./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_7-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_7-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc --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 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 --- 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-5e519f3 [2022-11-02 21:09:37,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:09:37,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:09:37,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:09:37,757 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:09:37,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:09:37,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:09:37,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:09:37,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:09:37,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:09:37,785 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:09:37,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:09:37,787 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:09:37,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:09:37,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:09:37,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:09:37,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:09:37,798 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:09:37,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:09:37,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:09:37,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:09:37,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:09:37,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:09:37,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:09:37,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:09:37,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:09:37,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:09:37,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:09:37,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:09:37,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:09:37,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:09:37,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:09:37,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:09:37,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:09:37,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:09:37,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:09:37,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:09:37,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:09:37,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:09:37,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:09:37,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:09:37,850 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-02 21:09:37,889 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:09:37,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:09:37,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:09:37,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:09:37,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:09:37,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:09:37,896 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:09:37,897 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 21:09:37,897 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 21:09:37,897 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 21:09:37,898 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 21:09:37,899 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 21:09:37,899 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 21:09:37,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:09:37,899 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:09:37,900 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:09:37,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:09:37,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:09:37,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:09:37,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 21:09:37,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 21:09:37,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 21:09:37,901 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:09:37,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:09:37,903 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 21:09:37,904 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:09:37,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 21:09:37,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:09:37,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:09:37,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:09:37,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:09:37,907 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 21:09:37,907 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_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40add90db9f8d501baba3978de407d6383e788a1a5fafc7225d7676b58d18c84 [2022-11-02 21:09:38,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:09:38,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:09:38,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:09:38,312 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:09:38,313 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:09:38,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/recursive-simple/fibo_7-2.c [2022-11-02 21:09:38,405 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/data/1bf4a693e/d0f07789bfee4e17ada432b8f65a21fc/FLAG7b3fda74c [2022-11-02 21:09:39,029 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:09:39,031 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/sv-benchmarks/c/recursive-simple/fibo_7-2.c [2022-11-02 21:09:39,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/data/1bf4a693e/d0f07789bfee4e17ada432b8f65a21fc/FLAG7b3fda74c [2022-11-02 21:09:39,374 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/data/1bf4a693e/d0f07789bfee4e17ada432b8f65a21fc [2022-11-02 21:09:39,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:09:39,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:09:39,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:39,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:09:39,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:09:39,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e96f5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39, skipping insertion in model container [2022-11-02 21:09:39,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:09:39,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:09:39,633 WARN L230 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_b85e1d0c-4a81-4475-a811-94c6fd48934c/sv-benchmarks/c/recursive-simple/fibo_7-2.c[741,754] [2022-11-02 21:09:39,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:39,644 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:09:39,661 WARN L230 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_b85e1d0c-4a81-4475-a811-94c6fd48934c/sv-benchmarks/c/recursive-simple/fibo_7-2.c[741,754] [2022-11-02 21:09:39,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:39,679 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:09:39,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39 WrapperNode [2022-11-02 21:09:39,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:39,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:39,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:09:39,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:09:39,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,717 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-02 21:09:39,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:39,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:09:39,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:09:39,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:09:39,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,738 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:09:39,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:09:39,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:09:39,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:09:39,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39" (1/1) ... [2022-11-02 21:09:39,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:39,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:39,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:39,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 21:09:39,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:09:39,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:09:39,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:09:39,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:09:39,829 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-11-02 21:09:39,829 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-11-02 21:09:39,901 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:09:39,903 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:09:40,018 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:09:40,024 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:09:40,025 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 21:09:40,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:40 BoogieIcfgContainer [2022-11-02 21:09:40,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:09:40,028 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 21:09:40,028 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 21:09:40,034 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 21:09:40,035 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 21:09:40,035 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 09:09:39" (1/3) ... [2022-11-02 21:09:40,036 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58219874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 09:09:40, skipping insertion in model container [2022-11-02 21:09:40,037 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 21:09:40,037 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:39" (2/3) ... [2022-11-02 21:09:40,037 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58219874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 09:09:40, skipping insertion in model container [2022-11-02 21:09:40,037 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 21:09:40,037 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:40" (3/3) ... [2022-11-02 21:09:40,039 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_7-2.c [2022-11-02 21:09:40,105 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 21:09:40,105 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 21:09:40,105 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 21:09:40,105 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 21:09:40,105 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 21:09:40,105 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 21:09:40,105 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 21:09:40,106 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 21:09:40,110 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:09:40,135 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 21:09:40,136 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:09:40,136 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:09:40,144 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 21:09:40,144 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-02 21:09:40,144 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 21:09:40,145 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-02 21:09:40,147 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 21:09:40,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:09:40,147 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:09:40,148 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 21:09:40,148 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-02 21:09:40,158 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue 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(11, 2);call #Ultimate.allocInit(12, 3); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 5#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 6#fiboENTRYtrue [2022-11-02 21:09:40,158 INFO L750 eck$LassoCheckResult]: Loop: 6#fiboENTRYtrue ~n := #in~n; 7#L8true assume !