./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.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_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/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_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/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_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/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 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- 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 17:37:10,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:37:10,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:37:10,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:37:10,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:37:10,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:37:10,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:37:10,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:37:10,551 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:37:10,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:37:10,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:37:10,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:37:10,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:37:10,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:37:10,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:37:10,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:37:10,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:37:10,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:37:10,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:37:10,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:37:10,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:37:10,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:37:10,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:37:10,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:37:10,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:37:10,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:37:10,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:37:10,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:37:10,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:37:10,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:37:10,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:37:10,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:37:10,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:37:10,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:37:10,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:37:10,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:37:10,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:37:10,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:37:10,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:37:10,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:37:10,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:37:10,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-12-13 17:37:10,600 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:37:10,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:37:10,600 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:37:10,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:37:10,601 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:37:10,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:37:10,602 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:37:10,602 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 17:37:10,602 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 17:37:10,602 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 17:37:10,602 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 17:37:10,602 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 17:37:10,603 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 17:37:10,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:37:10,603 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:37:10,603 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 17:37:10,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:37:10,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:37:10,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:37:10,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 17:37:10,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 17:37:10,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 17:37:10,604 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:37:10,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:37:10,604 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 17:37:10,605 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:37:10,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 17:37:10,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:37:10,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:37:10,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:37:10,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:37:10,606 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 17:37:10,607 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_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2022-12-13 17:37:10,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:37:10,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:37:10,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:37:10,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:37:10,815 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:37:10,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2022-12-13 17:37:13,402 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:37:13,515 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:37:13,515 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2022-12-13 17:37:13,520 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/data/470e13330/76f4d23e45d348c68f18f27c4da9ecde/FLAGd3f4e29a0 [2022-12-13 17:37:13,530 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/data/470e13330/76f4d23e45d348c68f18f27c4da9ecde [2022-12-13 17:37:13,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:37:13,533 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:37:13,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:37:13,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:37:13,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:37:13,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5331f65e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13, skipping insertion in model container [2022-12-13 17:37:13,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:37:13,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:37:13,663 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_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2022-12-13 17:37:13,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:37:13,674 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:37:13,685 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_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2022-12-13 17:37:13,685 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:37:13,695 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:37:13,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13 WrapperNode [2022-12-13 17:37:13,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:37:13,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:37:13,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:37:13,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:37:13,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,718 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-12-13 17:37:13,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:37:13,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:37:13,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:37:13,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:37:13,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,730 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:37:13,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:37:13,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:37:13,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:37:13,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13" (1/1) ... [2022-12-13 17:37:13,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:13,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:13,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:13,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 17:37:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:37:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:37:13,786 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-12-13 17:37:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-12-13 17:37:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-12-13 17:37:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-12-13 17:37:13,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:37:13,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:37:13,839 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:37:13,840 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:37:13,913 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:37:13,918 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:37:13,918 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 17:37:13,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:37:13 BoogieIcfgContainer [2022-12-13 17:37:13,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:37:13,921 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 17:37:13,921 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 17:37:13,924 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 17:37:13,924 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 17:37:13,924 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 05:37:13" (1/3) ... [2022-12-13 17:37:13,925 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51cb55c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 05:37:13, skipping insertion in model container [2022-12-13 17:37:13,925 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 17:37:13,925 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:37:13" (2/3) ... [2022-12-13 17:37:13,926 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@51cb55c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 05:37:13, skipping insertion in model container [2022-12-13 17:37:13,926 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 17:37:13,926 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:37:13" (3/3) ... [2022-12-13 17:37:13,927 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-2.c [2022-12-13 17:37:13,970 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 17:37:13,970 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 17:37:13,970 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 17:37:13,970 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 17:37:13,970 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 17:37:13,971 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 17:37:13,971 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 17:37:13,971 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 17:37:13,974 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 17:37:13,991 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 17:37:13,991 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:37:13,991 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:37:13,995 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 17:37:13,996 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:13,996 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 17:37:13,996 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 17:37:13,998 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 17:37:13,998 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:37:13,998 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:37:13,999 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 17:37:13,999 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:14,013 INFO L748 eck$LassoCheckResult]: Stem: 24#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 12#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17#$Ultimate##0true [2022-12-13 17:37:14,014 INFO L750 eck$LassoCheckResult]: Loop: 17#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 14#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 13#L22true assume !(1 == ~n); 20#L25true call #t~ret6 := fibo1(~n - 1);< 17#$Ultimate##0true [2022-12-13 17:37:14,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:14,019 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-12-13 17:37:14,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:14,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650891478] [2022-12-13 17:37:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:14,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:14,098 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:37:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:14,116 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:37:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:14,118 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-12-13 17:37:14,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:14,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40934771] [2022-12-13 17:37:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:14,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:14,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:37:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:14,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:37:14,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:14,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-12-13 17:37:14,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:14,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120116516] [2022-12-13 17:37:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:14,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:14,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:14,140 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:37:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:14,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:37:14,298 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:37:14,298 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:37:14,298 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:37:14,298 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:37:14,299 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 17:37:14,299 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,299 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:37:14,299 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:37:14,299 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2022-12-13 17:37:14,299 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:37:14,299 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:37:14,310 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 17:37:14,317 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 17:37:14,320 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 17:37:14,322 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 17:37:14,324 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 17:37:14,326 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 17:37:14,328 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 17:37:14,330 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 17:37:14,381 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:37:14,381 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 17:37:14,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 17:37:14,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:14,386 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:14,402 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:14,402 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:14,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:14,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 17:37:14,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:14,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:14,421 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:14,421 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:14,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 17:37:14,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,425 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 17:37:14,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:14,428 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:14,439 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:14,439 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:14,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 17:37:14,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,443 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 17:37:14,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:14,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:14,456 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:14,457 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:14,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:14,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,461 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 17:37:14,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:14,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:14,474 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:14,475 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:14,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 17:37:14,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,479 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 17:37:14,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:14,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:14,492 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:14,492 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:14,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:14,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,496 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 17:37:14,498 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:14,498 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:14,509 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:14,509 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:14,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-12-13 17:37:14,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,513 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 17:37:14,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:14,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:14,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 17:37:14,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,530 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 17:37:14,532 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 17:37:14,532 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:14,590 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 17:37:14,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 17:37:14,593 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:37:14,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:37:14,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:37:14,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:37:14,594 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 17:37:14,594 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,594 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:37:14,594 