./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/Fibonacci02.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_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/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_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/Fibonacci02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/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_35fa5d2a-971a-4352-a63a-e89445e7fa78/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 b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 --- 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 14:29:39,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:29:39,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:29:39,487 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:29:39,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:29:39,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:29:39,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:29:39,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:29:39,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:29:39,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:29:39,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:29:39,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:29:39,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:29:39,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:29:39,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:29:39,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:29:39,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:29:39,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:29:39,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:29:39,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:29:39,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:29:39,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:29:39,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:29:39,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:29:39,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:29:39,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:29:39,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:29:39,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:29:39,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:29:39,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:29:39,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:29:39,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:29:39,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:29:39,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:29:39,516 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:29:39,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:29:39,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:29:39,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:29:39,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:29:39,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:29:39,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:29:39,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-12-13 14:29:39,533 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:29:39,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:29:39,534 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:29:39,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:29:39,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:29:39,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:29:39,540 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:29:39,540 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 14:29:39,541 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 14:29:39,541 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 14:29:39,541 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 14:29:39,541 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 14:29:39,541 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 14:29:39,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:29:39,542 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:29:39,542 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:29:39,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:29:39,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:29:39,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:29:39,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 14:29:39,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 14:29:39,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 14:29:39,543 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:29:39,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:29:39,543 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 14:29:39,543 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:29:39,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 14:29:39,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:29:39,544 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:29:39,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:29:39,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:29:39,545 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 14:29:39,545 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_35fa5d2a-971a-4352-a63a-e89445e7fa78/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7261cadd839cd02322bb28945f92ad1bd2170c0a65dd385996b5ff81cbb1de7 [2022-12-13 14:29:39,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:29:39,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:29:39,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:29:39,734 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:29:39,734 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:29:39,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive/Fibonacci02.c [2022-12-13 14:29:42,350 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:29:42,461 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:29:42,461 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/sv-benchmarks/c/recursive/Fibonacci02.c [2022-12-13 14:29:42,466 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/data/3ba791e26/cacde05ea1064726b6ba72b901ef0c1b/FLAG2e3b05996 [2022-12-13 14:29:42,476 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/data/3ba791e26/cacde05ea1064726b6ba72b901ef0c1b [2022-12-13 14:29:42,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:29:42,479 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:29:42,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:29:42,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:29:42,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:29:42,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48fc97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42, skipping insertion in model container [2022-12-13 14:29:42,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:29:42,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:29:42,596 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_35fa5d2a-971a-4352-a63a-e89445e7fa78/sv-benchmarks/c/recursive/Fibonacci02.c[715,728] [2022-12-13 14:29:42,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:29:42,607 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:29:42,617 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_35fa5d2a-971a-4352-a63a-e89445e7fa78/sv-benchmarks/c/recursive/Fibonacci02.c[715,728] [2022-12-13 14:29:42,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:29:42,628 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:29:42,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42 WrapperNode [2022-12-13 14:29:42,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:29:42,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:29:42,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:29:42,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:29:42,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,652 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-12-13 14:29:42,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:29:42,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:29:42,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:29:42,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:29:42,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,664 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:29:42,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:29:42,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:29:42,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:29:42,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42" (1/1) ... [2022-12-13 14:29:42,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:42,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:42,696 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:42,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 14:29:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2022-12-13 14:29:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2022-12-13 14:29:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:29:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:29:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:29:42,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:29:42,780 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:29:42,782 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:29:42,838 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:29:42,843 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:29:42,843 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 14:29:42,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:29:42 BoogieIcfgContainer [2022-12-13 14:29:42,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:29:42,845 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 14:29:42,845 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 14:29:42,848 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 14:29:42,848 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 14:29:42,848 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 02:29:42" (1/3) ... [2022-12-13 14:29:42,849 