(~n < 1); 9#L10true assume !(1 == ~n); 14#L13true call #t~ret4 := fibo(~n - 1);< 6#fiboENTRYtrue [2022-11-02 21:09:40,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:40,166 INFO L85 PathProgramCache]: Analyzing trace with hash 29883, now seen corresponding path program 1 times [2022-11-02 21:09:40,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:40,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103911138] [2022-11-02 21:09:40,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:40,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:40,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:40,285 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:09:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:40,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:09:40,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:40,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 1 times [2022-11-02 21:09:40,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:40,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965010756] [2022-11-02 21:09:40,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:40,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:40,330 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:09:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:40,338 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:09:40,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1828301702, now seen corresponding path program 1 times [2022-11-02 21:09:40,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:40,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182049893] [2022-11-02 21:09:40,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:40,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:40,356 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:09:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:40,371 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:09:40,528 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:09:40,528 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:09:40,529 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:09:40,529 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:09:40,529 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 21:09:40,529 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:40,530 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:09:40,530 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:09:40,530 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration1_Loop [2022-11-02 21:09:40,530 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:09:40,531 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:09:40,566 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:40,594 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:40,599 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:40,603 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:40,628 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:40,743 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:09:40,744 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 21:09:40,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:40,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:40,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:40,759 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:40,759 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:40,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-02 21:09:40,803 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:09:40,803 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 21:09:40,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-02 21:09:40,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:40,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:40,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:40,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-02 21:09:40,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:40,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:40,881 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:09:40,881 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 21:09:40,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:40,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:40,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:40,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:40,939 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:40,939 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:40,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-02 21:09:40,966 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:09:40,966 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 21:09:41,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:41,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:41,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:41,016 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:41,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-02 21:09:41,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:41,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:41,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:41,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:41,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:41,108 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:41,121 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:09:41,121 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:41,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-02 21:09:41,223 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 21:09:41,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:41,229 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:09:41,229 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:09:41,229 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:09:41,229 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:09:41,229 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 21:09:41,229 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:41,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:09:41,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:09:41,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration1_Loop [2022-11-02 21:09:41,230 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:09:41,230 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:09:41,234 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:41,245 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:41,252 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:41,258 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:41,275 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:41,338 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:09:41,343 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 21:09:41,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:41,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:41,346 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:41,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-02 21:09:41,371 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 [2022-11-02 21:09:41,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:41,386 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:41,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:41,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:41,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:41,389 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:41,389 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:41,400 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:09:41,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:41,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:41,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:41,450 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:41,461 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 [2022-11-02 21:09:41,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-02 21:09:41,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:41,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:41,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:41,477 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:41,477 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:41,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:41,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:41,488 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:09:41,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:41,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:41,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:41,538 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:41,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-02 21:09:41,543 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 [2022-11-02 21:09:41,558 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:41,558 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:41,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:41,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:41,559 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:41,560 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:41,560 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:41,590 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:09:41,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:41,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:41,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:41,616 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:41,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-02 21:09:41,621 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 [2022-11-02 21:09:41,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:41,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:41,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:41,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:41,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:41,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:41,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:41,651 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 21:09:41,657 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 21:09:41,657 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 21:09:41,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:41,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:41,660 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:41,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-02 21:09:41,695 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 21:09:41,695 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 21:09:41,695 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 21:09:41,696 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-02 21:09:41,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-11-02 21:09:41,725 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 21:09:41,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:41,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:09:41,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:41,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:09:41,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:41,922 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-02 21:09:41,924 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:42,074 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 60 transitions. Complement of second has 12 states. [2022-11-02 21:09:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-02 21:09:42,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:42,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-11-02 21:09:42,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-02 21:09:42,094 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:42,095 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-02 21:09:42,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:42,096 