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:37:14,594 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2022-12-13 17:37:14,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:37:14,594 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:37:14,595 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 17:37:14,598 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 17:37:14,599 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 17:37:14,601 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 17:37:14,602 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 17:37:14,604 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 17:37:14,610 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 17:37:14,612 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 17:37:14,640 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:37:14,645 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 17:37:14,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,647 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 17:37:14,649 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 17:37:14,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:14,660 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:14,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:14,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:14,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:14,662 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:14,662 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:14,664 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:14,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-12-13 17:37:14,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,669 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 17:37:14,671 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 17:37:14,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:14,681 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:14,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:14,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:14,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:14,681 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:14,682 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:14,683 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:14,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-12-13 17:37:14,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,687 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 17:37:14,689 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 17:37:14,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:14,699 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:14,699 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:14,699 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:14,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:14,700 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:14,700 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:14,702 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:14,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-12-13 17:37:14,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,705 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 17:37:14,708 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 17:37:14,718 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:14,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:14,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:14,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:14,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:14,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:14,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:14,721 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:14,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 17:37:14,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,725 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 17:37:14,727 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 17:37:14,737 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:14,737 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:14,737 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:14,737 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:14,738 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:14,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:14,738 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:14,740 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:14,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:14,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,743 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 17:37:14,746 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 17:37:14,755 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:14,756 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:14,756 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:14,756 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:14,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:14,757 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:14,757 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:14,759 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 17:37:14,763 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 17:37:14,763 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 17:37:14,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:14,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:14,808 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:14,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 17:37:14,809 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 17:37:14,810 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 17:37:14,810 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 17:37:14,810 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-12-13 17:37:14,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 17:37:14,815 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 17:37:14,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:14,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 17:37:14,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:14,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:37:14,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:14,920 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 17:37:14,948 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-12-13 17:37:14,950 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:37:15,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-12-13 17:37:15,100 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2022-12-13 17:37:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-12-13 17:37:15,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:37:15,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-12-13 17:37:15,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-12-13 17:37:15,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:15,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-12-13 17:37:15,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:15,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-12-13 17:37:15,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:15,113 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-12-13 17:37:15,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 17:37:15,126 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-12-13 17:37:15,127 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-12-13 17:37:15,127 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-12-13 17:37:15,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-12-13 17:37:15,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:37:15,129 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-12-13 17:37:15,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-12-13 17:37:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-12-13 17:37:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2022-12-13 17:37:15,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-12-13 17:37:15,162 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-12-13 17:37:15,162 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-12-13 17:37:15,162 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 17:37:15,162 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-12-13 17:37:15,164 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 17:37:15,164 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:37:15,164 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:37:15,165 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:15,165 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:15,165 INFO L748 eck$LassoCheckResult]: Stem: 234#$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(18, 2);call #Ultimate.allocInit(12, 3); 221#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 216#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 215#$Ultimate##0 ~n := #in~n; 217#L10 assume !(~n < 1); 227#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 231#$Ultimate##0 ~n := #in~n; 245#L20 assume !(~n < 1); 246#L22 assume !(1 == ~n); 201#L25 call #t~ret6 := fibo1(~n - 1);< 218#$Ultimate##0 ~n := #in~n; 220#L10 assume ~n < 1;#res := 0; 207#fibo1FINAL assume true; 208#fibo1EXIT >#46#return; 209#L25-1 [2022-12-13 17:37:15,165 INFO L750 eck$LassoCheckResult]: Loop: 209#L25-1 call #t~ret7 := fibo1(~n - 2);< 214#$Ultimate##0 ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 213#L15 call #t~ret4 := fibo2(~n - 1);< 223#$Ultimate##0 ~n := #in~n; 243#L20 assume !(~n < 1); 244#L22 assume !(1 == ~n); 222#L25 call #t~ret6 := fibo1(~n - 1);< 214#$Ultimate##0 ~n := #in~n; 240#L10 assume ~n < 1;#res := 0; 236#fibo1FINAL assume true; 237#fibo1EXIT >#46#return; 209#L25-1 [2022-12-13 17:37:15,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:15,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-12-13 17:37:15,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:15,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31930870] [2022-12-13 17:37:15,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:15,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:37:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:15,281 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 17:37:15,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:37:15,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31930870] [2022-12-13 17:37:15,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31930870] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:37:15,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:37:15,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:37:15,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729314229] [2022-12-13 17:37:15,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:37:15,285 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 17:37:15,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:15,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-12-13 17:37:15,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:15,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820797285] [2022-12-13 17:37:15,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:15,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:15,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:37:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:15,340 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 17:37:15,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:37:15,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820797285] [2022-12-13 17:37:15,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820797285] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:37:15,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:37:15,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:37:15,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636113628] [2022-12-13 17:37:15,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:37:15,341 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 17:37:15,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:37:15,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:37:15,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:37:15,344 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:37:15,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:37:15,403 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-12-13 17:37:15,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-12-13 17:37:15,405 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 17:37:15,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-12-13 17:37:15,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-12-13 17:37:15,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-12-13 17:37:15,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-12-13 17:37:15,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:37:15,408 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-12-13 17:37:15,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-12-13 17:37:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-12-13 17:37:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-13 17:37:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-12-13 17:37:15,415 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-12-13 17:37:15,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:37:15,417 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-12-13 17:37:15,417 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 17:37:15,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-12-13 17:37:15,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 17:37:15,418 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:37:15,419 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:37:15,419 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:15,419 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:15,420 INFO L748 eck$LassoCheckResult]: Stem: 379#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 362#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 363#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 364#$Ultimate##0 ~n := #in~n; 365#L10 assume !(~n < 1); 393#L12 assume !(1 == ~n); 357#L15 call #t~ret4 := fibo2(~n - 1);< 377#$Ultimate##0 ~n := #in~n; 394#L20 assume !(~n < 1); 395#L22 assume !(1 == ~n); 346#L25 call #t~ret6 := fibo1(~n - 1);< 366#$Ultimate##0 ~n := #in~n; 368#L10 assume !(~n < 1); 371#L12 assume 1 == ~n;#res := 1; 372#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 353#L25-1 [2022-12-13 17:37:15,420 INFO L750 eck$LassoCheckResult]: Loop: 353#L25-1 call #t~ret7 := fibo1(~n - 2);< 360#$Ultimate##0 ~n := #in~n; 386#L10 assume !(~n < 1); 385#L12 assume !(1 == ~n); 359#L15 call #t~ret4 := fibo2(~n - 1);< 390#$Ultimate##0 ~n := #in~n; 389#L20 assume !(~n < 1); 387#L22 assume !(1 == ~n); 354#L25 call #t~ret6 := fibo1(~n - 1);< 360#$Ultimate##0 ~n := #in~n; 386#L10 assume !(~n < 1); 385#L12 assume 1 == ~n;#res := 1; 382#fibo1FINAL assume true; 383#fibo1EXIT >#46#return; 353#L25-1 [2022-12-13 17:37:15,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-12-13 17:37:15,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:15,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88866870] [2022-12-13 17:37:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:15,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 17:37:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:15,509 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 17:37:15,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:37:15,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88866870] [2022-12-13 17:37:15,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88866870] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:37:15,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962179487] [2022-12-13 17:37:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:15,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:37:15,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:15,511 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:37:15,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 17:37:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:15,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:37:15,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:15,573 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 17:37:15,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:37:15,667 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 17:37:15,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962179487] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:37:15,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:37:15,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-12-13 17:37:15,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145231781] [2022-12-13 17:37:15,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:37:15,669 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 17:37:15,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:15,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-12-13 17:37:15,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:15,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298883551] [2022-12-13 17:37:15,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:15,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:15,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:37:15,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:15,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:37:15,811 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:37:15,811 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:37:15,811 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:37:15,811 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:37:15,811 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 17:37:15,811 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:15,811 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:37:15,811 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:37:15,811 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2022-12-13 17:37:15,811 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:37:15,811 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:37:15,812 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 17:37:15,814 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 17:37:15,815 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 17:37:15,817 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 17:37:15,818 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 17:37:15,823 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 17:37:15,824 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 17:37:15,826 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 17:37:15,857 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:37:15,857 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 17:37:15,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:15,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:15,858 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:15,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 17:37:15,861 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:15,861 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:15,873 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:15,873 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:15,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-12-13 17:37:15,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:15,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:15,877 