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3453f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 02:29:42, skipping insertion in model container [2022-12-13 14:29:42,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 14:29:42,849 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:42" (2/3) ... [2022-12-13 14:29:42,849 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3453f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 02:29:42, skipping insertion in model container [2022-12-13 14:29:42,849 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 14:29:42,849 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:29:42" (3/3) ... [2022-12-13 14:29:42,850 INFO L332 chiAutomizerObserver]: Analyzing ICFG Fibonacci02.c [2022-12-13 14:29:42,887 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 14:29:42,887 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 14:29:42,887 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 14:29:42,888 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 14:29:42,888 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 14:29:42,888 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 14:29:42,888 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 14:29:42,888 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 14:29:42,891 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 14:29:42,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 14:29:42,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 14:29:42,905 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 14:29:42,910 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 14:29:42,910 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 14:29:42,910 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 14:29:42,910 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 14:29:42,912 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 14:29:42,912 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 14:29:42,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 14:29:42,912 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 14:29:42,912 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-12-13 14:29:42,917 INFO L748 eck$LassoCheckResult]: Stem: 16#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 8#L29true call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 13#$Ultimate##0true [2022-12-13 14:29:42,918 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 14:29:42,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:42,921 INFO L85 PathProgramCache]: Analyzing trace with hash 42781, now seen corresponding path program 1 times [2022-12-13 14:29:42,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:42,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543404932] [2022-12-13 14:29:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:42,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:29:42,987 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:29:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:29:43,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:29:43,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:43,009 INFO L85 PathProgramCache]: Analyzing trace with hash 927641, now seen corresponding path program 1 times [2022-12-13 14:29:43,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:43,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322664883] [2022-12-13 14:29:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:43,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:43,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:29:43,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:29:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:29:43,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:29:43,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:43,019 INFO L85 PathProgramCache]: Analyzing trace with hash 854450357, now seen corresponding path program 1 times [2022-12-13 14:29:43,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:43,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603797374] [2022-12-13 14:29:43,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:43,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:29:43,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:29:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:29:43,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:29:43,132 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 14:29:43,132 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 14:29:43,132 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 14:29:43,132 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 14:29:43,133 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 14:29:43,133 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:43,133 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 14:29:43,133 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 14:29:43,133 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration1_Loop [2022-12-13 14:29:43,133 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 14:29:43,133 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 14:29:43,144 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 14:29:43,152 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 14:29:43,155 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 14:29:43,157 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 14:29:43,165 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 14:29:43,214 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 14:29:43,214 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 14:29:43,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:43,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:43,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:43,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 14:29:43,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 14:29:43,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 14:29:43,235 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 14:29:43,235 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 14:29:43,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:29:43,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:43,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:43,240 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:43,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 14:29:43,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 14:29:43,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 14:29:43,254 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 14:29:43,255 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 14:29:43,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-12-13 14:29:43,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:43,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:43,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:43,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 14:29:43,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 14:29:43,261 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 14:29:43,273 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 14:29:43,273 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 14:29:43,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 14:29:43,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:43,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:43,277 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:43,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 14:29:43,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 14:29:43,279 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 14:29:43,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-12-13 14:29:43,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:43,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:43,295 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:43,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 14:29:43,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 14:29:43,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 14:29:43,357 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 14:29:43,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 14:29:43,360 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 14:29:43,360 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 14:29:43,360 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 14:29:43,360 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 14:29:43,361 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 14:29:43,361 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:43,361 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 14:29:43,361 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 14:29:43,361 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration1_Loop [2022-12-13 14:29:43,361 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 14:29:43,361 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 14:29:43,363 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 14:29:43,365 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 14:29:43,368 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 14:29:43,370 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 14:29:43,378 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 14:29:43,415 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 14:29:43,419 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 14:29:43,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:43,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:43,421 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:43,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 14:29:43,423 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 14:29:43,433 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 14:29:43,434 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 14:29:43,434 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 14:29:43,434 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 14:29:43,434 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 