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-02 21:09:42,096 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:42,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2022-11-02 21:09:42,103 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 21:09:42,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 25 states and 34 transitions. [2022-11-02 21:09:42,114 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-02 21:09:42,115 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-02 21:09:42,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-11-02 21:09:42,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:09:42,116 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-02 21:09:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-11-02 21:09:42,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-11-02 21:09:42,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 21:09:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-02 21:09:42,197 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-02 21:09:42,197 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-02 21:09:42,198 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-02 21:09:42,198 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-11-02 21:09:42,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 21:09:42,199 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:09:42,199 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:09:42,201 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:42,201 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:42,205 INFO L748 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY 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(11, 2);call #Ultimate.allocInit(12, 3); 122#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 128#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 131#fiboENTRY ~n := #in~n; 132#L8 assume !(~n < 1); 137#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 127#fiboENTRY ~n := #in~n; 133#L8 assume ~n < 1;#res := 0; 134#fiboFINAL assume true; 135#fiboEXIT >#33#return; 124#L13-1 [2022-11-02 21:09:42,205 INFO L750 eck$LassoCheckResult]: Loop: 124#L13-1 call #t~ret5 := fibo(~n - 2);< 125#fiboENTRY ~n := #in~n; 140#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 123#L13 call #t~ret4 := fibo(~n - 1);< 125#fiboENTRY ~n := #in~n; 140#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 138#fiboEXIT >#33#return; 124#L13-1 [2022-11-02 21:09:42,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:42,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1181449843, now seen corresponding path program 1 times [2022-11-02 21:09:42,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:42,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283598534] [2022-11-02 21:09:42,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:42,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:42,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:09:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:09:42,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:42,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283598534] [2022-11-02 21:09:42,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283598534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:42,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:42,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:09:42,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514788618] [2022-11-02 21:09:42,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:42,452 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 21:09:42,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:42,453 INFO L85 PathProgramCache]: Analyzing trace with hash 246097683, now seen corresponding path program 1 times [2022-11-02 21:09:42,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:42,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27044193] [2022-11-02 21:09:42,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:42,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-02 21:09:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:09:42,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:42,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27044193] [2022-11-02 21:09:42,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27044193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:42,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:42,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:09:42,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967795842] [2022-11-02 21:09:42,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:42,551 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-02 21:09:42,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:42,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:09:42,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:09:42,556 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:42,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:42,682 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-11-02 21:09:42,683 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-11-02 21:09:42,691 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 21:09:42,699 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-11-02 21:09:42,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-02 21:09:42,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-11-02 21:09:42,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-11-02 21:09:42,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:09:42,703 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-02 21:09:42,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-11-02 21:09:42,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-02 21:09:42,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 21:09:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-02 21:09:42,713 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-02 21:09:42,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:09:42,714 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-02 21:09:42,715 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-02 21:09:42,715 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-11-02 21:09:42,717 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 21:09:42,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:09:42,720 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:09:42,720 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:42,721 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:42,721 INFO L748 eck$LassoCheckResult]: Stem: 194#ULTIMATE.startENTRY 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(11, 2);call #Ultimate.allocInit(12, 3); 195#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 200#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 204#fiboENTRY ~n := #in~n; 206#L8 assume !(~n < 1); 210#L10 assume !(1 == ~n); 199#L13 call #t~ret4 := fibo(~n - 1);< 201#fiboENTRY ~n := #in~n; 207#L8 assume !(~n < 1); 209#L10 assume 1 == ~n;#res := 1; 211#fiboFINAL assume true; 213#fiboEXIT >#33#return; 197#L13-1 [2022-11-02 21:09:42,721 INFO L750 eck$LassoCheckResult]: Loop: 197#L13-1 call #t~ret5 := fibo(~n - 2);< 198#fiboENTRY ~n := #in~n; 216#L8 assume !(~n < 1); 214#L10 assume !(1 == ~n); 196#L13 call #t~ret4 := fibo(~n - 1);< 198#fiboENTRY ~n := #in~n; 216#L8 assume !(~n < 1); 214#L10 assume 1 == ~n;#res := 1; 215#fiboFINAL assume true; 212#fiboEXIT >#33#return; 197#L13-1 [2022-11-02 21:09:42,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:42,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2029785426, now seen corresponding path program 1 times [2022-11-02 21:09:42,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:42,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738130749] [2022-11-02 21:09:42,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:42,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:09:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:42,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:42,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738130749] [2022-11-02 21:09:42,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738130749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:42,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818780348] [2022-11-02 21:09:42,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:42,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:42,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:42,847 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:42,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 21:09:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:42,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:09:42,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:42,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:43,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818780348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:43,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:43,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-02 21:09:43,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491450822] [2022-11-02 21:09:43,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:43,091 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 21:09:43,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:43,092 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 1 times [2022-11-02 21:09:43,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:43,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362520462] [2022-11-02 21:09:43,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:43,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:43,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:09:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:43,121 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:09:43,279 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:09:43,279 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:09:43,280 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:09:43,280 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:09:43,280 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 21:09:43,280 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:43,280 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:09:43,281 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:09:43,281 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration3_Loop [2022-11-02 21:09:43,281 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:09:43,281 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:09:43,283 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:43,287 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:43,292 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:43,302 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:43,354 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:09:43,354 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 21:09:43,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:43,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:43,356 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:43,366 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:43,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:43,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-02 21:09:43,393 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:09:43,393 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 21:09:43,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:43,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:43,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:43,438 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:43,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-02 21:09:43,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:43,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:43,480 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:09:43,480 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 21:09:43,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:43,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:43,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:43,511 