:09,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455600780] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:41:09,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:41:09,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:41:09,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54066249] [2022-12-13 19:41:09,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:41:09,398 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 19:41:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:09,398 INFO L85 PathProgramCache]: Analyzing trace with hash 924369961, now seen corresponding path program 1 times [2022-12-13 19:41:09,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:09,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937448377] [2022-12-13 19:41:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:09,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:09,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 19:41:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:41:09,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:41:09,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937448377] [2022-12-13 19:41:09,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937448377] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:41:09,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:41:09,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:41:09,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296997542] [2022-12-13 19:41:09,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:41:09,456 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 19:41:09,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:41:09,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:41:09,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:41:09,459 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 19:41:09,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-12-13 19:41:09,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:41:09,528 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-12-13 19:41:09,529 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-12-13 19:41:09,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 19:41:09,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-12-13 19:41:09,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-12-13 19:41:09,532 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-12-13 19:41:09,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-12-13 19:41:09,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:41:09,532 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-12-13 19:41:09,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-12-13 19:41:09,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-13 19:41:09,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 19:41:09,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-12-13 19:41:09,535 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-12-13 19:41:09,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:41:09,536 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-12-13 19:41:09,536 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 19:41:09,536 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-12-13 19:41:09,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 19:41:09,536 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:41:09,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:41:09,537 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:41:09,537 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-13 19:41:09,538 INFO L748 eck$LassoCheckResult]: Stem: 204#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 205#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 193#L29 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 206#$Ultimate##0 ~n := #in~n; 199#L17 assume !(~n < 1); 200#L19 assume !(1 == ~n); 194#L22 call #t~ret4 := fibonacci(~n - 1);< 201#$Ultimate##0 ~n := #in~n; 197#L17 assume !(~n < 1); 198#L19 assume 1 == ~n;#res := 1; 208#fibonacciFINAL assume true; 211#fibonacciEXIT >#29#return; 192#L22-1 [2022-12-13 19:41:09,538 INFO L750 eck$LassoCheckResult]: Loop: 192#L22-1 call #t~ret5 := fibonacci(~n - 2);< 196#$Ultimate##0 ~n := #in~n; 214#L17 assume !(~n < 1); 212#L19 assume !(1 == ~n); 195#L22 call #t~ret4 := fibonacci(~n - 1);< 196#$Ultimate##0 ~n := #in~n; 214#L17 assume !(~n < 1); 212#L19 assume !(1 == ~n); 195#L22 call #t~ret4 := fibonacci(~n - 1);< 196#$Ultimate##0 ~n := #in~n; 214#L17 assume !(~n < 1); 212#L19 assume 1 == ~n;#res := 1; 213#fibonacciFINAL assume true; 210#fibonacciEXIT >#29#return; 192#L22-1 call #t~ret5 := fibonacci(~n - 2);< 196#$Ultimate##0 ~n := #in~n; 214#L17 assume ~n < 1;#res := 0; 215#fibonacciFINAL assume true; 202#fibonacciEXIT >#31#return; 203#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 207#fibonacciFINAL assume true; 209#fibonacciEXIT >#29#return; 192#L22-1 [2022-12-13 19:41:09,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash 194852287, now seen corresponding path program 1 times [2022-12-13 19:41:09,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:09,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123514310] [2022-12-13 19:41:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:09,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:09,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:41:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:09,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:41:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1166275439, now seen corresponding path program 1 times [2022-12-13 19:41:09,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:09,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622727041] [2022-12-13 19:41:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:09,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:09,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:41:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:09,571 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:41:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1659578029, now seen corresponding path program 1 times [2022-12-13 19:41:09,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:09,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651502794] [2022-12-13 19:41:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:09,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:41:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:09,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 19:41:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:41:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:41:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 19:41:09,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:41:09,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651502794] [2022-12-13 19:41:09,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651502794] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:41:09,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146579486] [2022-12-13 19:41:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:09,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:09,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:09,680 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:41:09,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 19:41:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:09,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:41:09,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 19:41:09,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:41:09,821 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 19:41:09,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146579486] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:41:09,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:41:09,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-12-13 19:41:09,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220216195] [2022-12-13 19:41:09,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:41:09,976 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:41:09,976 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:41:09,976 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:41:09,976 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:41:09,976 