14:29:43,436 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 14:29:43,436 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 14:29:43,438 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 14:29:43,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 14:29:43,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:43,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:43,442 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:43,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 14:29:43,444 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 14:29:43,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 14:29:43,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 14:29:43,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 14:29:43,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 14:29:43,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 14:29:43,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 14:29:43,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 14:29:43,457 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 14:29:43,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-12-13 14:29:43,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:43,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:43,461 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:43,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 14:29:43,463 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 14:29:43,473 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 14:29:43,473 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 14:29:43,473 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 14:29:43,473 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 14:29:43,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 14:29:43,474 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 14:29:43,474 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 14:29:43,476 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 14:29:43,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-12-13 14:29:43,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:43,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:43,480 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:43,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 14:29:43,482 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 14:29:43,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 14:29:43,493 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 14:29:43,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 14:29:43,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 14:29:43,493 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 14:29:43,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 14:29:43,495 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 14:29:43,497 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 14:29:43,501 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 14:29:43,501 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 14:29:43,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:43,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:43,545 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:43,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 14:29:43,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 14:29:43,547 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 14:29:43,547 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 14:29:43,548 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_#in~n) = 1*fibonacci_#in~n Supporting invariants [] [2022-12-13 14:29:43,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-12-13 14:29:43,555 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 14:29:43,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:43,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:29:43,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:43,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:29:43,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:43,661 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 14:29:43,691 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 14:29:43,692 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 14:29:43,770 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 14:29:43,772 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 14:29:43,776 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 14:29:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-12-13 14:29:43,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-12-13 14:29:43,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 14:29:43,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-12-13 14:29:43,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 14:29:43,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-12-13 14:29:43,780 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 14:29:43,781 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2022-12-13 14:29:43,784 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 14:29:43,788 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 25 states and 34 transitions. [2022-12-13 14:29:43,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-12-13 14:29:43,790 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-12-13 14:29:43,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-12-13 14:29:43,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 14:29:43,790 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-12-13 14:29:43,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-12-13 14:29:43,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-12-13 14:29:43,810 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 14:29:43,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-12-13 14:29:43,811 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-12-13 14:29:43,811 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-12-13 14:29:43,812 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 14:29:43,812 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-12-13 14:29:43,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 14:29:43,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 14:29:43,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 14:29:43,813 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:43,813 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:43,814 INFO L748 eck$LassoCheckResult]: Stem: 131#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 132#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 120#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 133#$Ultimate##0 ~n := #in~n; 127#L17 assume !(~n < 1); 128#L19 assume !(1 == ~n); 122#L22 call #t~ret4 := fibonacci(~n - 1);< 129#$Ultimate##0 ~n := #in~n; 124#L17 assume ~n < 1;#res := 0; 125#fibonacciFINAL assume true; 130#fibonacciEXIT >#29#return; 119#L22-1 [2022-12-13 14:29:43,814 INFO L750 eck$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 14:29:43,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:43,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1391758089, now seen corresponding path program 1 times [2022-12-13 14:29:43,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:43,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463529700] [2022-12-13 14:29:43,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:43,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:43,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:43,927 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 14:29:43,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:43,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463529700] [2022-12-13 14:29:43,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463529700] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:43,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:43,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:29:43,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141171909] [2022-12-13 14:29:43,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:43,930 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 14:29:43,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:43,931 INFO L85 PathProgramCache]: Analyzing trace with hash 924369961, now seen corresponding path program 1 times [2022-12-13 14:29:43,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:43,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734110859] [2022-12-13 14:29:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:43,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:43,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:29:43,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:43,991 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 14:29:43,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:43,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734110859] [2022-12-13 14:29:43,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734110859] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:43,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:43,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:29:43,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946839464] [2022-12-13 14:29:43,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:43,992 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 14:29:43,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:43,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:29:43,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:29:43,996 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 14:29:44,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-12-13 14:29:44,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:44,049 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-12-13 14:29:44,049 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-12-13 14:29:44,050 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 14:29:44,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-12-13 14:29:44,051 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-12-13 