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:43,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-02 21:09:43,514 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:43,514 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:43,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:43,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:43,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:43,576 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:43,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-02 21:09:43,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:09:43,580 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:44,808 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 21:09:44,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:44,812 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:09:44,812 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:09:44,812 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:09:44,812 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:09:44,812 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 21:09:44,812 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:44,812 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:09:44,812 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:09:44,812 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration3_Loop [2022-11-02 21:09:44,813 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:09:44,813 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:09:44,814 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:44,828 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:44,831 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:44,844 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:44,905 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:09:44,905 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 21:09:44,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:44,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:44,907 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:44,916 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 [2022-11-02 21:09:44,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-02 21:09:44,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:44,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:44,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:44,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:44,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:44,934 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:44,934 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:44,944 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:09:44,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:44,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:44,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:44,984 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:44,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-02 21:09:44,991 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 21:09:45,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:45,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:45,005 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:45,005 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:45,005 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:45,006 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:45,006 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:45,030 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:09:45,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:45,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:45,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:45,072 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:45,080 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 [2022-11-02 21:09:45,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-02 21:09:45,093 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:45,094 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:45,094 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:45,094 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:45,094 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:45,096 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:45,096 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:45,110 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 21:09:45,124 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 21:09:45,124 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 21:09:45,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:45,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:45,128 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:45,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-02 21:09:45,141 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 21:09:45,142 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 21:09:45,142 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 21:09:45,142 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-02 21:09:45,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:45,189 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 21:09:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:45,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:09:45,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:45,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:09:45,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:45,476 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-02 21:09:45,477 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:09:45,770 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2022-11-02 21:09:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-02 21:09:45,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:09:45,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-02 21:09:45,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2022-11-02 21:09:45,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:45,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2022-11-02 21:09:45,774 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:45,774 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2022-11-02 21:09:45,775 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:45,775 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2022-11-02 21:09:45,781 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-02 21:09:45,785 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2022-11-02 21:09:45,785 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-11-02 21:09:45,786 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2022-11-02 21:09:45,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2022-11-02 21:09:45,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:09:45,786 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-11-02 21:09:45,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2022-11-02 21:09:45,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-11-02 21:09:45,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2022-11-02 21:09:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-11-02 21:09:45,817 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-11-02 21:09:45,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:45,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:09:45,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:09:45,818 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 21:09:45,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:45,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:45,981 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2022-11-02 21:09:45,981 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2022-11-02 21:09:45,985 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-02 21:09:45,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2022-11-02 21:09:45,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2022-11-02 21:09:45,989 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2022-11-02 21:09:45,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2022-11-02 21:09:45,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:09:45,990 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2022-11-02 21:09:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2022-11-02 21:09:46,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2022-11-02 21:09:46,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2022-11-02 21:09:46,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2022-11-02 21:09:46,005 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-02 21:09:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:09:46,006 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-02 21:09:46,006 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-02 21:09:46,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2022-11-02 21:09:46,009 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-02 21:09:46,009 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:09:46,009 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:09:46,010 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:46,010 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:46,011 INFO L748 eck$LassoCheckResult]: Stem: 787#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 788#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 802#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 804#fiboENTRY ~n := #in~n; 852#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 801#L13 call #t~ret4 := fibo(~n - 1);< 803#fiboENTRY ~n := #in~n; 813#L8 assume !(~n < 1); 818#L10 assume !(1 == ~n); 824#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 850#L8 assume !(~n < 1); 848#L10 assume 1 == ~n;#res := 1; 846#fiboFINAL assume true; 844#fiboEXIT >#33#return; 790#L13-1 call #t~ret5 := fibo(~n - 2);< 842#fiboENTRY ~n := #in~n; 890#L8 assume ~n < 1;#res := 0; 889#fiboFINAL assume true; 888#fiboEXIT >#35#return; 887#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 885#fiboFINAL assume true; 877#fiboEXIT >#33#return; 820#L13-1 [2022-11-02 21:09:46,011 INFO L750 eck$LassoCheckResult]: Loop: 820#L13-1 call #t~ret5 := fibo(~n - 2);< 800#fiboENTRY ~n := #in~n; 882#L8 assume !(~n < 1); 819#L10 assume !(1 == ~n); 822#L13 call #t~ret4 := fibo(~n - 1);< 800#fiboENTRY ~n := #in~n; 882#L8 assume !