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:41:09,976 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:09,976 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:41:09,976 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:41:09,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci05.c_Iteration3_Loop [2022-12-13 19:41:09,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:41:09,976 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:41:09,977 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:09,982 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:09,984 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:09,985 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:10,008 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:41:10,008 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:41:10,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:10,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:10,009 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:10,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 19:41:10,011 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:41:10,011 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:10,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-12-13 19:41:10,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:10,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:10,032 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:10,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 19:41:10,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:41:10,035 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:10,348 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:41:10,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 19:41:10,351 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:41:10,351 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:41:10,351 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:41:10,351 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:41:10,352 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:41:10,352 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:10,352 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:41:10,352 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:41:10,352 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci05.c_Iteration3_Loop [2022-12-13 19:41:10,352 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:41:10,352 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:41:10,352 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:10,354 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:10,355 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:10,357 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:10,381 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:41:10,382 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:41:10,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:10,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:10,383 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:10,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 19:41:10,385 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 [2022-12-13 19:41:10,395 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:41:10,395 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:41:10,395 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:41:10,395 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:41:10,395 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:41:10,395 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:41:10,396 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:41:10,397 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:41:10,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 19:41:10,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:10,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:10,401 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:10,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 19:41:10,403 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 [2022-12-13 19:41:10,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:41:10,413 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:41:10,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:41:10,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:41:10,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:41:10,414 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:41:10,414 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:41:10,415 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:41:10,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 19:41:10,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:10,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:10,419 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:10,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 19:41:10,421 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 [2022-12-13 19:41:10,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:41:10,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:41:10,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:41:10,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:41:10,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:41:10,432 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:41:10,432 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:41:10,433 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:41:10,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-12-13 19:41:10,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:10,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:10,437 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:10,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-12-13 19:41:10,439 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 [2022-12-13 19:41:10,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:41:10,449 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:41:10,450 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:41:10,450 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:41:10,450 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:41:10,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:41:10,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:41:10,454 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:41:10,457 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 19:41:10,457 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 19:41:10,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:10,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:10,458 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:10,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 19:41:10,460 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:41:10,460 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:41:10,461 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:41:10,461 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2022-12-13 19:41:10,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2022-12-13 19:41:10,464 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:41:10,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:10,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:41:10,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:10,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-12-13 19:41:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:10,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 19:41:10,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:10,671 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 19:41:10,672 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2022-12-13 19:41:10,672 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:41:10,834 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Result 159 states and 215 transitions. Complement of second has 48 states. [2022-12-13 19:41:10,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-12-13 19:41:10,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 7 states have internal predecessors, (23), 5 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 19:41:10,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 41 transitions. [2022-12-13 19:41:10,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 41 transitions. Stem has 12 letters. Loop has 22 letters. [2022-12-13 