14:29:44,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-12-13 14:29:44,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-12-13 14:29:44,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 14:29:44,052 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-12-13 14:29:44,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-12-13 14:29:44,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-13 14:29:44,054 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 14:29:44,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-12-13 14:29:44,055 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-12-13 14:29:44,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:29:44,056 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-12-13 14:29:44,056 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 14:29:44,056 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-12-13 14:29:44,057 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-12-13 14:29:44,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 14:29:44,057 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 14:29:44,058 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:44,058 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-13 14:29:44,058 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~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 193#L29 call main_#t~ret6#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 14:29:44,059 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 14:29:44,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:44,059 INFO L85 PathProgramCache]: Analyzing trace with hash 194852287, now seen corresponding path program 1 times [2022-12-13 14:29:44,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:44,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581739173] [2022-12-13 14:29:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:44,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:44,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:29:44,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:44,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581739173] [2022-12-13 14:29:44,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581739173] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:29:44,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998120552] [2022-12-13 14:29:44,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:44,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:44,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:44,129 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:29:44,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 14:29:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:44,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:29:44,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:29:44,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:29:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:29:44,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998120552] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:29:44,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:29:44,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-12-13 14:29:44,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428945545] [2022-12-13 14:29:44,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:29:44,254 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 14:29:44,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:44,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1166275439, now seen corresponding path program 1 times [2022-12-13 14:29:44,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:44,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710237217] [2022-12-13 14:29:44,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:44,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:29:44,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:29:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:29:44,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:29:44,420 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 14:29:44,420 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 14:29:44,420 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 14:29:44,420 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 14:29:44,420 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 14:29:44,420 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:44,420 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 14:29:44,420 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 14:29:44,420 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration3_Loop [2022-12-13 14:29:44,420 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 14:29:44,421 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 14:29:44,421 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 14:29:44,426 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 14:29:44,427 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 14:29:44,429 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 14:29:44,453 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 14:29:44,453 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 14:29:44,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:44,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:44,454 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:44,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 14:29:44,457 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 14:29:44,457 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 14:29:44,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-12-13 14:29:44,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:44,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:44,478 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:44,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 14:29:44,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 14:29:44,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 14:29:44,753 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 14:29:44,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 14:29:44,756 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 14:29:44,757 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 14:29:44,757 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 14:29:44,757 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 14:29:44,757 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 14:29:44,757 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:44,757 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 14:29:44,757 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 14:29:44,757 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration3_Loop [2022-12-13 14:29:44,757 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 14:29:44,757 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 14:29:44,758 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 14:29:44,761 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 14:29:44,763 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 14:29:44,764 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 14:29:44,785 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 14:29:44,786 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 14:29:44,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:44,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:44,786 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:44,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 14:29:44,789 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 14:29:44,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 14:29:44,799 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 14:29:44,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 14:29:44,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 14:29:44,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 14:29:44,801 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 14:29:44,801 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 14:29:44,803 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 14:29:44,806 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 14:29:44,806 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 14:29:44,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:44,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:44,807 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:44,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 14:29:44,809 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 14:29:44,810 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 14:29:44,810 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 14:29:44,810 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2022-12-13 14:29:44,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 14:29:44,813 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 14:29:44,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:44,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:29:44,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:44,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 14:29:44,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 14:29:44,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:45,004 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 14:29:45,005 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 14:29:45,005 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 14:29:45,177 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 14:29:45,178 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 14:29:45,178 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 14:29:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 41 transitions. [2022-12-13 14:29:45,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 41 transitions. Stem has 12 letters. Loop has 22 letters. [2022-12-13 14:29:45,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 14:29:45,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 41 transitions. Stem has 34 letters. Loop has 22 