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:15,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 17:37:15,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:15,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:15,890 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:15,890 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:15,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-12-13 17:37:15,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:15,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:15,894 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:15,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 17:37:15,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:15,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:15,907 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:15,907 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:15,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-12-13 17:37:15,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:15,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:15,910 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:15,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 17:37:15,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:15,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:15,924 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:15,924 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:15,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-12-13 17:37:15,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:15,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:15,928 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:15,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 17:37:15,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:15,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:15,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:15,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:15,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:15,945 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:15,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 17:37:15,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 17:37:15,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:17,111 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 17:37:17,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:17,115 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:37:17,115 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:37:17,115 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:37:17,115 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:37:17,115 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 17:37:17,115 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:17,115 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:37:17,115 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:37:17,115 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2022-12-13 17:37:17,115 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:37:17,115 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:37:17,116 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 17:37:17,118 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 17:37:17,119 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 17:37:17,120 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 17:37:17,124 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 17:37:17,126 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 17:37:17,127 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 17:37:17,128 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 17:37:17,156 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:37:17,156 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 17:37:17,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:17,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:17,157 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:17,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-12-13 17:37:17,159 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 17:37:17,168 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:17,168 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:17,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:17,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:17,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:17,169 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:17,169 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:17,170 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:17,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-12-13 17:37:17,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:17,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:17,173 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:17,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-12-13 17:37:17,176 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 17:37:17,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:17,186 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:17,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:17,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:17,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:17,186 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:17,186 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:17,188 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:17,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:17,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:17,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:17,191 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:17,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-12-13 17:37:17,193 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 17:37:17,203 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:17,203 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:17,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:17,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:17,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:17,204 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:17,204 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:17,205 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:17,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:17,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:17,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:17,208 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:17,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-12-13 17:37:17,210 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 17:37:17,222 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:17,222 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:17,222 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:17,222 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:17,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:17,223 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:17,223 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:17,226 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 17:37:17,229 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 17:37:17,229 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 17:37:17,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:17,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:17,230 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:17,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-12-13 17:37:17,232 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 17:37:17,232 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 17:37:17,232 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 17:37:17,232 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-12-13 17:37:17,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-12-13 17:37:17,235 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 17:37:17,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:17,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 17:37:17,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:17,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:17,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 17:37:17,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:17,416 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 17:37:17,417 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-12-13 17:37:17,417 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:37:17,708 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2022-12-13 17:37:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-12-13 17:37:17,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:37:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-12-13 17:37:17,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-12-13 17:37:17,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:17,710 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-12-13 17:37:17,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:17,710 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-12-13 17:37:17,711 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:17,711 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-12-13 17:37:17,714 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 17:37:17,717 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-12-13 17:37:17,717 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-12-13 17:37:17,717 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-12-13 17:37:17,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-12-13 17:37:17,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:37:17,719 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-12-13 17:37:17,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-12-13 17:37:17,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-12-13 17:37:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2022-12-13 17:37:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-12-13 17:37:17,728 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-12-13 17:37:17,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:37:17,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 17:37:17,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:37:17,728 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:37:17,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:37:17,874 INFO L93 Difference]: Finished difference Result 213 states and 281 transitions. [2022-12-13 17:37:17,874 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 281 transitions. [2022-12-13 17:37:17,877 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 17:37:17,879 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 204 states and 272 transitions. [2022-12-13 17:37:17,879 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2022-12-13 17:37:17,880 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2022-12-13 17:37:17,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 204 states and 272 transitions. [2022-12-13 17:37:17,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:37:17,880 INFO L218 hiAutomatonCegarLoop]: Abstraction has 204 states and 272 transitions. [2022-12-13 17:37:17,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states and 272 transitions. [2022-12-13 17:37:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2022-12-13 17:37:17,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 120 states have (on average 1.225) internal successors, (147), 129 states have internal predecessors, (147), 44 states have call successors, (46), 24 states have call predecessors, (46), 28 states have return successors, (64), 38 states have call predecessors, (64), 42 states have call successors, (64) [2022-12-13 17:37:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2022-12-13 17:37:17,889 INFO L240 hiAutomatonCegarLoop]: Abstraction has 192 states and 257 transitions. [2022-12-13 17:37:17,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 17:37:17,890 INFO L428 stractBuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2022-12-13 17:37:17,891 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 17:37:17,891 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 192 states and 257 transitions. [2022-12-13 17:37:17,892 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 17:37:17,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:37:17,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:37:17,894 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:17,894 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:17,894 INFO L748 eck$LassoCheckResult]: Stem: 1310#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1277#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 1278#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1313#$Ultimate##0 ~n := #in~n; 1299#L10 assume !(~n < 1); 1300#L12 assume !(1 == ~n); 1244#L15 call #t~ret4 := fibo2(~n - 1);< 1350#$Ultimate##0 ~n := #in~n; 1349#L20 assume !(~n < 1); 1243#L22 assume !(1 == ~n); 1245#L25 call #t~ret6 := fibo1(~n - 1);< 1275#$Ultimate##0 ~n := #in~n; 1276#L10 assume !(~n < 1); 1292#L12 assume !(1 == ~n); 1293#L15 call #t~ret4 := fibo2(~n - 1);< 1301#$Ultimate##0 ~n := #in~n; 1423#L20 assume !(~n < 1); 1422#L22 assume !(1 == ~n); 1280#L25 call #t~ret6 := fibo1(~n - 1);< 1343#$Ultimate##0 ~n := #in~n; 1344#L10 assume !(~n < 1); 1352#L12 assume !(1 == ~n); 1353#L15 call #t~ret4 := fibo2(~n - 1);< 1361#$Ultimate##0 ~n := #in~n; 1365#L20 assume ~n < 1;#res := 0; 1364#fibo2FINAL assume true; 1360#fibo2EXIT >#50#return; 1357#L15-1 call #t~ret5 := fibo2(~n - 2);< 1358#$Ultimate##0 ~n := #in~n; 1362#L20 assume ~n < 1;#res := 0; 1359#fibo2FINAL assume true; 1356#fibo2EXIT >#52#return; 1354#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1355#fibo1FINAL assume true; 1421#fibo1EXIT >#46#return; 1255#L25-1 call #t~ret7 := fibo1(~n - 2);< 1342#$Ultimate##0 ~n := #in~n; 1372#L10 assume ~n < 1;#res := 0; 1254#fibo1FINAL assume true; 1257#fibo1EXIT >#48#return; 1419#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1417#fibo2FINAL assume true; 1414#fibo2EXIT >#50#return; 1247#L15-1 call #t~ret5 := fibo2(~n - 2);< 1246#$Ultimate##0 [2022-12-13 17:37:17,894 INFO L750 eck$LassoCheckResult]: Loop: 1246#$Ultimate##0 ~n := #in~n; 1250#L20 assume !(~n < 1); 1428#L22 assume !(1 == ~n); 1270#L25 call #t~ret6 := fibo1(~n - 1);< 1273#$Ultimate##0 ~n := #in~n; 1274#L10 assume !(~n < 1); 1290#L12 assume !(1 == ~n); 1248#L15 call #t~ret4 := fibo2(~n - 1);< 1246#$Ultimate##0 [2022-12-13 17:37:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash -960039395, now seen corresponding path program 1 times [2022-12-13 17:37:17,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:17,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790649456] [2022-12-13 17:37:17,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:17,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:17,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:37:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:17,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:17,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:37:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:17,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 17:37:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 17:37:17,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:37:17,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790649456] [2022-12-13 17:37:17,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790649456] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:37:17,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601565851] [2022-12-13 17:37:17,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:17,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:37:17,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:17,987 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:37:17,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 17:37:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:18,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 17:37:18,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:37:18,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:37:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 17:37:18,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601565851] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:37:18,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:37:18,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 25 [2022-12-13 17:37:18,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633568775] [2022-12-13 17:37:18,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:37:18,444 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 17:37:18,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:18,444 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2022-12-13 17:37:18,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:18,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590648873] [2022-12-13 17:37:18,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:18,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:18,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:37:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:18,451 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:37:18,523 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:37:18,524 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:37:18,524 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:37:18,524 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:37:18,524 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 17:37:18,524 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,524 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:37:18,524 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:37:18,524 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2022-12-13 17:37:18,524 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:37:18,524 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:37:18,525 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 17:37:18,526 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 17:37:18,528 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 17:37:18,529 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 17:37:18,530 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 17:37:18,532 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 17:37:18,533 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 17:37:18,539 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 17:37:18,571 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:37:18,572 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 17:37:18,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,573 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-12-13 17:37:18,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:18,575 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:18,586 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:18,586 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:18,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:18,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,590 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-12-13 17:37:18,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:18,592 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:18,603 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:18,603 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:18,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:18,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,607 