19:41:10,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:10,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 41 transitions. Stem has 34 letters. Loop has 22 letters. [2022-12-13 19:41:10,837 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:10,837 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 41 transitions. Stem has 12 letters. Loop has 44 letters. [2022-12-13 19:41:10,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:10,838 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 215 transitions. [2022-12-13 19:41:10,843 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-12-13 19:41:10,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 128 states and 180 transitions. [2022-12-13 19:41:10,847 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-12-13 19:41:10,848 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 79 [2022-12-13 19:41:10,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 180 transitions. [2022-12-13 19:41:10,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:41:10,848 INFO L218 hiAutomatonCegarLoop]: Abstraction has 128 states and 180 transitions. [2022-12-13 19:41:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states and 180 transitions. [2022-12-13 19:41:10,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 106. [2022-12-13 19:41:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 70 states have internal predecessors, (81), 25 states have call successors, (26), 13 states have call predecessors, (26), 15 states have return successors, (33), 22 states have call predecessors, (33), 23 states have call successors, (33) [2022-12-13 19:41:10,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 140 transitions. [2022-12-13 19:41:10,860 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 140 transitions. [2022-12-13 19:41:10,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:41:10,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 19:41:10,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:41:10,861 INFO L87 Difference]: Start difference. First operand 106 states and 140 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:41:10,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:41:10,920 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2022-12-13 19:41:10,920 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 57 transitions. [2022-12-13 19:41:10,921 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 19:41:10,922 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 41 states and 53 transitions. [2022-12-13 19:41:10,922 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2022-12-13 19:41:10,922 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2022-12-13 19:41:10,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 53 transitions. [2022-12-13 19:41:10,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:41:10,923 INFO L218 hiAutomatonCegarLoop]: Abstraction has 41 states and 53 transitions. [2022-12-13 19:41:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 53 transitions. [2022-12-13 19:41:10,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2022-12-13 19:41:10,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-13 19:41:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-12-13 19:41:10,926 INFO L240 hiAutomatonCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-12-13 19:41:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:41:10,927 INFO L428 stractBuchiCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-12-13 19:41:10,927 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 19:41:10,928 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 47 transitions. [2022-12-13 19:41:10,929 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 19:41:10,929 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:41:10,929 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:41:10,930 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:41:10,931 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-13 19:41:10,931 INFO L748 eck$LassoCheckResult]: Stem: 964#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 965#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 957#L29 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 966#$Ultimate##0 ~n := #in~n; 956#L17 assume !(~n < 1); 958#L19 assume !(1 == ~n); 960#L22 call #t~ret4 := fibonacci(~n - 1);< 961#$Ultimate##0 ~n := #in~n; 971#L17 assume !(~n < 1); 986#L19 assume !(1 == ~n); 967#L22 call #t~ret4 := fibonacci(~n - 1);< 961#$Ultimate##0 ~n := #in~n; 972#L17 assume !(~n < 1); 969#L19 assume 1 == ~n;#res := 1; 970#fibonacciFINAL assume true; 984#fibonacciEXIT >#29#return; 981#L22-1 call #t~ret5 := fibonacci(~n - 2);< 982#$Ultimate##0 ~n := #in~n; 985#L17 assume ~n < 1;#res := 0; 983#fibonacciFINAL assume true; 980#fibonacciEXIT >#31#return; 979#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 978#fibonacciFINAL assume true; 977#fibonacciEXIT >#29#return; 951#L22-1 [2022-12-13 19:41:10,931 INFO L750 eck$LassoCheckResult]: Loop: 951#L22-1 call #t~ret5 := fibonacci(~n - 2);< 959#$Ultimate##0 ~n := #in~n; 975#L17 assume !(~n < 1); 973#L19 assume !(1 == ~n); 952#L22 call #t~ret4 := fibonacci(~n - 1);< 959#$Ultimate##0 ~n := #in~n; 975#L17 assume !(~n < 1); 973#L19 assume !(1 == ~n); 952#L22 call #t~ret4 := fibonacci(~n - 1);< 959#$Ultimate##0 ~n := #in~n; 975#L17 assume !(~n < 1); 973#L19 assume 1 == ~n;#res := 1; 974#fibonacciFINAL assume true; 987#fibonacciEXIT >#29#return; 950#L22-1 call #t~ret5 := fibonacci(~n - 2);< 953#$Ultimate##0 ~n := #in~n; 954#L17 assume ~n < 1;#res := 0; 955#fibonacciFINAL assume true; 962#fibonacciEXIT >#31#return; 963#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 968#fibonacciFINAL assume true; 976#fibonacciEXIT >#29#return; 951#L22-1 [2022-12-13 19:41:10,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:10,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1316333425, now seen corresponding path program 2 times [2022-12-13 19:41:10,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:10,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205028696] [2022-12-13 19:41:10,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:10,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:10,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:41:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:10,949 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:41:10,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1166275439, now seen corresponding path program 2 times [2022-12-13 19:41:10,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:10,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666139362] [2022-12-13 19:41:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:10,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:41:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:10,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:41:10,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:10,962 INFO L85 PathProgramCache]: Analyzing trace with hash 129977725, now seen corresponding path program 3 times [2022-12-13 19:41:10,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:10,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244817288] [2022-12-13 19:41:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:10,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:11,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:41:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:11,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:41:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:11,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:41:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 19:41:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:11,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:41:11,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:11,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:41:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 16 proven. 