letters. [2022-12-13 14:29:45,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 14:29:45,181 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 41 transitions. Stem has 12 letters. Loop has 44 letters. [2022-12-13 14:29:45,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 14:29:45,183 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 159 states and 215 transitions. [2022-12-13 14:29:45,189 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-12-13 14:29:45,194 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 159 states to 128 states and 180 transitions. [2022-12-13 14:29:45,194 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-12-13 14:29:45,195 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 79 [2022-12-13 14:29:45,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 180 transitions. [2022-12-13 14:29:45,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 14:29:45,195 INFO L218 hiAutomatonCegarLoop]: Abstraction has 128 states and 180 transitions. [2022-12-13 14:29:45,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states and 180 transitions. [2022-12-13 14:29:45,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 106. [2022-12-13 14:29:45,208 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 14:29:45,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 140 transitions. [2022-12-13 14:29:45,209 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 140 transitions. [2022-12-13 14:29:45,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:29:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:29:45,210 INFO L87 Difference]: Start difference. First operand 106 states and 140 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:29:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:45,296 INFO L93 Difference]: Finished difference Result 139 states and 185 transitions. [2022-12-13 14:29:45,297 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 185 transitions. [2022-12-13 14:29:45,301 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-12-13 14:29:45,304 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 134 states and 180 transitions. [2022-12-13 14:29:45,304 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2022-12-13 14:29:45,304 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2022-12-13 14:29:45,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 134 states and 180 transitions. [2022-12-13 14:29:45,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 14:29:45,304 INFO L218 hiAutomatonCegarLoop]: Abstraction has 134 states and 180 transitions. [2022-12-13 14:29:45,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states and 180 transitions. [2022-12-13 14:29:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 118. [2022-12-13 14:29:45,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 78 states have internal predecessors, (89), 28 states have call successors, (29), 15 states have call predecessors, (29), 16 states have return successors, (37), 24 states have call predecessors, (37), 26 states have call successors, (37) [2022-12-13 14:29:45,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 155 transitions. [2022-12-13 14:29:45,311 INFO L240 hiAutomatonCegarLoop]: Abstraction has 118 states and 155 transitions. [2022-12-13 14:29:45,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:29:45,312 INFO L428 stractBuchiCegarLoop]: Abstraction has 118 states and 155 transitions. [2022-12-13 14:29:45,312 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 14:29:45,312 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 155 transitions. [2022-12-13 14:29:45,313 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-12-13 14:29:45,313 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 14:29:45,314 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 14:29:45,314 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:45,314 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 5, 3, 3, 3, 3, 2, 2, 2, 1] [2022-12-13 14:29:45,315 INFO L748 eck$LassoCheckResult]: Stem: 914#$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); 915#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 889#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 916#$Ultimate##0 ~n := #in~n; 900#L17 assume !(~n < 1); 901#L19 assume !(1 == ~n); 896#L22 call #t~ret4 := fibonacci(~n - 1);< 897#$Ultimate##0 ~n := #in~n; 958#L17 assume !(~n < 1); 957#L19 assume !(1 == ~n); 947#L22 call #t~ret4 := fibonacci(~n - 1);< 951#$Ultimate##0 ~n := #in~n; 955#L17 assume !(~n < 1); 953#L19 assume !(1 == ~n); 946#L22 call #t~ret4 := fibonacci(~n - 1);< 951#$Ultimate##0 ~n := #in~n; 955#L17 assume !(~n < 1); 953#L19 assume !(1 == ~n); 946#L22 call #t~ret4 := fibonacci(~n - 1);< 951#$Ultimate##0 ~n := #in~n; 956#L17 assume !(~n < 1); 954#L19 assume 1 == ~n;#res := 1; 952#fibonacciFINAL assume true; 950#fibonacciEXIT >#29#return; 892#L22-1 call #t~ret5 := fibonacci(~n - 2);< 948#$Ultimate##0 ~n := #in~n; 898#L17 assume ~n < 1;#res := 0; 899#fibonacciFINAL assume true; 1001#fibonacciEXIT >#31#return; 1000#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 998#fibonacciFINAL assume true; 991#fibonacciEXIT >#29#return; 921#L22-1 [2022-12-13 14:29:45,315 INFO L750 eck$LassoCheckResult]: Loop: 921#L22-1 call #t~ret5 := fibonacci(~n - 2);< 895#$Ultimate##0 ~n := #in~n; 997#L17 assume !(~n < 1); 920#L19 assume !(1 == ~n); 923#L22 call #t~ret4 := fibonacci(~n - 1);< 895#$Ultimate##0 ~n := #in~n; 997#L17 assume !(~n < 1); 920#L19 assume !(1 == ~n); 923#L22 call #t~ret4 := fibonacci(~n - 1);< 895#$Ultimate##0 ~n := #in~n; 997#L17 assume !(~n < 1); 920#L19 assume 1 == ~n;#res := 1; 924#fibonacciFINAL assume true; 987#fibonacciEXIT >#29#return; 921#L22-1 call #t~ret5 := fibonacci(~n - 2);< 895#$Ultimate##0 ~n := #in~n; 997#L17 assume !(~n < 1); 920#L19 assume !(1 == ~n); 923#L22 call #t~ret4 := fibonacci(~n - 1);< 895#$Ultimate##0 ~n := #in~n; 997#L17 assume !(~n < 1); 920#L19 assume 1 == ~n;#res := 1; 924#fibonacciFINAL assume true; 987#fibonacciEXIT >#29#return; 921#L22-1 call #t~ret5 := fibonacci(~n - 2);< 895#$Ultimate##0 ~n := #in~n; 997#L17 assume ~n < 1;#res := 0; 996#fibonacciFINAL assume true; 995#fibonacciEXIT >#31#return; 988#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 994#fibonacciFINAL assume true; 992#fibonacciEXIT >#31#return; 988#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 994#fibonacciFINAL assume true; 992#fibonacciEXIT >#29#return; 921#L22-1 [2022-12-13 14:29:45,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1460678817, now seen corresponding path program 1 times [2022-12-13 14:29:45,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:45,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707021460] [2022-12-13 14:29:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:45,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:29:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:45,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 14:29:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:45,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:29:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:29:45,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:45,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707021460] [2022-12-13 14:29:45,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707021460] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:29:45,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792199484] [2022-12-13 14:29:45,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:45,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:45,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:45,467 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:29:45,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 14:29:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:45,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 14:29:45,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:29:45,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:29:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 14:29:45,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792199484] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:29:45,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:29:45,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2022-12-13 14:29:45,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955025631] [2022-12-13 14:29:45,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:29:45,745 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 14:29:45,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:45,746 INFO L85 PathProgramCache]: Analyzing trace with hash -202791443, now seen corresponding path program 2 times [2022-12-13 14:29:45,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:45,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517630222] [2022-12-13 14:29:45,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:45,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:45,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 14:29:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:45,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 14:29:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:45,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:29:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:45,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 14:29:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:45,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:29:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:45,846 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 14:29:45,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:45,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517630222] [2022-12-13 14:29:45,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517630222] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:29:45,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739369774] [2022-12-13 