(~n < 1); 819#L10 assume 1 == ~n;#res := 1; 823#fiboFINAL assume true; 874#fiboEXIT >#33#return; 820#L13-1 [2022-11-02 21:09:46,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1730264506, now seen corresponding path program 1 times [2022-11-02 21:09:46,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:46,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278943313] [2022-11-02 21:09:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:46,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 21:09:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:09:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:09:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:09:46,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:46,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278943313] [2022-11-02 21:09:46,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278943313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:46,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552454260] [2022-11-02 21:09:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:46,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:46,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:46,400 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:46,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 21:09:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:09:46,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:09:46,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:09:46,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552454260] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:46,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:46,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 18 [2022-11-02 21:09:46,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540280547] [2022-11-02 21:09:46,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:46,867 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 21:09:46,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:46,868 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 2 times [2022-11-02 21:09:46,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:46,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574700767] [2022-11-02 21:09:46,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:46,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:46,876 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:09:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:46,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:09:47,028 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:09:47,028 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:09:47,029 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:09:47,029 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:09:47,029 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 21:09:47,029 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:47,029 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:09:47,029 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:09:47,029 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration4_Loop [2022-11-02 21:09:47,030 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:09:47,030 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:09:47,031 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:47,035 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:47,045 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:47,048 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:47,100 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:09:47,100 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 21:09:47,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:47,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:47,112 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:47,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-02 21:09:47,113 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:47,114 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:47,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:09:47,143 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 21:09:47,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:47,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:47,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:47,180 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:47,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:47,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:47,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-02 21:09:47,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:47,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:47,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:47,246 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:47,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:09:47,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:47,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-02 21:09:48,508 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 21:09:48,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:48,513 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:09:48,513 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:09:48,513 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:09:48,513 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:09:48,513 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 21:09:48,514 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:48,514 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:09:48,514 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:09:48,514 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration4_Loop [2022-11-02 21:09:48,514 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:09:48,514 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:09:48,515 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:48,519 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:48,536 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:48,538 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:48,585 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:09:48,585 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 21:09:48,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:48,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:48,586 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:48,597 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 [2022-11-02 21:09:48,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-02 21:09:48,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:48,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:48,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:48,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:48,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:48,614 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:48,614 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:48,634 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:09:48,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:48,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:48,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:48,678 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:48,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-02 21:09:48,681 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 [2022-11-02 21:09:48,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:48,696 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:48,696 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:48,697 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:48,697 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:48,703 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:48,703 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:48,713 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 21:09:48,716 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-02 21:09:48,717 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-02 21:09:48,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:48,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:48,719 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:48,722 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 21:09:48,722 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 21:09:48,722 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 21:09:48,722 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-02 21:09:48,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-02 21:09:48,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:48,763 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 21:09:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:48,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:09:48,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:49,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:09:49,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:49,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:49,222 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-02 21:09:49,223 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 21:09:49,458 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 175 states and 233 transitions. Complement of second has 33 states. [2022-11-02 21:09:49,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-02 21:09:49,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 21:09:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-02 21:09:49,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-02 21:09:49,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:49,462 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 21:09:49,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:49,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:49,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:09:49,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:49,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:09:49,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:49,891 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-02 21:09:49,892 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 21:09:50,084 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 300 states and 403 transitions. Complement of second has 25 states. [2022-11-02 21:09:50,085 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 [2022-11-02 21:09:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 21:09:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-11-02 21:09:50,086 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-02 21:09:50,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:50,087 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 21:09:50,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:50,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:09:50,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:50,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:09:50,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:50,511 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-02 21:09:50,512 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 21:09:50,805 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 858 states and 1136 transitions. Complement of second has 130 states. [2022-11-02 21:09:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-02 21:09:50,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-02 21:09:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2022-11-02 21:09:50,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-02 21:09:50,810 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:50,810 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 42 letters. Loop has 10 letters. [2022-11-02 21:09:50,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:50,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 20 letters. [2022-11-02 21:09:50,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:50,816 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 858 states and 1136 transitions. [2022-11-02 21:09:50,836 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2022-11-02 21:09:50,856 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 858 states to 430 states and 620 transitions. [2022-11-02 21:09:50,856 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 163 [2022-11-02 21:09:50,858 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2022-11-02 21:09:50,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 620 transitions. [2022-11-02 21:09:50,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:09:50,858 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 620 transitions. [2022-11-02 21:09:50,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 620 transitions. [2022-11-02 21:09:50,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 352. [2022-11-02 21:09:50,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 221 states have (on average 1.1990950226244343) internal successors, (265), 235 states have internal predecessors, (265), 75 states have call successors, (84), 46 states have call predecessors, (84), 56 states have return successors, (136), 70 states have call predecessors, (136), 71 states have call successors, (136) [2022-11-02 21:09:50,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 485 transitions. [2022-11-02 21:09:50,913 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 485 transitions. [2022-11-02 21:09:50,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:50,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:09:50,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:09:50,914 INFO L87 Difference]: Start difference. First operand 352 states and 485 transitions. Second operand has 19 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 11 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 21:09:51,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:51,280 INFO L93 Difference]: Finished difference Result 559 states and 833 transitions. [2022-11-02 21:09:51,280 