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-12-13 17:37:18,609 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:18,610 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:18,621 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:18,621 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:18,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2022-12-13 17:37:18,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,624 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-12-13 17:37:18,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:18,627 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:18,638 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:18,638 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:18,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-12-13 17:37:18,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,641 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-12-13 17:37:18,644 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:18,644 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:18,655 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:18,655 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:18,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:18,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,659 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-12-13 17:37:18,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:18,661 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:18,673 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:18,673 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:18,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:18,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,676 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-12-13 17:37:18,678 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:18,678 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:18,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-12-13 17:37:18,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,693 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-12-13 17:37:18,695 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 17:37:18,695 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:18,758 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 17:37:18,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:18,762 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:37:18,762 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:37:18,762 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:37:18,762 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:37:18,762 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 17:37:18,762 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,762 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:37:18,762 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:37:18,762 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2022-12-13 17:37:18,762 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:37:18,762 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:37:18,763 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 17:37:18,765 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 17:37:18,766 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 17:37:18,767 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 17:37:18,768 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 17:37:18,770 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 17:37:18,771 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 17:37:18,772 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 17:37:18,805 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:37:18,805 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 17:37:18,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,806 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-12-13 17:37:18,808 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 17:37:18,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:18,819 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:18,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:18,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:18,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:18,820 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:18,820 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:18,821 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:18,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-12-13 17:37:18,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,825 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-12-13 17:37:18,827 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 17:37:18,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:18,837 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:18,837 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:18,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:18,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:18,838 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:18,838 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:18,839 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:18,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2022-12-13 17:37:18,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,843 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-12-13 17:37:18,845 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 17:37:18,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:18,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:18,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:18,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:18,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:18,857 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:18,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:18,858 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:18,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2022-12-13 17:37:18,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,861 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-12-13 17:37:18,864 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 17:37:18,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:18,874 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:18,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:18,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:18,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:18,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:18,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:18,877 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:18,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2022-12-13 17:37:18,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,880 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-12-13 17:37:18,882 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 17:37:18,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:18,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:18,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:18,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:18,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:18,893 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:18,893 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:18,894 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:18,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-12-13 17:37:18,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,898 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-12-13 17:37:18,900 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 17:37:18,910 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:18,910 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:18,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:18,910 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:18,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:18,911 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:18,911 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:18,912 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:18,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:18,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,915 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-12-13 17:37:18,917 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 17:37:18,926 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:18,927 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:18,927 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:18,927 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:18,927 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:18,927 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:18,927 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:18,929 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:18,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:18,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,932 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-12-13 17:37:18,934 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 17:37:18,945 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:18,945 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:18,945 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:18,945 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:18,945 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:18,946 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:18,946 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:18,948 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 17:37:18,949 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 17:37:18,949 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 17:37:18,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:18,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:18,951 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:18,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-12-13 17:37:18,952 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 17:37:18,952 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 17:37:18,952 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 17:37:18,952 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-12-13 17:37:18,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2022-12-13 17:37:18,955 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 17:37:18,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:19,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:19,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 17:37:19,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:19,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2022-12-13 17:37:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:19,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:37:19,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:19,294 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 17:37:19,295 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-12-13 17:37:19,295 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 17:37:19,421 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2022-12-13 17:37:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-12-13 17:37:19,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 17:37:19,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-12-13 17:37:19,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2022-12-13 17:37:19,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:19,423 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 17:37:19,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:19,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 17:37:19,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:19,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:37:19,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:19,748 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 17:37:19,749 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-12-13 17:37:19,749 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 17:37:19,860 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 698 states and 973 transitions. Complement of second has 26 states. [2022-12-13 17:37:19,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-12-13 17:37:19,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 17:37:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-12-13 17:37:19,862 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2022-12-13 17:37:19,862 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:19,862 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 17:37:19,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:19,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 17:37:19,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:20,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:37:20,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:20,154 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 17:37:20,155 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 5 loop predicates [2022-12-13 17:37:20,155 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 17:37:20,277 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 587 states and 803 transitions. Complement of second has 25 states. [2022-12-13 17:37:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-12-13 17:37:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 17:37:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2022-12-13 17:37:20,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2022-12-13 17:37:20,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:20,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2022-12-13 17:37:20,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:20,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2022-12-13 17:37:20,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:20,280 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 587 states and 803 transitions. [2022-12-13 17:37:20,287 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2022-12-13 17:37:20,295 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 587 states to 476 states and 676 transitions. [2022-12-13 17:37:20,295 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 215 [2022-12-13 17:37:20,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2022-12-13 17:37:20,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 476 states and 676 transitions. [2022-12-13 17:37:20,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:37:20,296 INFO L218 hiAutomatonCegarLoop]: Abstraction has 476 states and 676 transitions. [2022-12-13 17:37:20,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states and 676 transitions. [2022-12-13 17:37:20,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 401. [2022-12-13 17:37:20,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 267 states have (on average 1.2621722846441947) internal successors, (337), 290 states have internal predecessors, (337), 78 states have call successors, (81), 60 states have call predecessors, (81), 56 states have return successors, (126), 50 states have call predecessors, (126), 76 states have call successors, (126) [2022-12-13 17:37:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 544 transitions. [2022-12-13 17:37:20,327 INFO L240 hiAutomatonCegarLoop]: Abstraction has 401 states and 544 transitions. [2022-12-13 17:37:20,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:37:20,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 17:37:20,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2022-12-13 17:37:20,328 INFO L87 Difference]: Start difference. First operand 401 states and 544 transitions. Second operand has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 16 states have call successors, (21), 7 states have call predecessors, (21), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2022-12-13 17:37:20,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:37:20,744 INFO L93 Difference]: Finished difference Result 499 states and 693 transitions. [2022-12-13 17:37:20,744 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 499 states and 693 transitions. [2022-12-13 17:37:20,750 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 17:37:20,756 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 499 states to 457 states and 645 transitions. [2022-12-13 17:37:20,756 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 256 [2022-12-13 17:37:20,756 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2022-12-13 17:37:20,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 457 states and 645 transitions. [2022-12-13 17:37:20,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:37:20,757 INFO L218 hiAutomatonCegarLoop]: Abstraction has 457 states and 645 transitions. [2022-12-13 17:37:20,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states and 645 transitions. [2022-12-13 17:37:20,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 414. [2022-12-13 17:37:20,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 269 states have (on average 1.20817843866171) internal successors, (325), 298 states have internal predecessors, (325), 85 states have call successors, (87), 57 states have call predecessors, (87), 60 states have return successors, (161), 58 states have call predecessors, (161), 83 states have call successors, (161) [2022-12-13 17:37:20,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 573 transitions. [2022-12-13 17:37:20,775 INFO L240 hiAutomatonCegarLoop]: Abstraction has 414 states and 573 transitions. [2022-12-13 17:37:20,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 17:37:20,776 INFO L428 stractBuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2022-12-13 17:37:20,776 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 17:37:20,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 414 states and 573 transitions. [2022-12-13 17:37:20,777 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 17:37:20,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:37:20,778 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:37:20,779 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:20,780 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [12, 11, 10, 10, 9, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2] [2022-12-13 17:37:20,780 INFO L748 eck$LassoCheckResult]: Stem: 5360#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5319#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 5320#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5368#$Ultimate##0 ~n := #in~n; 5421#L10 assume !(~n < 1); 5420#L12 assume !(1 == ~n); 5416#L15 call #t~ret4 := fibo2(~n - 1);< 5419#$Ultimate##0 ~n := #in~n; 5418#L20 assume !(~n < 1); 5417#L22 assume !(1 == ~n); 5412#L25 call #t~ret6 := fibo1(~n - 1);< 5415#$Ultimate##0 ~n := #in~n; 5414#L10 assume !(~n < 1); 5413#L12 assume !(1 == ~n); 5408#L15 call #t~ret4 := fibo2(~n - 1);< 5411#$Ultimate##0 ~n := #in~n; 5410#L20 assume !(~n < 1); 5409#L22 assume !(1 == ~n); 5404#L25 call #t~ret6 := fibo1(~n - 1);< 5407#$Ultimate##0 ~n := #in~n; 5406#L10 assume !(~n < 1); 5405#L12 assume !(1 == ~n); 5380#L15 call #t~ret4 := fibo2(~n - 1);< 5382#$Ultimate##0 ~n := #in~n; 5397#L20 assume !(~n < 1); 5398#L22 assume !(1 == ~n); 5325#L25 call #t~ret6 := fibo1(~n - 1);< 5399#$Ultimate##0 ~n := #in~n; 5400#L10 assume !(~n < 1); 5513#L12 assume 1 == ~n;#res := 1; 5514#fibo1FINAL assume true; 5503#fibo1EXIT >#46#return; 5486#L25-1 call #t~ret7 := fibo1(~n - 2);< 5498#$Ultimate##0 ~n := #in~n; 5490#L10 assume !