14:29:45,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:29:45,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:45,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:45,847 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:29:45,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 14:29:45,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:29:45,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:29:45,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:29:45,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 14:29:45,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:29:46,006 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 14:29:46,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739369774] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:29:46,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:29:46,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-13 14:29:46,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064932842] [2022-12-13 14:29:46,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:29:46,007 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 14:29:46,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:46,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 14:29:46,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-12-13 14:29:46,008 INFO L87 Difference]: Start difference. First operand 118 states and 155 transitions. cyclomatic complexity: 42 Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 14:29:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:46,308 INFO L93 Difference]: Finished difference Result 186 states and 239 transitions. [2022-12-13 14:29:46,308 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 186 states and 239 transitions. [2022-12-13 14:29:46,310 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2022-12-13 14:29:46,312 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 186 states to 175 states and 228 transitions. [2022-12-13 14:29:46,312 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 116 [2022-12-13 14:29:46,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 116 [2022-12-13 14:29:46,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 228 transitions. [2022-12-13 14:29:46,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 14:29:46,313 INFO L218 hiAutomatonCegarLoop]: Abstraction has 175 states and 228 transitions. [2022-12-13 14:29:46,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states and 228 transitions. [2022-12-13 14:29:46,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-12-13 14:29:46,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 114 states have internal predecessors, (127), 43 states have call successors, (44), 23 states have call predecessors, (44), 22 states have return successors, (57), 37 states have call predecessors, (57), 40 states have call successors, (57) [2022-12-13 14:29:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 228 transitions. [2022-12-13 14:29:46,321 INFO L240 hiAutomatonCegarLoop]: Abstraction has 175 states and 228 transitions. [2022-12-13 14:29:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 14:29:46,322 INFO L428 stractBuchiCegarLoop]: Abstraction has 175 states and 228 transitions. [2022-12-13 14:29:46,322 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 14:29:46,322 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 175 states and 228 transitions. [2022-12-13 14:29:46,324 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2022-12-13 14:29:46,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 14:29:46,324 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 14:29:46,325 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 9, 8, 8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:46,325 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-13 14:29:46,325 INFO L748 eck$LassoCheckResult]: Stem: 1753#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(14, 2);call #Ultimate.allocInit(12, 3); 1754#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 9; 1726#L29 call main_#t~ret6#1 := fibonacci(main_~x~0#1);< 1755#$Ultimate##0 ~n := #in~n; 1813#L17 assume !(~n < 1); 1814#L19 assume !(1 == ~n); 1736#L22 call #t~ret4 := fibonacci(~n - 1);< 1768#$Ultimate##0 ~n := #in~n; 1735#L17 assume !(~n < 1); 1737#L19 assume !(1 == ~n); 1742#L22 call #t~ret4 := fibonacci(~n - 1);< 1743#$Ultimate##0 ~n := #in~n; 1812#L17 assume !(~n < 1); 1811#L19 assume !(1 == ~n); 1807#L22 call #t~ret4 := fibonacci(~n - 1);< 1810#$Ultimate##0 ~n := #in~n; 1809#L17 assume !(~n < 1); 1808#L19 assume !(1 == ~n); 1803#L22 call #t~ret4 := fibonacci(~n - 1);< 1806#$Ultimate##0 ~n := #in~n; 1805#L17 assume !(~n < 1); 1804#L19 assume !(1 == ~n); 1799#L22 call #t~ret4 := fibonacci(~n - 1);< 1802#$Ultimate##0 ~n := #in~n; 1801#L17 assume !(~n < 1); 1800#L19 assume !(1 == ~n); 1757#L22 call #t~ret4 := fibonacci(~n - 1);< 1793#$Ultimate##0 ~n := #in~n; 1797#L17 assume !(~n < 1); 1795#L19 assume !(1 == ~n); 1761#L22 call #t~ret4 := fibonacci(~n - 1);< 1793#$Ultimate##0 ~n := #in~n; 1797#L17 assume !(~n < 1); 1795#L19 assume !(1 == ~n); 1761#L22 call #t~ret4 := fibonacci(~n - 1);< 1793#$Ultimate##0 ~n := #in~n; 1798#L17 assume !(~n < 1); 1796#L19 assume 1 == ~n;#res := 1; 1794#fibonacciFINAL assume true; 1792#fibonacciEXIT >#29#return; 1729#L22-1 call #t~ret5 := fibonacci(~n - 2);< 1791#$Ultimate##0 ~n := #in~n; 1889#L17 assume ~n < 1;#res := 0; 1888#fibonacciFINAL assume true; 1887#fibonacciEXIT >#31#return; 1886#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1883#fibonacciFINAL assume true; 1862#fibonacciEXIT >#29#return; 1758#L22-1 [2022-12-13 14:29:46,325 INFO L750 eck$LassoCheckResult]: Loop: 1758#L22-1 call #t~ret5 := fibonacci(~n - 2);< 1865#$Ultimate##0 ~n := #in~n; 1879#L17 assume !(~n < 1); 1878#L19 assume !(1 == ~n); 1762#L22 call #t~ret4 := fibonacci(~n - 1);< 1865#$Ultimate##0 ~n := #in~n; 1879#L17 assume !(~n < 1); 1878#L19 assume !(1 == ~n); 1762#L22 call #t~ret4 := fibonacci(~n - 1);< 1865#$Ultimate##0 ~n := #in~n; 1879#L17 assume !(~n < 1); 1878#L19 assume 1 == ~n;#res := 1; 1873#fibonacciFINAL assume true; 1884#fibonacciEXIT >#29#return; 1848#L22-1 call #t~ret5 := fibonacci(~n - 2);< 1864#$Ultimate##0 ~n := #in~n; 1875#L17 assume ~n < 1;#res := 0; 1876#fibonacciFINAL assume true; 1885#fibonacciEXIT >#31#return; 1745#L22-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1763#fibonacciFINAL assume true; 1769#fibonacciEXIT >#29#return; 1758#L22-1 [2022-12-13 14:29:46,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:46,325 INFO L85 PathProgramCache]: Analyzing trace with hash -774419201, now seen corresponding path program 2 times [2022-12-13 14:29:46,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:46,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195559727] [2022-12-13 14:29:46,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:46,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:29:46,334 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:29:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:29:46,343 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:29:46,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1166275439, now seen corresponding path program 3 times [2022-12-13 14:29:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:46,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270763598] [2022-12-13 14:29:46,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:46,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:29:46,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:29:46,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:29:46,350 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:29:46,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1657818605, now seen corresponding path program 3 times [2022-12-13 14:29:46,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:46,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143872794] [2022-12-13 14:29:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:46,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:46,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 14:29:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 14:29:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:46,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:29:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:46,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 14:29:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:46,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 14:29:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:46,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:29:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 122 proven. 136 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-12-13 14:29:46,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:46,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143872794] [2022-12-13 14:29:46,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143872794] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:29:46,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339633757] [2022-12-13 14:29:46,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 14:29:46,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:46,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:46,576 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:29:46,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 14:29:46,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-12-13 14:29:46,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:29:46,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 14:29:46,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 113 proven. 47 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-12-13 14:29:46,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:29:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 113 proven. 