46 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-13 19:41:11,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:41:11,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244817288] [2022-12-13 19:41:11,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244817288] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:41:11,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373297028] [2022-12-13 19:41:11,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:41:11,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:11,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:11,112 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:41:11,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 19:41:11,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-13 19:41:11,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:41:11,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:41:11,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 47 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-13 19:41:11,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:41:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 35 proven. 49 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 19:41:11,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373297028] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:41:11,463 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:41:11,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 21 [2022-12-13 19:41:11,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672931121] [2022-12-13 19:41:11,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:41:11,630 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:41:11,630 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:41:11,630 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:41:11,630 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:41:11,630 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:41:11,630 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:11,630 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:41:11,630 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:41:11,630 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci05.c_Iteration4_Loop [2022-12-13 19:41:11,630 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:41:11,630 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:41:11,631 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:11,637 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:11,638 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:11,640 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:11,676 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:41:11,676 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:41:11,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:11,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:11,677 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:11,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 19:41:11,679 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:41:11,679 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:11,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-12-13 19:41:11,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:11,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:11,700 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:11,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 19:41:11,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:41:11,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:11,975 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:41:11,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-12-13 19:41:11,978 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:41:11,979 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:41:11,979 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:41:11,979 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:41:11,979 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:41:11,979 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:11,979 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:41:11,979 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:41:11,979 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci05.c_Iteration4_Loop [2022-12-13 19:41:11,979 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:41:11,979 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:41:11,979 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:11,986 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:11,987 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:11,988 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:12,019 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:41:12,020 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:41:12,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:12,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:12,021 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:12,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 19:41:12,023 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 19:41:12,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:41:12,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:41:12,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:41:12,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:41:12,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:41:12,035 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:41:12,035 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:41:12,037 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:41:12,040 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 19:41:12,040 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 19:41:12,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:12,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:12,041 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:12,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 19:41:12,043 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:41:12,043 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:41:12,043 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:41:12,043 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2022-12-13 19:41:12,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-12-13 19:41:12,047 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:41:12,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:12,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:41:12,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:12,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-12-13 19:41:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:12,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 19:41:12,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:12,314 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 19:41:12,314 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2022-12-13 19:41:12,314 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 19:41:12,375 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 45 states and 54 transitions. Complement of second has 11 states. [2022-12-13 19:41:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-12-13 19:41:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 19:41:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2022-12-13 19:41:12,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 24 letters. Loop has 22 letters. [2022-12-13 19:41:12,377 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:12,377 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 19:41:12,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:12,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:41:12,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:12,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 19:41:12,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 19:41:12,640 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2022-12-13 19:41:12,640 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 19:41:12,697 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 45 states and 54 transitions. Complement of second has 11 states. [2022-12-13 19:41:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-12-13 19:41:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 19:41:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2022-12-13 19:41:12,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 24 letters. Loop has 22 letters. [2022-12-13 19:41:12,699 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:12,699 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 19:41:12,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:12,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 19:41:12,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:12,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 19:41:12,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 19:41:12,934 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2022-12-13 19:41:12,935 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 19:41:13,084 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 47 transitions. cyclomatic complexity: 11. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 344 states and 443 transitions. Complement of second has 125 states. [2022-12-13 19:41:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-12-13 19:41:13,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 19:41:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 46 transitions. [2022-12-13 19:41:13,086 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 24 letters. Loop has 22 letters. [2022-12-13 19:41:13,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:13,087 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 46 letters. Loop has 22 letters. [2022-12-13 19:41:13,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:13,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 24 letters. Loop has 44 letters. [2022-12-13 19:41:13,090 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:13,090 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 344 states and 443 transitions. [2022-12-13 19:41:13,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2022-12-13 19:41:13,101 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 344 states to 219 states and 296 transitions. [2022-12-13 19:41:13,101 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 98 [2022-12-13 19:41:13,101 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 115 [2022-12-13 19:41:13,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 296 transitions. [2022-12-13 19:41:13,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:41:13,102 INFO L218 hiAutomatonCegarLoop]: Abstraction has 219 states and 296 transitions. [2022-12-13 19:41:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states and 296 transitions. [2022-12-13 19:41:13,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 171. [2022-12-13 19:41:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 106 states have (on average 1.1415094339622642) internal successors, (121), 111 states have internal predecessors, (121), 38 states have call successors, (42), 23 states have call predecessors, (42), 27 states have return successors, (59), 36 states have call predecessors, (59), 36 states have call successors, (59) [2022-12-13 19:41:13,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 222 transitions. [2022-12-13 19:41:13,118 INFO L240 hiAutomatonCegarLoop]: Abstraction has 171 states and 222 transitions. [2022-12-13 19:41:13,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:41:13,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 19:41:13,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-12-13 19:41:13,119 INFO L87 Difference]: Start difference. First operand 171 states and 222 transitions. Second operand has 21 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 18 states have internal predecessors, (49), 13 states have call successors, (17), 3 states have call predecessors, (17), 7 states have return successors, (16), 10 states have call predecessors, (16), 11 states have call successors, (16) [2022-12-13 19:41:13,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:41:13,309 INFO L93 Difference]: Finished difference Result 348 states and 502 transitions. [2022-12-13 19:41:13,309 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 348 states and 502 transitions. [2022-12-13 19:41:13,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2022-12-13 19:41:13,321 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 348 states to 338 states and 489 transitions. [2022-12-13 19:41:13,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 172 [2022-12-13 19:41:13,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 192 [2022-12-13 19:41:13,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 338 states and 489 transitions. [2022-12-13 19:41:13,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:41:13,323 INFO L218 hiAutomatonCegarLoop]: Abstraction has 338 states and 489 transitions. [2022-12-13 19:41:13,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states and 489 transitions. [2022-12-13 19:41:13,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 273. [2022-12-13 19:41:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 170 states have (on average 1.1294117647058823) internal successors, (192), 173 states have internal predecessors, (192), 60 states have call successors, (72), 36 states have call predecessors, (72), 43 states have return successors, (136), 63 states have call predecessors, (136), 58 states have call successors, (136) [2022-12-13 19:41:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 400 transitions. [2022-12-13 19:41:13,348 INFO L240 hiAutomatonCegarLoop]: Abstraction has 273 states and 400 transitions. [2022-12-13 19:41:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 19:41:13,349 INFO L428 stractBuchiCegarLoop]: Abstraction has 273 states and 400 transitions. [2022-12-13 19:41:13,349 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 19:41:13,350 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 273 states and 400 transitions. [2022-12-13 19:41:13,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2022-12-13 19:41:13,352 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 19:41:13,352 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 19:41:13,353 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 9, 7, 7, 5, 5, 4, 4, 3, 2, 1, 1, 1] [2022-12-13 19:41:13,354 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 19:41:13,354 INFO L748 eck$LassoCheckResult]: Stem: 2946#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 2947#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet6#1, main_#t~ret7#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1; 2948#L29 call main_#t~ret7#1 := fibonacci(main_~x~0#1);< 2949#$Ultimate##0 ~n := #in~n; 2989#L17 assume !(~n < 1); 2987#L19 assume !(1 == ~n); 2980#L22 call #t~ret4 := fibonacci(~n - 1);< 2982#$Ultimate##0 ~n := #in~n; 2988#L17 assume !(~n < 1); 2986#L19 assume !(1 == ~n); 2979#L22 call #t~ret4 := fibonacci(~n - 1);< 2982#$Ultimate##0 ~n := #in~n; 2988#L17 assume !(~n < 1); 2986#L19 assume !(1 == ~n); 2979#L22 call #t~ret4 := fibonacci(~n - 1);< 2982#$Ultimate##0 ~n := #in~n; 2988#L17 assume !(~n < 1); 2986#L19 assume !(1 == ~n); 2979#L22 call #t~ret4 := fibonacci(~n - 1);< 2982#$Ultimate##0 ~n := #in~n; 2990#L17 assume !(~n < 1); 3070#L19 assume 1 == ~n;#res := 1; 3063#fibonacciFINAL assume true; 3058#fibonacciEXIT >#29#return; 3053#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3054#$Ultimate##0 ~n := #in~n; 3084#L17 assume ~n < 1;#res := 0; 3082#fibonacciFINAL assume true; 3052#fibonacciEXIT >#31#return; 3050#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3049#fibonacciFINAL assume true; 3035#fibonacciEXIT >#29#return; 3011#L22-1 call #t~ret5 := fibonacci(~n - 2);< 3013#$Ultimate##0 ~n := #in~n; 3029#L17 assume !(~n < 1); 3026#L19 assume 1 == ~n;#res := 1; 2967#fibonacciFINAL assume true; 3010#fibonacciEXIT >#31#return; 3007#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3003#fibonacciFINAL assume true; 2991#fibonacciEXIT >#29#return; 2992#L22-1 call #t~ret5 := fibonacci(~n - 2);< 2997#$Ultimate##0 ~n := #in~n; 3030#L17 assume !(~n < 1); 3027#L19 assume !(1 == ~n); 3028#L22 call #t~ret4 := fibonacci(~n - 1);< 3189#$Ultimate##0 ~n := #in~n; 3137#L17 assume !(~n < 1); 3138#L19 assume 1 == ~n;#res := 1; 3190#fibonacciFINAL assume true; 3187#fibonacciEXIT >#29#return; 2958#L22-1 call #t~ret5 := fibonacci(~n - 2);< 2957#$Ultimate##0 ~n := #in~n; 2960#L17 assume ~n < 1;#res := 0; 3025#fibonacciFINAL assume true; 3017#fibonacciEXIT >#31#return; 3015#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3005#fibonacciFINAL assume true; 2995#fibonacciEXIT >#31#return; 2981#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2984#fibonacciFINAL assume true; 2978#fibonacciEXIT >#29#return; 2966#L22-1 call #t~ret5 := fibonacci(~n - 2);< 2974#$Ultimate##0 ~n := #in~n; 2970#L17 assume !(~n < 1); 2964#L19 assume !