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 559 states and 833 transitions. [2022-11-02 21:09:51,292 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-02 21:09:51,303 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 559 states to 549 states and 817 transitions. [2022-11-02 21:09:51,304 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 243 [2022-11-02 21:09:51,305 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 243 [2022-11-02 21:09:51,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 549 states and 817 transitions. [2022-11-02 21:09:51,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:09:51,305 INFO L218 hiAutomatonCegarLoop]: Abstraction has 549 states and 817 transitions. [2022-11-02 21:09:51,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states and 817 transitions. [2022-11-02 21:09:51,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 517. [2022-11-02 21:09:51,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 316 states have (on average 1.1898734177215189) internal successors, (376), 334 states have internal predecessors, (376), 121 states have call successors, (135), 62 states have call predecessors, (135), 80 states have return successors, (264), 120 states have call predecessors, (264), 115 states have call successors, (264) [2022-11-02 21:09:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 775 transitions. [2022-11-02 21:09:51,398 INFO L240 hiAutomatonCegarLoop]: Abstraction has 517 states and 775 transitions. [2022-11-02 21:09:51,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:09:51,402 INFO L428 stractBuchiCegarLoop]: Abstraction has 517 states and 775 transitions. [2022-11-02 21:09:51,402 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-02 21:09:51,402 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 517 states and 775 transitions. [2022-11-02 21:09:51,407 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-02 21:09:51,407 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:09:51,407 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:09:51,409 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:51,409 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-02 21:09:51,410 INFO L748 eck$LassoCheckResult]: Stem: 4003#ULTIMATE.startENTRY 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(11, 2);call #Ultimate.allocInit(12, 3); 4004#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 4018#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 4019#fiboENTRY ~n := #in~n; 4085#L8 assume !(~n < 1); 4084#L10 assume !(1 == ~n); 4080#L13 call #t~ret4 := fibo(~n - 1);< 4083#fiboENTRY ~n := #in~n; 4082#L8 assume !(~n < 1); 4081#L10 assume !(1 == ~n); 4076#L13 call #t~ret4 := fibo(~n - 1);< 4079#fiboENTRY ~n := #in~n; 4078#L8 assume !(~n < 1); 4077#L10 assume !(1 == ~n); 4073#L13 call #t~ret4 := fibo(~n - 1);< 4075#fiboENTRY ~n := #in~n; 4074#L8 assume !(~n < 1); 4072#L10 assume !(1 == ~n); 4055#L13 call #t~ret4 := fibo(~n - 1);< 4069#fiboENTRY ~n := #in~n; 4070#L8 assume !(~n < 1); 4121#L10 assume !(1 == ~n); 4054#L13 call #t~ret4 := fibo(~n - 1);< 4069#fiboENTRY ~n := #in~n; 4071#L8 assume !(~n < 1); 4053#L10 assume 1 == ~n;#res := 1; 4056#fiboFINAL assume true; 4209#fiboEXIT >#33#return; 4206#L13-1 call #t~ret5 := fibo(~n - 2);< 4208#fiboENTRY ~n := #in~n; 4370#L8 assume !(~n < 1); 4351#L10 assume !(1 == ~n); 4353#L13 call #t~ret4 := fibo(~n - 1);< 4368#fiboENTRY ~n := #in~n; 4379#L8 assume !(~n < 1); 4371#L10 assume !(1 == ~n); 4372#L13 call #t~ret4 := fibo(~n - 1);< 4385#fiboENTRY [2022-11-02 21:09:51,410 INFO L750 eck$LassoCheckResult]: Loop: 4385#fiboENTRY ~n := #in~n; 4400#L8 assume !(~n < 1); 4399#L10 assume !(1 == ~n); 4381#L13 call #t~ret4 := fibo(~n - 1);< 4385#fiboENTRY [2022-11-02 21:09:51,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:51,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1831142574, now seen corresponding path program 1 times [2022-11-02 21:09:51,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:51,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898465369] [2022-11-02 21:09:51,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:51,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 21:09:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:51,714 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 46 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:09:51,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:51,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898465369] [2022-11-02 21:09:51,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898465369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:51,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080227261] [2022-11-02 21:09:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:51,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:51,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:51,718 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:51,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-02 21:09:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:51,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:09:51,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 46 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:09:51,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 46 proven. 55 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:09:52,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080227261] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:52,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:52,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2022-11-02 21:09:52,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055661190] [2022-11-02 21:09:52,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:52,016 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 21:09:52,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:52,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 2 times [2022-11-02 21:09:52,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:52,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621583329] [2022-11-02 21:09:52,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:52,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:52,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:09:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:52,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:09:52,076 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:09:52,076 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:09:52,076 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:09:52,076 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:09:52,077 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 21:09:52,077 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,077 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:09:52,077 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:09:52,077 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration5_Loop [2022-11-02 21:09:52,077 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:09:52,077 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:09:52,078 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:52,082 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:52,090 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:52,093 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:52,100 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:52,134 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:09:52,135 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 21:09:52,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:52,136 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:52,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:52,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-02 21:09:52,175 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:09:52,175 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 21:09:52,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:52,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:52,205 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-02 21:09:52,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:52,207 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:52,220 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:09:52,220 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 21:09:52,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:52,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:52,248 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-02 21:09:52,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:52,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:52,261 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:09:52,261 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 21:09:52,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-11-02 21:09:52,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:52,285 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:52,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:52,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-02 21:09:52,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:52,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:52,322 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:09:52,325 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:52,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-02 21:09:52,396 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 21:09:52,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:52,406 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:09:52,406 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:09:52,406 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:09:52,406 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:09:52,407 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 21:09:52,407 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,407 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:09:52,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:09:52,407 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration5_Loop [2022-11-02 21:09:52,407 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:09:52,407 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:09:52,408 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:52,411 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:52,415 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:52,418 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:52,420 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:52,461 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:09:52,461 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 21:09:52,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:52,463 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,471 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 [2022-11-02 21:09:52,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-02 21:09:52,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:52,486 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:52,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:52,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:52,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:52,487 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:52,487 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:52,496 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:09:52,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:52,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:52,542 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,546 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 21:09:52,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-02 21:09:52,562 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:52,562 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:52,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:52,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:52,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:52,563 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:52,563 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:52,578 