49 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-12-13 14:29:46,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339633757] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:29:46,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:29:46,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 10, 12] total 31 [2022-12-13 14:29:46,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585833994] [2022-12-13 14:29:46,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:29:47,094 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 14:29:47,094 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 14:29:47,094 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 14:29:47,094 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 14:29:47,094 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 14:29:47,094 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:47,095 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 14:29:47,095 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 14:29:47,095 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration5_Loop [2022-12-13 14:29:47,095 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 14:29:47,095 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 14:29:47,096 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 14:29:47,097 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 14:29:47,102 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 14:29:47,104 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 14:29:47,128 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 14:29:47,129 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 14:29:47,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:47,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:47,130 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:47,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 14:29:47,132 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 14:29:47,132 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 14:29:47,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 14:29:47,143 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 14:29:47,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-12-13 14:29:47,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:47,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:47,147 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:47,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 14:29:47,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 14:29:47,149 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 14:29:47,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-12-13 14:29:47,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:47,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:47,169 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:47,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 14:29:47,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 14:29:47,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 14:29:47,450 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 14:29:47,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-12-13 14:29:47,454 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 14:29:47,454 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 14:29:47,454 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 14:29:47,454 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 14:29:47,454 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 14:29:47,454 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:47,454 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 14:29:47,454 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 14:29:47,454 INFO L133 ssoRankerPreferences]: Filename of dumped script: Fibonacci02.c_Iteration5_Loop [2022-12-13 14:29:47,454 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 14:29:47,454 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 14:29:47,455 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 14:29:47,456 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 14:29:47,458 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 14:29:47,461 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 14:29:47,478 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 14:29:47,478 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 14:29:47,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:47,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:47,479 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:47,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 14:29:47,481 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 14:29:47,491 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 14:29:47,491 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 14:29:47,491 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 14:29:47,491 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 14:29:47,491 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 14:29:47,492 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 14:29:47,492 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 14:29:47,493 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 14:29:47,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-12-13 14:29:47,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:47,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:47,497 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:47,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 14:29:47,499 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 14:29:47,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 14:29:47,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 14:29:47,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 14:29:47,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 14:29:47,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 14:29:47,509 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 14:29:47,509 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 14:29:47,511 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 14:29:47,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-12-13 14:29:47,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:47,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:47,514 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:47,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-12-13 14:29:47,516 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 14:29:47,526 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 14:29:47,526 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 14:29:47,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 14:29:47,527 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 14:29:47,527 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 14:29:47,527 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 14:29:47,528 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 14:29:47,530 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 14:29:47,532 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 14:29:47,532 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 14:29:47,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 14:29:47,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:47,533 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:47,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-12-13 14:29:47,535 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 14:29:47,535 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 14:29:47,535 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 14:29:47,535 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibonacci_~n) = 1*fibonacci_~n Supporting invariants [] [2022-12-13 14:29:47,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-12-13 14:29:47,538 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 14:29:47,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:47,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 14:29:47,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:47,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 14:29:47,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:47,857 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 14:29:47,857 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 14:29:47,858 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 175 states and 228 transitions. cyclomatic complexity: 59 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:29:47,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-12-13 14:29:48,029 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 175 states and 228 transitions. cyclomatic complexity: 59. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 288 states and 394 transitions. Complement of second has 45 states. [2022-12-13 14:29:48,030 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 14:29:48,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:29:48,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 41 transitions. [2022-12-13 14:29:48,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 41 transitions. Stem has 48 letters. Loop has 22 letters. [2022-12-13 14:29:48,031 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 14:29:48,031 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 14:29:48,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 14:29:48,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 14:29:48,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:48,314 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 14:29:48,315 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 14:29:48,315 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 175 states and 228 transitions. cyclomatic complexity: 59 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:29:48,409 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 175 states and 228 transitions. cyclomatic complexity: 59. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 361 states and 481 transitions. Complement of second has 25 states. [2022-12-13 14:29:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-12-13 14:29:48,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:29:48,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-12-13 14:29:48,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 48 letters. Loop has 22 letters. [2022-12-13 14:29:48,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 14:29:48,411 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 14:29:48,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 14:29:48,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 14:29:48,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:48,695 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 14:29:48,696 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 14:29:48,696 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 175 states and 228 transitions. cyclomatic complexity: 59 Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:29:48,870 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 175 states and 228 transitions. cyclomatic complexity: 59. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 1279 states and 1799 transitions. Complement of second has 138 states. [2022-12-13 14:29:48,871 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 14:29:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 6 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 14:29:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 46 transitions. [2022-12-13 14:29:48,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 48 letters. Loop has 22 letters. [2022-12-13 14:29:48,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 14:29:48,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 70 letters. Loop has 22 letters. [2022-12-13 14:29:48,874 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 14:29:48,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 46 transitions. Stem has 48 letters. Loop has 44 letters. [2022-12-13 14:29:48,876 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 14:29:48,876 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1279 states and 1799 transitions. [2022-12-13 14:29:48,890 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 58 [2022-12-13 14:29:48,905 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1279 states to 789 states and 1177 transitions. [2022-12-13 14:29:48,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 305 [2022-12-13 14:29:48,906 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 344 [2022-12-13 14:29:48,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 789 states and 1177 transitions. [2022-12-13 14:29:48,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 14:29:48,907 INFO L218 hiAutomatonCegarLoop]: Abstraction has 789 states and 1177 transitions. [2022-12-13 14:29:48,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states and 1177 transitions. [2022-12-13 14:29:48,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 637. [2022-12-13 14:29:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 388 states have (on average 1.1623711340206186) internal successors, (451), 413 states have internal predecessors, (451), 153 states have call successors, (167), 77 states have call predecessors, (167), 96 states have return successors, (281), 146 states have call predecessors, (281), 142 states have call successors, (281) [2022-12-13 14:29:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 899 transitions. [2022-12-13 14:29:48,964 INFO L240 hiAutomatonCegarLoop]: Abstraction has 637 states and 899 transitions. [2022-12-13 14:29:48,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:48,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-13 14:29:48,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2022-12-13 14:29:48,965 INFO L87 Difference]: Start difference. First operand 637 states and 899 transitions. Second operand has 31 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 24 states have internal predecessors, (66), 17 states have call successors, (23), 10 states have call predecessors, (23), 6 states have return successors, (15), 9 states have call predecessors, (15), 10 states have call successors, (15) [2022-12-13 14:29:49,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:49,585 INFO L93 Difference]: Finished difference Result 533 states and 626 transitions. [2022-12-13 14:29:49,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 533 states and 626 transitions. [2022-12-13 14:29:49,589 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 14:29:49,590 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 533 states to 0 states and 0 transitions. [2022-12-13 14:29:49,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 14:29:49,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 14:29:49,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 14:29:49,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:29:49,590 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 14:29:49,590 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 14:29:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-13 14:29:49,590 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 14:29:49,590 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 14:29:49,590 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 14:29:49,590 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 14:29:49,591 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 14:29:49,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 02:29:49 BoogieIcfgContainer [2022-12-13 14:29:49,595 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 14:29:49,596 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:29:49,596 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:29:49,596 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:29:49,596 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:29:42" (3/4) ... [2022-12-13 14:29:49,598 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 14:29:49,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:29:49,599 INFO L158 Benchmark]: Toolchain (without parser) took 7119.78ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 81.4MB in the beginning and 49.5MB in the end (delta: 31.9MB). Peak memory consumption was 68.2MB. Max. memory is 16.1GB. [2022-12-13 14:29:49,599 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:29:49,599 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.20ms. Allocated memory is still 113.2MB. Free memory was 81.4MB in the beginning and 71.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 14:29:49,599 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.51ms. Allocated memory is still 113.2MB. Free memory was 71.6MB in the beginning and 70.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:29:49,599 INFO L158 Benchmark]: Boogie Preprocessor took 13.15ms. Allocated memory is still 113.2MB. Free memory was 70.2MB in the beginning and 69.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:29:49,599 INFO L158 Benchmark]: RCFGBuilder took 177.56ms. Allocated memory is still 113.2MB. Free memory was 69.1MB in the beginning and 60.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 14:29:49,600 INFO L158 Benchmark]: BuchiAutomizer took 6750.39ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 60.1MB in the beginning and 50.5MB in the end (delta: 9.6MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2022-12-13 14:29:49,600 INFO L158 Benchmark]: Witness Printer took 2.38ms. Allocated memory is still 148.9MB. Free memory was 50.5MB in the beginning and 49.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:29:49,601 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory is still 87.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.20ms. Allocated memory is still 113.2MB. Free memory was 81.4MB in the beginning and 71.6MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.51ms. Allocated memory is still 113.2MB. Free memory was 71.6MB in the beginning and 70.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.15ms. Allocated memory is still 113.2MB. Free memory was 70.2MB in the beginning and 69.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 177.56ms. Allocated memory is still 113.2MB. Free memory was 69.1MB in the beginning and 60.1MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 6750.39ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 60.1MB in the beginning and 50.5MB in the end (delta: 9.6MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. * Witness Printer took 2.38ms. Allocated memory is still 148.9MB. Free memory was 50.5MB in the beginning and 49.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (4 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 10 locations. One nondeterministic module has affine ranking function n and consists of 10 locations. 4 modules have a trivial ranking function, the largest among these consists of 31 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.7s and 6 iterations. TraceHistogramMax:10. Analysis of lassos took 3.4s. Construction of modules took 0.6s. Büchi inclusion checks took 2.3s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 195 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 16/46 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 544 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 528 mSDsluCounter, 439 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 297 mSDsCounter, 431 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1265 IncrementalHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 431 mSolverCounterUnsat, 142 mSDtfsCounter, 1265 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI2 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp87 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq194 hnf91 smp88 dnf100 smp100 tf109 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s 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 14:29:49,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-13 14:29:49,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 14:29:50,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 14:29:50,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 14:29:50,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35fa5d2a-971a-4352-a63a-e89445e7fa78/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