(~n < 1); 5488#L12 assume !(1 == ~n); 5474#L15 call #t~ret4 := fibo2(~n - 1);< 5483#$Ultimate##0 ~n := #in~n; 5481#L20 assume !(~n < 1); 5478#L22 assume 1 == ~n;#res := 1; 5479#fibo2FINAL assume true; 5581#fibo2EXIT >#50#return; 5355#L15-1 [2022-12-13 17:37:20,780 INFO L750 eck$LassoCheckResult]: Loop: 5355#L15-1 call #t~ret5 := fibo2(~n - 2);< 5541#$Ultimate##0 ~n := #in~n; 5299#L20 assume !(~n < 1); 5357#L22 assume !(1 == ~n); 5523#L25 call #t~ret6 := fibo1(~n - 1);< 5567#$Ultimate##0 ~n := #in~n; 5586#L10 assume !(~n < 1); 5584#L12 assume 1 == ~n;#res := 1; 5585#fibo1FINAL assume true; 5614#fibo1EXIT >#46#return; 5589#L25-1 call #t~ret7 := fibo1(~n - 2);< 5613#$Ultimate##0 ~n := #in~n; 5607#L10 assume !(~n < 1); 5606#L12 assume !(1 == ~n); 5296#L15 call #t~ret4 := fibo2(~n - 1);< 5295#$Ultimate##0 ~n := #in~n; 5299#L20 assume !(~n < 1); 5357#L22 assume !(1 == ~n); 5523#L25 call #t~ret6 := fibo1(~n - 1);< 5567#$Ultimate##0 ~n := #in~n; 5586#L10 assume !(~n < 1); 5584#L12 assume !(1 == ~n); 5298#L15 call #t~ret4 := fibo2(~n - 1);< 5295#$Ultimate##0 ~n := #in~n; 5299#L20 assume !(~n < 1); 5357#L22 assume !(1 == ~n); 5523#L25 call #t~ret6 := fibo1(~n - 1);< 5567#$Ultimate##0 ~n := #in~n; 5586#L10 assume !(~n < 1); 5584#L12 assume 1 == ~n;#res := 1; 5585#fibo1FINAL assume true; 5614#fibo1EXIT >#46#return; 5589#L25-1 call #t~ret7 := fibo1(~n - 2);< 5613#$Ultimate##0 ~n := #in~n; 5607#L10 assume !(~n < 1); 5606#L12 assume !(1 == ~n); 5296#L15 call #t~ret4 := fibo2(~n - 1);< 5295#$Ultimate##0 ~n := #in~n; 5300#L20 assume !(~n < 1); 5618#L22 assume !(1 == ~n); 5616#L25 call #t~ret6 := fibo1(~n - 1);< 5617#$Ultimate##0 ~n := #in~n; 5623#L10 assume !(~n < 1); 5622#L12 assume 1 == ~n;#res := 1; 5620#fibo1FINAL assume true; 5615#fibo1EXIT >#46#return; 5609#L25-1 call #t~ret7 := fibo1(~n - 2);< 5612#$Ultimate##0 ~n := #in~n; 5650#L10 assume ~n < 1;#res := 0; 5646#fibo1FINAL assume true; 5608#fibo1EXIT >#48#return; 5560#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5605#fibo2FINAL assume true; 5578#fibo2EXIT >#50#return; 5355#L15-1 call #t~ret5 := fibo2(~n - 2);< 5541#$Ultimate##0 ~n := #in~n; 5591#L20 assume ~n < 1;#res := 0; 5588#fibo2FINAL assume true; 5576#fibo2EXIT >#52#return; 5540#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5621#fibo1FINAL assume true; 5610#fibo1EXIT >#48#return; 5560#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5605#fibo2FINAL assume true; 5578#fibo2EXIT >#50#return; 5353#L15-1 call #t~ret5 := fibo2(~n - 2);< 5541#$Ultimate##0 ~n := #in~n; 5591#L20 assume ~n < 1;#res := 0; 5588#fibo2FINAL assume true; 5576#fibo2EXIT >#52#return; 5538#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5565#fibo1FINAL assume true; 5564#fibo1EXIT >#46#return; 5556#L25-1 call #t~ret7 := fibo1(~n - 2);< 5562#$Ultimate##0 ~n := #in~n; 5630#L10 assume !(~n < 1); 5629#L12 assume !(1 == ~n); 5547#L15 call #t~ret4 := fibo2(~n - 1);< 5573#$Ultimate##0 ~n := #in~n; 5572#L20 assume !(~n < 1); 5569#L22 assume !(1 == ~n); 5559#L25 call #t~ret6 := fibo1(~n - 1);< 5562#$Ultimate##0 ~n := #in~n; 5630#L10 assume !(~n < 1); 5629#L12 assume 1 == ~n;#res := 1; 5625#fibo1FINAL assume true; 5628#fibo1EXIT >#46#return; 5554#L25-1 call #t~ret7 := fibo1(~n - 2);< 5611#$Ultimate##0 ~n := #in~n; 5626#L10 assume !(~n < 1); 5624#L12 assume !(1 == ~n); 5548#L15 call #t~ret4 := fibo2(~n - 1);< 5573#$Ultimate##0 ~n := #in~n; 5572#L20 assume !(~n < 1); 5569#L22 assume !(1 == ~n); 5559#L25 call #t~ret6 := fibo1(~n - 1);< 5562#$Ultimate##0 ~n := #in~n; 5630#L10 assume !(~n < 1); 5629#L12 assume 1 == ~n;#res := 1; 5625#fibo1FINAL assume true; 5628#fibo1EXIT >#46#return; 5554#L25-1 call #t~ret7 := fibo1(~n - 2);< 5611#$Ultimate##0 ~n := #in~n; 5626#L10 assume ~n < 1;#res := 0; 5627#fibo1FINAL assume true; 5553#fibo1EXIT >#48#return; 5560#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5605#fibo2FINAL assume true; 5578#fibo2EXIT >#50#return; 5355#L15-1 call #t~ret5 := fibo2(~n - 2);< 5541#$Ultimate##0 ~n := #in~n; 5591#L20 assume ~n < 1;#res := 0; 5588#fibo2FINAL assume true; 5576#fibo2EXIT >#52#return; 5540#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5621#fibo1FINAL assume true; 5610#fibo1EXIT >#48#return; 5560#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5605#fibo2FINAL assume true; 5578#fibo2EXIT >#50#return; 5353#L15-1 call #t~ret5 := fibo2(~n - 2);< 5541#$Ultimate##0 ~n := #in~n; 5591#L20 assume ~n < 1;#res := 0; 5588#fibo2FINAL assume true; 5576#fibo2EXIT >#52#return; 5538#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5565#fibo1FINAL assume true; 5564#fibo1EXIT >#48#return; 5561#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5633#fibo2FINAL assume true; 5546#fibo2EXIT >#50#return; 5355#L15-1 [2022-12-13 17:37:20,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:20,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1816161101, now seen corresponding path program 1 times [2022-12-13 17:37:20,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:20,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421274300] [2022-12-13 17:37:20,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:20,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:20,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 17:37:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 17:37:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:37:20,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:37:20,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421274300] [2022-12-13 17:37:20,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421274300] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:37:20,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062024417] [2022-12-13 17:37:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:20,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:37:20,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:20,924 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:37:20,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-12-13 17:37:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:20,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 17:37:20,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:37:21,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:37:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:37:21,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062024417] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:37:21,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:37:21,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2022-12-13 17:37:21,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558289276] [2022-12-13 17:37:21,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:37:21,122 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 17:37:21,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash 788355035, now seen corresponding path program 1 times [2022-12-13 17:37:21,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:21,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481988751] [2022-12-13 17:37:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 17:37:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:37:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:37:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:37:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:37:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 17:37:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 17:37:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:37:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:37:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:37:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 17:37:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 2 proven. 76 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2022-12-13 17:37:21,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:37:21,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481988751] [2022-12-13 17:37:21,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481988751] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:37:21,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198748379] [2022-12-13 17:37:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:21,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:37:21,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:21,291 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:37:21,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-12-13 17:37:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 17:37:21,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 107 proven. 1 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2022-12-13 17:37:21,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:37:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 2 proven. 76 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2022-12-13 17:37:21,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198748379] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:37:21,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:37:21,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-12-13 17:37:21,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610869649] [2022-12-13 17:37:21,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:37:21,535 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 17:37:21,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:37:21,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 17:37:21,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-12-13 17:37:21,535 INFO L87 Difference]: Start difference. First operand 414 states and 573 transitions. cyclomatic complexity: 166 Second operand has 19 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 13 states have internal predecessors, (41), 8 states have call successors, (10), 8 states have call predecessors, (10), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 17:37:21,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:37:21,723 INFO L93 Difference]: Finished difference Result 436 states and 604 transitions. [2022-12-13 17:37:21,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 436 states and 604 transitions. [2022-12-13 17:37:21,733 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 17:37:21,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 436 states to 431 states and 597 transitions. [2022-12-13 17:37:21,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 231 [2022-12-13 17:37:21,738 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 231 [2022-12-13 17:37:21,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 431 states and 597 transitions. [2022-12-13 17:37:21,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:37:21,738 INFO L218 hiAutomatonCegarLoop]: Abstraction has 431 states and 597 transitions. [2022-12-13 17:37:21,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states and 597 transitions. [2022-12-13 17:37:21,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 425. [2022-12-13 17:37:21,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 276 states have (on average 1.2028985507246377) internal successors, (332), 304 states have internal predecessors, (332), 89 states have call successors, (92), 60 states have call predecessors, (92), 60 states have return successors, (152), 60 states have call predecessors, (152), 87 states have call successors, (152) [2022-12-13 17:37:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 576 transitions. [2022-12-13 17:37:21,752 INFO L240 hiAutomatonCegarLoop]: Abstraction has 425 states and 576 transitions. [2022-12-13 17:37:21,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 17:37:21,753 INFO L428 stractBuchiCegarLoop]: Abstraction has 425 states and 576 transitions. [2022-12-13 17:37:21,753 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 17:37:21,753 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 425 states and 576 transitions. [2022-12-13 17:37:21,756 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 17:37:21,756 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:37:21,756 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:37:21,758 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:21,758 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2022-12-13 17:37:21,758 INFO L748 eck$LassoCheckResult]: Stem: 7750#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7705#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 7706#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 7752#$Ultimate##0 ~n := #in~n; 7821#L10 assume !(~n < 1); 7820#L12 assume !(1 == ~n); 7816#L15 call #t~ret4 := fibo2(~n - 1);< 7819#$Ultimate##0 ~n := #in~n; 7818#L20 assume !(~n < 1); 7817#L22 assume !(1 == ~n); 7812#L25 call #t~ret6 := fibo1(~n - 1);< 7815#$Ultimate##0 ~n := #in~n; 7814#L10 assume !(~n < 1); 7813#L12 assume !(1 == ~n); 7808#L15 call #t~ret4 := fibo2(~n - 1);< 7811#$Ultimate##0 ~n := #in~n; 7810#L20 assume !(~n < 1); 7809#L22 assume !(1 == ~n); 7804#L25 call #t~ret6 := fibo1(~n - 1);< 7807#$Ultimate##0 ~n := #in~n; 7806#L10 assume !(~n < 1); 7805#L12 assume !(1 == ~n); 7793#L15 call #t~ret4 := fibo2(~n - 1);< 7803#$Ultimate##0 ~n := #in~n; 7802#L20 assume !(~n < 1); 7798#L22 assume !(1 == ~n); 7722#L25 call #t~ret6 := fibo1(~n - 1);< 7794#$Ultimate##0 ~n := #in~n; 7800#L10 assume !(~n < 1); 7906#L12 assume !(1 == ~n); 7865#L15 call #t~ret4 := fibo2(~n - 1);< 7908#$Ultimate##0 ~n := #in~n; 7912#L20 assume !(~n < 1); 7910#L22 assume 1 == ~n;#res := 1; 7909#fibo2FINAL assume true; 7907#fibo2EXIT >#50#return; 7904#L15-1 call #t~ret5 := fibo2(~n - 2);< 7905#$Ultimate##0 ~n := #in~n; 7913#L20 assume ~n < 1;#res := 0; 7911#fibo2FINAL assume true; 7903#fibo2EXIT >#52#return; 7901#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7900#fibo1FINAL assume true; 7898#fibo1EXIT >#46#return; 7881#L25-1 call #t~ret7 := fibo1(~n - 2);< 7888#$Ultimate##0 ~n := #in~n; 7969#L10 assume ~n < 1;#res := 0; 7968#fibo1FINAL assume true; 7966#fibo1EXIT >#48#return; 7964#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7963#fibo2FINAL assume true; 7956#fibo2EXIT >#50#return; 7693#L15-1 call #t~ret5 := fibo2(~n - 2);< 7954#$Ultimate##0 [2022-12-13 17:37:21,758 INFO L750 eck$LassoCheckResult]: Loop: 7954#$Ultimate##0 ~n := #in~n; 7955#L20 assume !(~n < 1); 7918#L22 assume !(1 == ~n); 7688#L25 call #t~ret6 := fibo1(~n - 1);< 7897#$Ultimate##0 ~n := #in~n; 7893#L10 assume !(~n < 1); 7894#L12 assume !(1 == ~n); 7691#L15 call #t~ret4 := fibo2(~n - 1);< 7960#$Ultimate##0 ~n := #in~n; 7955#L20 assume !(~n < 1); 7918#L22 assume !(1 == ~n); 7688#L25 call #t~ret6 := fibo1(~n - 1);< 7897#$Ultimate##0 ~n := #in~n; 7893#L10 assume !(~n < 1); 7894#L12 assume !(1 == ~n); 7691#L15 call #t~ret4 := fibo2(~n - 1);< 7960#$Ultimate##0 ~n := #in~n; 7961#L20 assume !(~n < 1); 7999#L22 assume 1 == ~n;#res := 1; 7996#fibo2FINAL assume true; 7991#fibo2EXIT >#50#return; 7695#L15-1 call #t~ret5 := fibo2(~n - 2);< 7954#$Ultimate##0 ~n := #in~n; 7959#L20 assume ~n < 1;#res := 0; 7988#fibo2FINAL assume true; 7986#fibo2EXIT >#52#return; 7953#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7948#fibo1FINAL assume true; 7936#fibo1EXIT >#46#return; 7941#L25-1 call #t~ret7 := fibo1(~n - 2);< 7945#$Ultimate##0 ~n := #in~n; 8003#L10 assume !(~n < 1); 8000#L12 assume !(1 == ~n); 7725#L15 call #t~ret4 := fibo2(~n - 1);< 7982#$Ultimate##0 ~n := #in~n; 7981#L20 assume !(~n < 1); 7978#L22 assume !(1 == ~n); 7939#L25 call #t~ret6 := fibo1(~n - 1);< 7945#$Ultimate##0 ~n := #in~n; 8003#L10 assume !(~n < 1); 8000#L12 assume !(1 == ~n); 7725#L15 call #t~ret4 := fibo2(~n - 1);< 7982#$Ultimate##0 ~n := #in~n; 7981#L20 assume !(~n < 1); 7978#L22 assume 1 == ~n;#res := 1; 7979#fibo2FINAL assume true; 7990#fibo2EXIT >#50#return; 7695#L15-1 call #t~ret5 := fibo2(~n - 2);< 7954#$Ultimate##0 ~n := #in~n; 7959#L20 assume ~n < 1;#res := 0; 7988#fibo2FINAL assume true; 7986#fibo2EXIT >#52#return; 7953#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7948#fibo1FINAL assume true; 7936#fibo1EXIT >#46#return; 7941#L25-1 call #t~ret7 := fibo1(~n - 2);< 7945#$Ultimate##0 ~n := #in~n; 8003#L10 assume ~n < 1;#res := 0; 8004#fibo1FINAL assume true; 7965#fibo1EXIT >#48#return; 7704#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7729#fibo2FINAL assume true; 7744#fibo2EXIT >#50#return; 7695#L15-1 call #t~ret5 := fibo2(~n - 2);< 7954#$Ultimate##0 ~n := #in~n; 7959#L20 assume ~n < 1;#res := 0; 7988#fibo2FINAL assume true; 7986#fibo2EXIT >#52#return; 7953#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7948#fibo1FINAL assume true; 7936#fibo1EXIT >#48#return; 7704#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7729#fibo2FINAL assume true; 7744#fibo2EXIT >#50#return; 7695#L15-1 call #t~ret5 := fibo2(~n - 2);< 7954#$Ultimate##0 [2022-12-13 17:37:21,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:21,759 INFO L85 PathProgramCache]: Analyzing trace with hash -199100099, now seen corresponding path program 1 times [2022-12-13 17:37:21,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:21,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605780805] [2022-12-13 17:37:21,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:21,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 17:37:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:37:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:37:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 54 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 17:37:21,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:37:21,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605780805] [2022-12-13 17:37:21,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605780805] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:37:21,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659049748] [2022-12-13 17:37:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:21,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:37:21,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:21,984 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:37:21,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-12-13 17:37:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 17:37:22,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 17:37:22,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:37:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 55 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 17:37:22,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659049748] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:37:22,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:37:22,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 24 [2022-12-13 17:37:22,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48700326] [2022-12-13 17:37:22,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:37:22,271 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 17:37:22,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:22,272 INFO L85 PathProgramCache]: Analyzing trace with hash 688787707, now seen corresponding path program 1 times [2022-12-13 17:37:22,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:22,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145136910] [2022-12-13 17:37:22,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:22,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 17:37:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:37:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:37:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:37:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:37:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 