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:09:52,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-11-02 21:09:52,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:52,615 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,617 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 [2022-11-02 21:09:52,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-02 21:09:52,628 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:52,628 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:52,628 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:52,628 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:52,628 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:52,629 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:52,629 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:52,630 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:09:52,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-11-02 21:09:52,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:52,654 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-02 21:09:52,656 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 [2022-11-02 21:09:52,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:52,668 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:52,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:52,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:52,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:52,669 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:52,669 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:52,690 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:09:52,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2022-11-02 21:09:52,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:52,726 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-02 21:09:52,728 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 [2022-11-02 21:09:52,740 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:52,740 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:52,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:52,741 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:52,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:52,742 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:52,742 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:52,744 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 21:09:52,747 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-02 21:09:52,747 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-02 21:09:52,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:52,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:52,749 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:52,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-02 21:09:52,752 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 21:09:52,752 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 21:09:52,752 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 21:09:52,752 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-02 21:09:52,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:52,789 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 21:09:52,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:52,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2022-11-02 21:09:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:52,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:09:52,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:53,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:09:53,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:53,053 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-02 21:09:53,054 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 517 states and 775 transitions. cyclomatic complexity: 268 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:53,132 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 517 states and 775 transitions. cyclomatic complexity: 268. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 533 states and 791 transitions. Complement of second has 13 states. [2022-11-02 21:09:53,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-02 21:09:53,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-02 21:09:53,134 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 37 letters. Loop has 4 letters. [2022-11-02 21:09:53,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:53,135 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 21:09:53,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:53,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:09:53,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:53,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:53,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:09:53,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:53,371 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-02 21:09:53,371 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 517 states and 775 transitions. cyclomatic complexity: 268 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:53,442 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 517 states and 775 transitions. cyclomatic complexity: 268. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 533 states and 791 transitions. Complement of second has 13 states. [2022-11-02 21:09:53,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-02 21:09:53,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:53,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-02 21:09:53,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 37 letters. Loop has 4 letters. [2022-11-02 21:09:53,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:53,444 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 21:09:53,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:53,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:09:53,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:53,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:09:53,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:53,689 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-02 21:09:53,690 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 517 states and 775 transitions. cyclomatic complexity: 268 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:53,780 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 517 states and 775 transitions. cyclomatic complexity: 268. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 692 states and 973 transitions. Complement of second has 14 states. [2022-11-02 21:09:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-02 21:09:53,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-11-02 21:09:53,783 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 37 letters. Loop has 4 letters. [2022-11-02 21:09:53,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:53,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 41 letters. Loop has 4 letters. [2022-11-02 21:09:53,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:53,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 37 letters. Loop has 8 letters. [2022-11-02 21:09:53,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:53,785 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 692 states and 973 transitions. [2022-11-02 21:09:53,795 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-02 21:09:53,804 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 692 states to 579 states and 848 transitions. [2022-11-02 21:09:53,804 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 208 [2022-11-02 21:09:53,805 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2022-11-02 21:09:53,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 579 states and 848 transitions. [2022-11-02 21:09:53,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:09:53,806 INFO L218 hiAutomatonCegarLoop]: Abstraction has 579 states and 848 transitions. [2022-11-02 21:09:53,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states and 848 transitions. [2022-11-02 21:09:53,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 549. [2022-11-02 21:09:53,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 343 states have (on average 1.1749271137026238) internal successors, (403), 366 states have internal predecessors, (403), 121 states have call successors, (135), 62 states have call predecessors, (135), 85 states have return successors, (274), 120 states have call predecessors, (274), 115 states have call successors, (274) [2022-11-02 21:09:53,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 812 transitions. [2022-11-02 21:09:53,860 INFO L240 hiAutomatonCegarLoop]: Abstraction has 549 states and 812 transitions. [2022-11-02 21:09:53,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:53,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 21:09:53,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:09:53,862 INFO L87 Difference]: Start difference. First operand 549 states and 812 transitions. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (8), 7 states have call predecessors, (8), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:54,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:54,132 INFO L93 Difference]: Finished difference Result 659 states and 996 transitions. [2022-11-02 21:09:54,132 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 659 states and 996 transitions. [2022-11-02 21:09:54,142 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-02 21:09:54,152 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 659 states to 642 states and 974 transitions. [2022-11-02 21:09:54,152 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 244 [2022-11-02 21:09:54,153 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 244 [2022-11-02 21:09:54,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 642 states and 974 transitions. [2022-11-02 21:09:54,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:09:54,153 INFO L218 hiAutomatonCegarLoop]: Abstraction has 642 states and 974 transitions. [2022-11-02 21:09:54,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states and 974 transitions. [2022-11-02 21:09:54,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 588. [2022-11-02 21:09:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 366 states have (on average 1.169398907103825) internal successors, (428), 394 states have internal predecessors, (428), 134 states have call successors, (150), 69 states have call predecessors, (150), 88 states have return successors, (297), 124 states have call predecessors, (297), 127 states have call successors, (297) [2022-11-02 21:09:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 875 transitions. [2022-11-02 21:09:54,178 INFO L240 hiAutomatonCegarLoop]: Abstraction has 588 states and 875 transitions. [2022-11-02 21:09:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:09:54,179 INFO L428 stractBuchiCegarLoop]: Abstraction has 588 states and 875 transitions. [2022-11-02 21:09:54,179 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-02 21:09:54,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 588 states and 875 transitions. [2022-11-02 21:09:54,183 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-02 21:09:54,183 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:09:54,183 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:09:54,184 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:54,184 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-02 21:09:54,184 INFO L748 eck$LassoCheckResult]: Stem: 8177#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 8178#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 7; 8193#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 8194#fiboENTRY ~n := #in~n; 8284#L8 assume !(~n < 1); 8254#L10 assume !(1 == ~n); 8250#L13 call #t~ret4 := fibo(~n - 1);< 8267#fiboENTRY ~n := #in~n; 8256#L8 assume !(~n < 1); 8257#L10 assume !(1 == ~n); 8249#L13 call #t~ret4 := fibo(~n - 1);< 8251#fiboENTRY ~n := #in~n; 8269#L8 assume !(~n < 1); 8266#L10 assume !(1 == ~n); 8262#L13 call #t~ret4 := fibo(~n - 1);< 8265#fiboENTRY ~n := #in~n; 8318#L8 assume !(~n < 1); 8296#L10 assume !(1 == ~n); 8291#L13 call #t~ret4 := fibo(~n - 1);< 8294#fiboENTRY ~n := #in~n; 8375#L8 assume !