(1 == ~n); 2969#L22 call #t~ret4 := fibonacci(~n - 1);< 3188#$Ultimate##0 ~n := #in~n; 3164#L17 assume !(~n < 1); 3165#L19 assume !(1 == ~n); 3145#L22 call #t~ret4 := fibonacci(~n - 1);< 3150#$Ultimate##0 [2022-12-13 19:41:13,354 INFO L750 eck$LassoCheckResult]: Loop: 3150#$Ultimate##0 ~n := #in~n; 3162#L17 assume !(~n < 1); 3160#L19 assume !(1 == ~n); 3146#L22 call #t~ret4 := fibonacci(~n - 1);< 3150#$Ultimate##0 [2022-12-13 19:41:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:13,355 INFO L85 PathProgramCache]: Analyzing trace with hash -709733409, now seen corresponding path program 4 times [2022-12-13 19:41:13,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:13,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707611105] [2022-12-13 19:41:13,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:13,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:13,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:41:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:13,377 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:41:13,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:13,377 INFO L85 PathProgramCache]: Analyzing trace with hash 927641, now seen corresponding path program 2 times [2022-12-13 19:41:13,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:13,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063374167] [2022-12-13 19:41:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:13,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:13,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:41:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:41:13,382 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:41:13,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:13,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1251433591, now seen corresponding path program 5 times [2022-12-13 19:41:13,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:13,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119776677] [2022-12-13 19:41:13,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:13,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 19:41:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:13,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:41:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:41:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:13,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:41:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:13,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:41:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:13,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 19:41:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:13,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 19:41:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 19:41:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:13,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 19:41:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 110 proven. 115 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-13 19:41:13,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:41:13,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119776677] [2022-12-13 19:41:13,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119776677] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:41:13,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631125689] [2022-12-13 19:41:13,694 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 19:41:13,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:13,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:13,695 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:41:13,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 19:41:13,741 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-12-13 19:41:13,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:41:13,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 19:41:13,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 115 proven. 109 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-12-13 19:41:13,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:41:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 115 proven. 121 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-13 19:41:14,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631125689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:41:14,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:41:14,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 16] total 21 [2022-12-13 19:41:14,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413316690] [2022-12-13 19:41:14,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:41:14,215 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:41:14,215 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:41:14,215 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:41:14,215 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:41:14,215 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 19:41:14,215 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:14,215 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:41:14,215 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:41:14,215 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci05.c_Iteration5_Loop [2022-12-13 19:41:14,215 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:41:14,215 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:41:14,216 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:14,218 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:14,219 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:14,224 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:14,225 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:14,247 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:41:14,247 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 19:41:14,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:14,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:14,248 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:14,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-12-13 19:41:14,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:41:14,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:14,263 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:41:14,263 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#t~ret4=0} Honda state: {fibonacci_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 19:41:14,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-12-13 19:41:14,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:14,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:14,267 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:14,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-12-13 19:41:14,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:41:14,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:14,280 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 19:41:14,281 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibonacci_#res=0} Honda state: {fibonacci_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 19:41:14,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-12-13 19:41:14,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:14,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:14,284 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:14,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-12-13 19:41:14,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 19:41:14,286 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:14,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-12-13 19:41:14,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:14,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:14,301 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:14,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-12-13 19:41:14,303 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 19:41:14,303 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 19:41:14,325 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 19:41:14,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-12-13 19:41:14,328 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 19:41:14,328 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 19:41:14,328 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 19:41:14,328 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 