17:37:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,429 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-12-13 17:37:22,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:37:22,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145136910] [2022-12-13 17:37:22,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145136910] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:37:22,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660178139] [2022-12-13 17:37:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:22,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:37:22,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:22,430 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:37:22,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-12-13 17:37:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:22,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 17:37:22,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:22,532 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 17:37:22,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:37:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 17:37:22,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660178139] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:37:22,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:37:22,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-12-13 17:37:22,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051671765] [2022-12-13 17:37:22,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:37:22,792 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 17:37:22,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:37:22,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 17:37:22,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2022-12-13 17:37:22,792 INFO L87 Difference]: Start difference. First operand 425 states and 576 transitions. cyclomatic complexity: 158 Second operand has 24 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 18 states have internal predecessors, (49), 12 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-13 17:37:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:37:23,071 INFO L93 Difference]: Finished difference Result 456 states and 630 transitions. [2022-12-13 17:37:23,071 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 456 states and 630 transitions. [2022-12-13 17:37:23,075 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 17:37:23,078 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 456 states to 456 states and 630 transitions. [2022-12-13 17:37:23,078 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 251 [2022-12-13 17:37:23,078 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 251 [2022-12-13 17:37:23,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 456 states and 630 transitions. [2022-12-13 17:37:23,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:37:23,079 INFO L218 hiAutomatonCegarLoop]: Abstraction has 456 states and 630 transitions. [2022-12-13 17:37:23,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states and 630 transitions. [2022-12-13 17:37:23,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 438. [2022-12-13 17:37:23,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 284 states have (on average 1.1971830985915493) internal successors, (340), 314 states have internal predecessors, (340), 90 states have call successors, (93), 61 states have call predecessors, (93), 64 states have return successors, (159), 62 states have call predecessors, (159), 88 states have call successors, (159) [2022-12-13 17:37:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 592 transitions. [2022-12-13 17:37:23,089 INFO L240 hiAutomatonCegarLoop]: Abstraction has 438 states and 592 transitions. [2022-12-13 17:37:23,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 17:37:23,089 INFO L428 stractBuchiCegarLoop]: Abstraction has 438 states and 592 transitions. [2022-12-13 17:37:23,089 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-12-13 17:37:23,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 438 states and 592 transitions. [2022-12-13 17:37:23,093 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 17:37:23,093 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:37:23,093 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:37:23,094 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:23,094 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:23,094 INFO L748 eck$LassoCheckResult]: Stem: 9699#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 9656#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 9657#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 9706#$Ultimate##0 ~n := #in~n; 9769#L10 assume !(~n < 1); 9768#L12 assume !(1 == ~n); 9764#L15 call #t~ret4 := fibo2(~n - 1);< 9767#$Ultimate##0 ~n := #in~n; 9766#L20 assume !(~n < 1); 9765#L22 assume !(1 == ~n); 9760#L25 call #t~ret6 := fibo1(~n - 1);< 9763#$Ultimate##0 ~n := #in~n; 9762#L10 assume !(~n < 1); 9761#L12 assume !(1 == ~n); 9756#L15 call #t~ret4 := fibo2(~n - 1);< 9759#$Ultimate##0 ~n := #in~n; 9758#L20 assume !(~n < 1); 9757#L22 assume !(1 == ~n); 9752#L25 call #t~ret6 := fibo1(~n - 1);< 9755#$Ultimate##0 ~n := #in~n; 9754#L10 assume !(~n < 1); 9753#L12 assume !(1 == ~n); 9738#L15 call #t~ret4 := fibo2(~n - 1);< 9750#$Ultimate##0 ~n := #in~n; 9749#L20 assume !(~n < 1); 9745#L22 assume !(1 == ~n); 9677#L25 call #t~ret6 := fibo1(~n - 1);< 9739#$Ultimate##0 ~n := #in~n; 9747#L10 assume !(~n < 1); 9850#L12 assume !(1 == ~n); 9804#L15 call #t~ret4 := fibo2(~n - 1);< 9858#$Ultimate##0 ~n := #in~n; 9863#L20 assume !(~n < 1); 9862#L22 assume 1 == ~n;#res := 1; 9861#fibo2FINAL assume true; 9857#fibo2EXIT >#50#return; 9854#L15-1 call #t~ret5 := fibo2(~n - 2);< 9855#$Ultimate##0 ~n := #in~n; 9859#L20 assume ~n < 1;#res := 0; 9856#fibo2FINAL assume true; 9853#fibo2EXIT >#52#return; 9852#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 9851#fibo1FINAL assume true; 9848#fibo1EXIT >#46#return; 9837#L25-1 call #t~ret7 := fibo1(~n - 2);< 9843#$Ultimate##0 ~n := #in~n; 9939#L10 assume !(~n < 1); 9938#L12 assume 1 == ~n;#res := 1; 9936#fibo1FINAL assume true; 9934#fibo1EXIT >#48#return; 9932#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 9923#fibo2FINAL assume true; 9917#fibo2EXIT >#50#return; 9866#L15-1 call #t~ret5 := fibo2(~n - 2);< 9873#$Ultimate##0 [2022-12-13 17:37:23,094 INFO L750 eck$LassoCheckResult]: Loop: 9873#$Ultimate##0 ~n := #in~n; 9872#L20 assume !(~n < 1); 9865#L22 assume !(1 == ~n); 9638#L25 call #t~ret6 := fibo1(~n - 1);< 9937#$Ultimate##0 ~n := #in~n; 9999#L10 assume !(~n < 1); 9998#L12 assume !(1 == ~n); 9871#L15 call #t~ret4 := fibo2(~n - 1);< 9875#$Ultimate##0 ~n := #in~n; 9876#L20 assume !(~n < 1); 9986#L22 assume !(1 == ~n); 9975#L25 call #t~ret6 := fibo1(~n - 1);< 9984#$Ultimate##0 ~n := #in~n; 9996#L10 assume !(~n < 1); 9994#L12 assume 1 == ~n;#res := 1; 9993#fibo1FINAL assume true; 9983#fibo1EXIT >#46#return; 9956#L25-1 call #t~ret7 := fibo1(~n - 2);< 9958#$Ultimate##0 ~n := #in~n; 9979#L10 assume ~n < 1;#res := 0; 9980#fibo1FINAL assume true; 9989#fibo1EXIT >#48#return; 9988#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 9985#fibo2FINAL assume true; 9959#fibo2EXIT >#50#return; 9868#L15-1 call #t~ret5 := fibo2(~n - 2);< 9873#$Ultimate##0 [2022-12-13 17:37:23,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:23,094 INFO L85 PathProgramCache]: Analyzing trace with hash -430230985, now seen corresponding path program 1 times [2022-12-13 17:37:23,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:23,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707961363] [2022-12-13 17:37:23,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:23,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:23,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:37:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:23,107 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:37:23,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:23,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1687498379, now seen corresponding path program 1 times [2022-12-13 17:37:23,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:23,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147840779] [2022-12-13 17:37:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:23,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:23,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:37:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:23,113 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:37:23,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash -496694229, now seen corresponding path program 1 times [2022-12-13 17:37:23,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:23,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14174773] [2022-12-13 17:37:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:23,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 17:37:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:23,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:23,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:23,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:37:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 17:37:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:23,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 17:37:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:23,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:23,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:37:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:23,277 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 55 proven. 71 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 17:37:23,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:37:23,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14174773] [2022-12-13 17:37:23,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14174773] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:37:23,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250968191] [2022-12-13 17:37:23,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:23,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:37:23,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:23,279 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:37:23,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-12-13 17:37:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:23,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 17:37:23,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 69 proven. 71 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 17:37:23,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:37:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 69 proven. 71 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 17:37:23,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250968191] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:37:23,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:37:23,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 21 [2022-12-13 17:37:23,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225141878] [2022-12-13 17:37:23,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:37:23,735 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:37:23,735 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:37:23,735 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:37:23,735 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:37:23,735 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 17:37:23,735 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:23,735 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:37:23,736 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:37:23,736 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2022-12-13 17:37:23,736 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:37:23,736 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:37:23,736 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 17:37:23,737 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 17:37:23,738 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 17:37:23,739 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 17:37:23,742 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 17:37:23,743 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 17:37:23,744 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 17:37:23,745 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 17:37:23,761 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:37:23,761 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 17:37:23,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:23,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:23,762 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:23,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-12-13 17:37:23,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:23,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:23,775 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:23,775 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:23,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2022-12-13 17:37:23,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:23,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:23,778 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:23,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-12-13 17:37:23,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:23,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:23,791 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:23,791 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:23,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:23,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:23,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:23,794 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:23,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-12-13 17:37:23,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:23,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:23,809 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:23,809 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:23,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2022-12-13 17:37:23,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:23,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:23,812 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:23,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-12-13 17:37:23,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:23,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:23,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2022-12-13 17:37:23,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:23,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:23,832 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:23,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-12-13 17:37:23,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 17:37:23,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:23,912 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 17:37:23,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2022-12-13 17:37:23,915 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:37:23,915 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:37:23,915 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:37:23,915 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:37:23,915 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 17:37:23,915 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:23,915 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:37:23,915 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:37:23,915 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2022-12-13 17:37:23,915 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:37:23,915 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:37:23,916 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 17:37:23,918 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 17:37:23,919 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 17:37:23,922 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 17:37:23,923 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 17:37:23,924 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 17:37:23,925 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 17:37:23,926 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 17:37:23,944 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:37:23,944 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 17:37:23,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:23,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:23,944 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:23,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-12-13 17:37:23,946 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 17:37:23,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:23,956 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:23,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:23,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:23,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:23,957 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:23,957 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:23,958 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:23,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2022-12-13 17:37:23,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:23,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:23,961 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:23,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-12-13 17:37:23,963 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 17:37:23,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:23,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:23,973 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:23,973 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:23,973 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:23,973 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:23,973 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:23,975 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:23,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2022-12-13 17:37:23,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:23,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:23,978 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:23,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-12-13 17:37:23,980 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 17:37:23,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:23,990 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:23,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:23,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:23,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:23,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:23,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:23,993 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 17:37:23,996 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 17:37:23,996 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 17:37:23,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:23,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:23,997 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:23,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-12-13 17:37:23,999 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 17:37:23,999 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 17:37:23,999 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 17:37:23,999 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-12-13 17:37:24,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2022-12-13 17:37:24,002 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 17:37:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:24,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 17:37:24,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:24,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2022-12-13 17:37:24,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:24,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 17:37:24,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:37:24,372 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2022-12-13 17:37:24,372 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 438 states and 592 transitions. cyclomatic complexity: 161 Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 17:37:24,555 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 438 states and 592 transitions. cyclomatic complexity: 161. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Result 1074 states and 1416 transitions. Complement of second has 16 states. [2022-12-13 17:37:24,555 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 17:37:24,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 17:37:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 42 transitions. [2022-12-13 17:37:24,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 42 transitions. Stem has 54 letters. Loop has 26 letters. [2022-12-13 17:37:24,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:24,557 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 17:37:24,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:24,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 17:37:24,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:24,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 17:37:24,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:37:24,946 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2022-12-13 17:37:24,946 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 438 states and 592 transitions. cyclomatic complexity: 161 Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 17:37:25,212 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 438 states and 592 transitions. cyclomatic complexity: 161. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Result 1526 states and 2109 transitions. Complement of second has 43 states. [2022-12-13 17:37:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2022-12-13 17:37:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 17:37:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 58 transitions. [2022-12-13 17:37:25,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 58 transitions. Stem has 54 letters. Loop has 26 letters. [2022-12-13 17:37:25,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:25,215 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 17:37:25,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:25,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 17:37:25,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:25,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 17:37:25,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:25,596 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:37:25,596 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 10 loop predicates [2022-12-13 17:37:25,596 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 438 states and 592 transitions. cyclomatic complexity: 161 Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 17:37:25,756 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 438 states and 592 transitions. cyclomatic complexity: 161. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Result 813 states and 1045 transitions. Complement of second has 15 states. [2022-12-13 17:37:25,756 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 17:37:25,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 17:37:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 46 transitions. [2022-12-13 17:37:25,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 46 transitions. Stem has 54 letters. Loop has 26 letters. [2022-12-13 17:37:25,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:25,758 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 17:37:25,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:25,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 17:37:25,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:26,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 17:37:26,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:37:26,121 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2022-12-13 17:37:26,121 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 438 states and 592 transitions. cyclomatic complexity: 161 Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 17:37:26,441 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 438 states and 592 transitions. cyclomatic complexity: 161. Second operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Result 1390 states and 1900 transitions. Complement of second has 48 states. [2022-12-13 17:37:26,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 11 states 2 stem states 8 non-accepting loop states 1 accepting loop states [2022-12-13 17:37:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-12-13 17:37:26,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 62 transitions. [2022-12-13 17:37:26,442 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 62 transitions. Stem has 54 letters. Loop has 26 letters. [2022-12-13 17:37:26,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:26,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 62 transitions. Stem has 80 letters. Loop has 26 letters. [2022-12-13 17:37:26,443 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:26,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 11 states and 62 transitions. Stem has 54 letters. Loop has 52 letters. [2022-12-13 17:37:26,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:26,444 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1390 states and 1900 transitions. [2022-12-13 17:37:26,452 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 120 [2022-12-13 17:37:26,458 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1390 states to 818 states and 1234 transitions. [2022-12-13 17:37:26,458 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 287 [2022-12-13 17:37:26,458 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 305 [2022-12-13 17:37:26,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 818 states and 1234 transitions. [2022-12-13 17:37:26,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:37:26,459 INFO L218 hiAutomatonCegarLoop]: Abstraction has 818 states and 1234 transitions. [2022-12-13 17:37:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states and 1234 transitions. [2022-12-13 17:37:26,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 568. [2022-12-13 17:37:26,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 367 states have (on average 1.2043596730245232) internal successors, (442), 393 states have internal predecessors, (442), 121 states have call successors, (124), 79 states have call predecessors, (124), 80 states have return successors, (196), 95 states have call predecessors, (196), 119 states have call successors, (196) [2022-12-13 17:37:26,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 762 transitions. [2022-12-13 17:37:26,483 INFO L240 hiAutomatonCegarLoop]: Abstraction has 568 states and 762 transitions. [2022-12-13 17:37:26,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:37:26,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 17:37:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-12-13 17:37:26,483 INFO L87 Difference]: Start difference. First operand 568 states and 762 transitions. Second operand has 21 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 14 states have internal predecessors, (46), 11 states have call successors, (17), 9 states have call predecessors, (17), 2 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2022-12-13 17:37:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:37:26,830 INFO L93 Difference]: Finished difference Result 497 states and 622 transitions. [2022-12-13 17:37:26,830 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 497 states and 622 transitions. [2022-12-13 17:37:26,835 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2022-12-13 17:37:26,838 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 497 states to 439 states and 560 transitions. [2022-12-13 17:37:26,838 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 277 [2022-12-13 17:37:26,838 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 305 [2022-12-13 17:37:26,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 439 states and 560 transitions. [2022-12-13 17:37:26,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:37:26,839 INFO L218 hiAutomatonCegarLoop]: Abstraction has 439 states and 560 transitions. [2022-12-13 17:37:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states and 560 transitions. [2022-12-13 17:37:26,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 403. [2022-12-13 17:37:26,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 259 states have (on average 1.16988416988417) internal successors, (303), 272 states have internal predecessors, (303), 85 states have call successors, (88), 55 states have call predecessors, (88), 59 states have return successors, (118), 75 states have call predecessors, (118), 81 states have call successors, (118) [2022-12-13 17:37:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 509 transitions. [2022-12-13 17:37:26,846 INFO L240 hiAutomatonCegarLoop]: Abstraction has 403 states and 509 transitions. [2022-12-13 17:37:26,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 17:37:26,847 INFO L428 stractBuchiCegarLoop]: Abstraction has 403 states and 509 transitions. [2022-12-13 17:37:26,847 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-12-13 17:37:26,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 403 states and 509 transitions. [2022-12-13 17:37:26,848 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2022-12-13 17:37:26,848 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 17:37:26,848 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 17:37:26,849 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:26,849 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:37:26,849 INFO L748 eck$LassoCheckResult]: Stem: 17790#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 17758#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 17759#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17794#$Ultimate##0 ~n := #in~n; 17933#L10 assume !(~n < 1); 17925#L12 assume !(1 == ~n); 17727#L15 call #t~ret4 := fibo2(~n - 1);< 17734#$Ultimate##0 ~n := #in~n; 17735#L20 assume !(~n < 1); 17726#L22 assume !(1 == ~n); 17728#L25 call #t~ret6 := fibo1(~n - 1);< 17768#$Ultimate##0 ~n := #in~n; 17873#L10 assume !(~n < 1); 17870#L12 assume !(1 == ~n); 17866#L15 call #t~ret4 := fibo2(~n - 1);< 17867#$Ultimate##0 ~n := #in~n; 17917#L20 assume !(~n < 1); 17913#L22 assume !(1 == ~n); 17899#L25 call #t~ret6 := fibo1(~n - 1);< 17900#$Ultimate##0 ~n := #in~n; 17945#L10 assume !(~n < 1); 17943#L12 assume !(1 == ~n); 17919#L15 call #t~ret4 := fibo2(~n - 1);< 17920#$Ultimate##0 ~n := #in~n; 17959#L20 assume !(~n < 1); 17958#L22 assume !(1 == ~n); 17773#L25 call #t~ret6 := fibo1(~n - 1);< 17896#$Ultimate##0 ~n := #in~n; 17981#L10 assume !(~n < 1); 17979#L12 assume !(1 == ~n); 17974#L15 call #t~ret4 := fibo2(~n - 1);< 17975#$Ultimate##0 ~n := #in~n; 18006#L20 assume !(~n < 1); 18003#L22 assume 1 == ~n;#res := 1; 18002#fibo2FINAL assume true; 17973#fibo2EXIT >#50#return; 17966#L15-1 call #t~ret5 := fibo2(~n - 2);< 17967#$Ultimate##0 ~n := #in~n; 18051#L20 assume ~n < 1;#res := 0; 18049#fibo2FINAL assume true; 17965#fibo2EXIT >#52#return; 17961#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17960#fibo1FINAL assume true; 17957#fibo1EXIT >#46#return; 17877#L25-1 call #t~ret7 := fibo1(~n - 2);< 17891#$Ultimate##0 ~n := #in~n; 17937#L10 assume !(~n < 1); 17935#L12 assume !(1 == ~n); 17833#L15 call #t~ret4 := fibo2(~n - 1);< 17839#$Ultimate##0 ~n := #in~n; 17838#L20 assume !(~n < 1); 17835#L22 assume !(1 == ~n); 17837#L25 call #t~ret6 := fibo1(~n - 1);< 18073#$Ultimate##0 ~n := #in~n; 18081#L10 assume !(~n < 1); 18078#L12 assume !(1 == ~n); 17777#L15 call #t~ret4 := fibo2(~n - 1);< 17787#$Ultimate##0 [2022-12-13 17:37:26,849 INFO L750 eck$LassoCheckResult]: Loop: 17787#$Ultimate##0 ~n := #in~n; 18094#L20 assume !(~n < 1); 18093#L22 assume !(1 == ~n); 17737#L25 call #t~ret6 := fibo1(~n - 1);< 18091#$Ultimate##0 ~n := #in~n; 18092#L10 assume !(~n < 1); 18084#L12 assume !(1 == ~n); 17776#L15 call #t~ret4 := fibo2(~n - 1);< 17787#$Ultimate##0 [2022-12-13 17:37:26,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:26,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1022485656, now seen corresponding path program 1 times [2022-12-13 17:37:26,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:26,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426181136] [2022-12-13 17:37:26,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:26,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:26,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 17:37:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:26,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 17:37:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:26,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 17:37:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 17:37:27,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:37:27,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426181136] [2022-12-13 17:37:27,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426181136] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 17:37:27,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639945929] [2022-12-13 17:37:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:27,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:37:27,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,001 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-12-13 17:37:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:27,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 17:37:27,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 77 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 17:37:27,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:37:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 77 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 17:37:27,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639945929] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:37:27,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 17:37:27,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 20 [2022-12-13 17:37:27,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946177727] [2022-12-13 17:37:27,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 17:37:27,230 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 17:37:27,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 3 times [2022-12-13 17:37:27,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:37:27,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122716905] [2022-12-13 17:37:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:37:27,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:37:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:27,233 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:37:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:37:27,235 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:37:27,294 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:37:27,294 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:37:27,294 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:37:27,294 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:37:27,294 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 17:37:27,294 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,294 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:37:27,295 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:37:27,295 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration8_Loop [2022-12-13 17:37:27,295 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:37:27,295 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:37:27,295 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 17:37:27,296 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 17:37:27,298 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 17:37:27,298 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 17:37:27,299 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 17:37:27,300 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 17:37:27,304 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 17:37:27,305 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 17:37:27,332 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:37:27,332 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 17:37:27,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,333 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-12-13 17:37:27,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:27,335 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:27,346 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:27,346 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:27,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:27,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,349 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2022-12-13 17:37:27,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:27,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:27,362 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:27,362 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:27,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:27,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,365 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2022-12-13 17:37:27,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:27,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:27,379 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:27,379 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:27,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2022-12-13 17:37:27,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,382 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-12-13 17:37:27,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:27,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:27,395 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:27,396 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:27,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2022-12-13 17:37:27,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,399 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-12-13 17:37:27,401 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:27,401 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:27,412 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 17:37:27,412 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 17:37:27,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:27,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,415 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-12-13 17:37:27,417 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 17:37:27,417 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:27,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2022-12-13 17:37:27,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,431 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2022-12-13 17:37:27,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 17:37:27,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 17:37:27,493 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 17:37:27,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:27,496 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 17:37:27,496 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 17:37:27,496 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 17:37:27,496 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 17:37:27,496 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 17:37:27,496 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,496 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 17:37:27,496 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 17:37:27,496 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration8_Loop [2022-12-13 17:37:27,496 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 17:37:27,496 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 17:37:27,497 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 17:37:27,498 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 17:37:27,499 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 17:37:27,500 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 17:37:27,501 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 17:37:27,504 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 17:37:27,505 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 17:37:27,506 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 17:37:27,525 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 17:37:27,525 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 17:37:27,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,526 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2022-12-13 17:37:27,528 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 17:37:27,537 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:27,537 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:27,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:27,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:27,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:27,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:27,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:27,539 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:27,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2022-12-13 17:37:27,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,542 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2022-12-13 17:37:27,544 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 17:37:27,554 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:27,554 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:27,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:27,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:27,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:27,554 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:27,554 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:27,556 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:27,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:27,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,559 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2022-12-13 17:37:27,561 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 17:37:27,571 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:27,571 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:27,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:27,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:27,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:27,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:27,572 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:27,573 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:27,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2022-12-13 17:37:27,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,576 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2022-12-13 17:37:27,578 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 17:37:27,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:27,588 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:27,588 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:27,588 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:27,588 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:27,589 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:27,589 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:27,590 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 17:37:27,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2022-12-13 17:37:27,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,593 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2022-12-13 17:37:27,596 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 17:37:27,606 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 17:37:27,606 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 17:37:27,606 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 17:37:27,606 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 17:37:27,606 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 17:37:27,607 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 17:37:27,607 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 17:37:27,609 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 17:37:27,611 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 17:37:27,611 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 17:37:27,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 17:37:27,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:37:27,612 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 17:37:27,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2022-12-13 17:37:27,613 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 17:37:27,613 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 17:37:27,613 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 17:37:27,614 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-12-13 17:37:27,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:27,616 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 17:37:27,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:27,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 17:37:27,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:27,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:37:27,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:27,827 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 17:37:27,827 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-12-13 17:37:27,827 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 403 states and 509 transitions. cyclomatic complexity: 112 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 17:37:27,917 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 403 states and 509 transitions. cyclomatic complexity: 112. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 606 states and 745 transitions. Complement of second has 23 states. [2022-12-13 17:37:27,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-12-13 17:37:27,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 17:37:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2022-12-13 17:37:27,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 57 letters. Loop has 8 letters. [2022-12-13 17:37:27,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:27,919 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 17:37:27,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Ended with exit code 0 [2022-12-13 17:37:27,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:27,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 17:37:27,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:28,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:37:28,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:28,126 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 17:37:28,126 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-12-13 17:37:28,126 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 403 states and 509 transitions. cyclomatic complexity: 112 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 17:37:28,195 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 403 states and 509 transitions. cyclomatic complexity: 112. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 606 states and 745 transitions. Complement of second has 23 states. [2022-12-13 17:37:28,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-12-13 17:37:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 17:37:28,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2022-12-13 17:37:28,196 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 57 letters. Loop has 8 letters. [2022-12-13 17:37:28,196 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:28,196 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 17:37:28,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:37:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:28,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 17:37:28,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:37:28,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:37:28,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:37:28,388 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 17:37:28,388 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 5 loop predicates [2022-12-13 17:37:28,389 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 403 states and 509 transitions. cyclomatic complexity: 112 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 17:37:28,492 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 403 states and 509 transitions. cyclomatic complexity: 112. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 813 states and 1009 transitions. Complement of second has 27 states. [2022-12-13 17:37:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-12-13 17:37:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 17:37:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2022-12-13 17:37:28,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 57 letters. Loop has 8 letters. [2022-12-13 17:37:28,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:28,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 65 letters. Loop has 8 letters. [2022-12-13 17:37:28,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:28,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 57 letters. Loop has 16 letters. [2022-12-13 17:37:28,494 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 17:37:28,494 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 813 states and 1009 transitions. [2022-12-13 17:37:28,499 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 46 [2022-12-13 17:37:28,503 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 813 states to 610 states and 791 transitions. [2022-12-13 17:37:28,503 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 325 [2022-12-13 17:37:28,504 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 341 [2022-12-13 17:37:28,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 610 states and 791 transitions. [2022-12-13 17:37:28,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 17:37:28,504 INFO L218 hiAutomatonCegarLoop]: Abstraction has 610 states and 791 transitions. [2022-12-13 17:37:28,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states and 791 transitions. [2022-12-13 17:37:28,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 526. [2022-12-13 17:37:28,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 348 states have (on average 1.1666666666666667) internal successors, (406), 371 states have internal predecessors, (406), 100 states have call successors, (102), 75 states have call predecessors, (102), 78 states have return successors, (144), 79 states have call predecessors, (144), 96 states have call successors, (144) [2022-12-13 17:37:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 652 transitions. [2022-12-13 17:37:28,516 INFO L240 hiAutomatonCegarLoop]: Abstraction has 526 states and 652 transitions. [2022-12-13 17:37:28,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:37:28,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 17:37:28,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-12-13 17:37:28,517 INFO L87 Difference]: Start difference. First operand 526 states and 652 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 12 states have internal predecessors, (43), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 17:37:28,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:37:28,778 INFO L93 Difference]: Finished difference Result 371 states and 440 transitions. [2022-12-13 17:37:28,778 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 371 states and 440 transitions. [2022-12-13 17:37:28,779 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 17:37:28,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 371 states to 0 states and 0 transitions. [2022-12-13 17:37:28,780 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 17:37:28,780 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 17:37:28,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 17:37:28,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 17:37:28,780 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 17:37:28,780 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 17:37:28,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 17:37:28,780 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 17:37:28,780 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-12-13 17:37:28,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 17:37:28,781 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 17:37:28,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 17:37:28,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 05:37:28 BoogieIcfgContainer [2022-12-13 17:37:28,786 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 17:37:28,786 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:37:28,786 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:37:28,786 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:37:28,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:37:13" (3/4) ... [2022-12-13 17:37:28,788 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 17:37:28,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:37:28,789 INFO L158 Benchmark]: Toolchain (without parser) took 15255.79ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 101.7MB in the beginning and 118.7MB in the end (delta: -17.0MB). Peak memory consumption was 50.2MB. Max. memory is 16.1GB. [2022-12-13 17:37:28,789 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 46.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:37:28,789 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.69ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 91.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 17:37:28,789 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.41ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 89.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:37:28,790 INFO L158 Benchmark]: Boogie Preprocessor took 12.65ms. Allocated memory is still 142.6MB. Free memory was 89.9MB in the beginning and 88.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:37:28,790 INFO L158 Benchmark]: RCFGBuilder took 187.73ms. Allocated memory is still 142.6MB. Free memory was 88.8MB in the beginning and 79.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 17:37:28,790 INFO L158 Benchmark]: BuchiAutomizer took 14865.08ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 79.4MB in the beginning and 119.8MB in the end (delta: -40.4MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2022-12-13 17:37:28,790 INFO L158 Benchmark]: Witness Printer took 2.61ms. Allocated memory is still 207.6MB. Free memory was 119.8MB in the beginning and 118.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:37:28,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 46.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 161.69ms. Allocated memory is still 142.6MB. Free memory was 101.3MB in the beginning and 91.2MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.41ms. Allocated memory is still 142.6MB. Free memory was 91.2MB in the beginning and 89.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.65ms. Allocated memory is still 142.6MB. Free memory was 89.9MB in the beginning and 88.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 187.73ms. Allocated memory is still 142.6MB. Free memory was 88.8MB in the beginning and 79.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 14865.08ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 79.4MB in the beginning and 119.8MB in the end (delta: -40.4MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * Witness Printer took 2.61ms. Allocated memory is still 207.6MB. Free memory was 119.8MB in the beginning and 118.7MB 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 12 terminating modules (7 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function \old(n) and consists of 11 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. 7 modules have a trivial ranking function, the largest among these consists of 25 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 14.8s and 9 iterations. TraceHistogramMax:12. Analysis of lassos took 7.3s. Construction of modules took 1.6s. Büchi inclusion checks took 5.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 556 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 2, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/16 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1170 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1141 mSDsluCounter, 1500 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1041 mSDsCounter, 720 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3931 IncrementalHoareTripleChecker+Invalid, 4651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 720 mSolverCounterUnsat, 459 mSDtfsCounter, 3931 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI3 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp96 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq182 hnf93 smp76 dnf100 smp100 tf111 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 25 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-12-13 17:37:28,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2022-12-13 17:37:29,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-12-13 17:37:29,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-12-13 17:37:29,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-12-13 17:37:29,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-12-13 17:37:29,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-12-13 17:37:30,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-12-13 17:37:30,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 17:37:30,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_736d1ef0-62b4-41a1-a93c-90edd8a83e0e/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