19:41:14,328 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 19:41:14,328 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:14,328 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 19:41:14,328 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 19:41:14,328 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci05.c_Iteration5_Loop [2022-12-13 19:41:14,328 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 19:41:14,328 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 19:41:14,329 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:14,331 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:14,332 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:14,336 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:14,338 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 19:41:14,358 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 19:41:14,358 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 19:41:14,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:14,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:14,359 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:14,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-12-13 19:41:14,361 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 [2022-12-13 19:41:14,371 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:41:14,371 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:41:14,371 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:41:14,371 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:41:14,371 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:41:14,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:41:14,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:41:14,373 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:41:14,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-12-13 19:41:14,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:14,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:14,376 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:14,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-12-13 19:41:14,378 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 [2022-12-13 19:41:14,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:41:14,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:41:14,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:41:14,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:41:14,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:41:14,390 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:41:14,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:41:14,391 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 19:41:14,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-12-13 19:41:14,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:14,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:14,395 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:14,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-12-13 19:41:14,397 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 19:41:14,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 19:41:14,407 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 19:41:14,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 19:41:14,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 19:41:14,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 19:41:14,407 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 19:41:14,407 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 19:41:14,410 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 19:41:14,411 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 19:41:14,411 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 19:41:14,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 19:41:14,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:14,413 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 19:41:14,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-12-13 19:41:14,414 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 19:41:14,415 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 19:41:14,415 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 19:41:14,415 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2022-12-13 19:41:14,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-12-13 19:41:14,418 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 19:41:14,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:14,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 19:41:14,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:14,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2022-12-13 19:41:14,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:14,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:41:14,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:41:14,852 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-12-13 19:41:14,852 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 273 states and 400 transitions. cyclomatic complexity: 131 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 19:41:14,890 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 273 states and 400 transitions. cyclomatic complexity: 131. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 295 states and 426 transitions. Complement of second has 13 states. [2022-12-13 19:41:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 19:41:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 19:41:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-12-13 19:41:14,892 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 71 letters. Loop has 4 letters. [2022-12-13 19:41:14,892 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:14,892 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 19:41:14,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:14,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 19:41:14,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:15,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:41:15,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:15,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:41:15,286 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-12-13 19:41:15,287 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 273 states and 400 transitions. cyclomatic complexity: 131 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 19:41:15,322 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 273 states and 400 transitions. cyclomatic complexity: 131. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 295 states and 426 transitions. Complement of second has 13 states. [2022-12-13 19:41:15,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 19:41:15,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 19:41:15,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-12-13 19:41:15,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 71 letters. Loop has 4 letters. [2022-12-13 19:41:15,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:15,323 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 19:41:15,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:15,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 19:41:15,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:15,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:41:15,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:41:15,649 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 3 loop predicates [2022-12-13 19:41:15,649 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 273 states and 400 transitions. cyclomatic complexity: 131 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 19:41:15,694 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 273 states and 400 transitions. cyclomatic complexity: 131. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 348 states and 483 transitions. Complement of second has 14 states. [2022-12-13 19:41:15,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-12-13 19:41:15,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 19:41:15,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-12-13 19:41:15,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 71 letters. Loop has 4 letters. [2022-12-13 19:41:15,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:15,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 75 letters. Loop has 4 letters. [2022-12-13 19:41:15,696 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:15,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 71 letters. Loop has 8 letters. [2022-12-13 19:41:15,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 19:41:15,697 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 348 states and 483 transitions. [2022-12-13 19:41:15,701 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2022-12-13 19:41:15,705 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 348 states to 287 states and 416 transitions. [2022-12-13 19:41:15,705 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 137 [2022-12-13 19:41:15,706 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 142 [2022-12-13 19:41:15,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 287 states and 416 transitions. [2022-12-13 19:41:15,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 19:41:15,706 INFO L218 hiAutomatonCegarLoop]: Abstraction has 287 states and 416 transitions. [2022-12-13 19:41:15,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states and 416 transitions. [2022-12-13 19:41:15,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 279. [2022-12-13 19:41:15,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 175 states have (on average 1.1257142857142857) internal successors, (197), 178 states have internal predecessors, (197), 61 states have call successors, (73), 37 states have call predecessors, (73), 43 states have return successors, (138), 63 states have call predecessors, (138), 59 states have call successors, (138) [2022-12-13 19:41:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 408 transitions. [2022-12-13 19:41:15,720 INFO L240 hiAutomatonCegarLoop]: Abstraction has 279 states and 408 transitions. [2022-12-13 19:41:15,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:41:15,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 19:41:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2022-12-13 19:41:15,721 INFO L87 Difference]: Start difference. First operand 279 states and 408 transitions. Second operand has 21 states, 16 states have (on average 2.8125) internal successors, (45), 17 states have internal predecessors, (45), 15 states have call successors, (19), 5 states have call predecessors, (19), 6 states have return successors, (19), 10 states have call predecessors, (19), 11 states have call successors, (19) [2022-12-13 19:41:15,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:41:15,873 INFO L93 Difference]: Finished difference Result 407 states and 600 transitions. [2022-12-13 19:41:15,873 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 407 states and 600 transitions. [2022-12-13 19:41:15,878 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 19:41:15,878 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 407 states to 0 states and 0 transitions. [2022-12-13 19:41:15,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 19:41:15,879 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 19:41:15,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 19:41:15,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:41:15,879 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 19:41:15,879 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 19:41:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:41:15,880 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 19:41:15,880 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 19:41:15,880 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 19:41:15,880 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 19:41:15,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 19:41:15,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 07:41:15 BoogieIcfgContainer [2022-12-13 19:41:15,887 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 19:41:15,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:41:15,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:41:15,888 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:41:15,888 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:41:08" (3/4) ... [2022-12-13 19:41:15,891 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:41:15,891 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:41:15,891 INFO L158 Benchmark]: Toolchain (without parser) took 7975.45ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 88.3MB in the beginning and 98.6MB in the end (delta: -10.4MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-12-13 19:41:15,892 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 88.1MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:41:15,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 142.24ms. Allocated memory is still 123.7MB. Free memory was 87.9MB in the beginning and 78.2MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 19:41:15,892 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.46ms. Allocated memory is still 123.7MB. Free memory was 78.2MB in the beginning and 76.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:41:15,893 INFO L158 Benchmark]: Boogie Preprocessor took 11.51ms. Allocated memory is still 123.7MB. Free memory was 76.7MB in the beginning and 75.8MB in the end (delta: 933.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:41:15,893 INFO L158 Benchmark]: RCFGBuilder took 185.87ms. Allocated memory is still 123.7MB. Free memory was 75.8MB in the beginning and 66.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 19:41:15,893 INFO L158 Benchmark]: BuchiAutomizer took 7608.08ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 66.6MB in the beginning and 98.6MB in the end (delta: -32.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:41:15,893 INFO L158 Benchmark]: Witness Printer took 3.40ms. Allocated memory is still 148.9MB. Free memory is still 98.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:41:15,895 INFO L339 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 88.1MB. Free memory is still 40.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 142.24ms. Allocated memory is still 123.7MB. Free memory was 87.9MB in the beginning and 78.2MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.46ms. Allocated memory is still 123.7MB. Free memory was 78.2MB in the beginning and 76.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.51ms. Allocated memory is still 123.7MB. Free memory was 76.7MB in the beginning and 75.8MB in the end (delta: 933.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 185.87ms. Allocated memory is still 123.7MB. Free memory was 75.8MB in the beginning and 66.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 7608.08ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 66.6MB in the beginning and 98.6MB in the end (delta: -32.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.40ms. Allocated memory is still 148.9MB. Free memory is still 98.6MB. 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 8 terminating modules (4 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 4 modules have a trivial ranking function, the largest among these consists of 21 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.5s and 6 iterations. TraceHistogramMax:12. Analysis of lassos took 3.9s. Construction of modules took 0.4s. Büchi inclusion checks took 2.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 7. Automata minimization 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 151 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 16/46 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 457 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 429 mSDsluCounter, 338 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 197 mSDsCounter, 340 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 714 IncrementalHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 340 mSolverCounterUnsat, 141 mSDtfsCounter, 714 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf93 smp77 dnf100 smp100 tf110 neg96 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-12-13 19:41:15,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 19:41:16,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 19:41:16,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 19:41:16,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ff4dae4b-a8eb-47c2-9d2d-ea85099a0061/bin/uautomizer-uyxdKDjOR8/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