(~n < 1); 8372#L10 assume !(1 == ~n); 8186#L13 call #t~ret4 := fibo(~n - 1);< 8363#fiboENTRY ~n := #in~n; 8377#L8 assume !(~n < 1); 8374#L10 assume !(1 == ~n); 8187#L13 call #t~ret4 := fibo(~n - 1);< 8363#fiboENTRY ~n := #in~n; 8378#L8 assume !(~n < 1); 8598#L10 assume 1 == ~n;#res := 1; 8596#fiboFINAL assume true; 8589#fiboEXIT >#33#return; 8209#L13-1 call #t~ret5 := fibo(~n - 2);< 8578#fiboENTRY ~n := #in~n; 8625#L8 assume !(~n < 1); 8623#L10 assume !(1 == ~n); 8239#L13 call #t~ret4 := fibo(~n - 1);< 8634#fiboENTRY ~n := #in~n; 8645#L8 assume !(~n < 1); 8238#L10 assume !(1 == ~n); 8229#L13 call #t~ret4 := fibo(~n - 1);< 8226#fiboENTRY ~n := #in~n; 8230#L8 assume !(~n < 1); 8686#L10 assume !(1 == ~n); 8228#L13 [2022-11-02 21:09:54,185 INFO L750 eck$LassoCheckResult]: Loop: 8228#L13 call #t~ret4 := fibo(~n - 1);< 8226#fiboENTRY ~n := #in~n; 8230#L8 assume !(~n < 1); 8686#L10 assume !(1 == ~n); 8228#L13 [2022-11-02 21:09:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:54,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1118344712, now seen corresponding path program 2 times [2022-11-02 21:09:54,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:54,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470489411] [2022-11-02 21:09:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:54,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:54,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 21:09:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 139 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:09:54,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:54,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470489411] [2022-11-02 21:09:54,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470489411] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:54,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065227570] [2022-11-02 21:09:54,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:09:54,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:09:54,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:54,402 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:09:54,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-02 21:09:54,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:09:54,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:09:54,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:09:54,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 139 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:09:54,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 139 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:09:54,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065227570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:54,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:09:54,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 17 [2022-11-02 21:09:54,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087924787] [2022-11-02 21:09:54,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:54,697 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-02 21:09:54,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:54,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1893846, now seen corresponding path program 3 times [2022-11-02 21:09:54,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:54,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777932244] [2022-11-02 21:09:54,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:54,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:54,701 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:09:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:09:54,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:09:54,757 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:09:54,758 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:09:54,758 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:09:54,758 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:09:54,758 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 21:09:54,758 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:54,758 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:09:54,758 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:09:54,758 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration6_Loop [2022-11-02 21:09:54,758 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:09:54,758 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:09:54,759 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:54,768 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:54,770 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:54,772 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:54,818 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:09:54,818 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 21:09:54,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:54,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:54,826 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:54,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-02 21:09:54,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:09:54,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:54,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2022-11-02 21:09:54,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:54,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:54,871 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:54,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:09:54,873 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:09:54,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-02 21:09:57,212 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 21:09:57,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2022-11-02 21:09:57,216 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:09:57,216 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:09:57,216 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:09:57,216 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:09:57,216 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 21:09:57,216 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:57,216 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:09:57,216 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:09:57,216 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_7-2.c_Iteration6_Loop [2022-11-02 21:09:57,216 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:09:57,217 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:09:57,217 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:57,226 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:57,228 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:57,231 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:09:57,284 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:09:57,285 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 21:09:57,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:57,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:57,286 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:57,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-02 21:09:57,287 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 [2022-11-02 21:09:57,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:09:57,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:09:57,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:09:57,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:09:57,298 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:09:57,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:09:57,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:09:57,301 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 21:09:57,304 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 21:09:57,304 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 21:09:57,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:09:57,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:57,314 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:57,316 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 21:09:57,316 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 21:09:57,316 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 21:09:57,316 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-02 21:09:57,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-02 21:09:57,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:57,338 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 21:09:57,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:57,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 21:09:57,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:57,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:09:57,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:57,638 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-02 21:09:57,639 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 588 states and 875 transitions. cyclomatic complexity: 297 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:57,697 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 588 states and 875 transitions. cyclomatic complexity: 297. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 606 states and 894 transitions. Complement of second has 18 states. [2022-11-02 21:09:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-02 21:09:57,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2022-11-02 21:09:57,699 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 44 letters. Loop has 4 letters. [2022-11-02 21:09:57,700 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:57,700 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 21:09:57,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:57,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 21:09:57,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:57,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:09:57,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:57,919 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-02 21:09:57,919 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 588 states and 875 transitions. cyclomatic complexity: 297 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:58,024 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 588 states and 875 transitions. cyclomatic complexity: 297. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 836 states and 1216 transitions. Complement of second has 22 states. [2022-11-02 21:09:58,025 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 [2022-11-02 21:09:58,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:58,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2022-11-02 21:09:58,026 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 44 letters. Loop has 4 letters. [2022-11-02 21:09:58,027 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:58,027 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 48 letters. Loop has 4 letters. [2022-11-02 21:09:58,027 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:58,027 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-02 21:09:58,027 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:09:58,028 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 836 states and 1216 transitions. [2022-11-02 21:09:58,038 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-02 21:09:58,049 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 836 states to 766 states and 1141 transitions. [2022-11-02 21:09:58,050 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 253 [2022-11-02 21:09:58,050 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 281 [2022-11-02 21:09:58,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 766 states and 1141 transitions. [2022-11-02 21:09:58,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:09:58,051 INFO L218 hiAutomatonCegarLoop]: Abstraction has 766 states and 1141 transitions. [2022-11-02 21:09:58,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states and 1141 transitions. [2022-11-02 21:09:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 753. [2022-11-02 21:09:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 476 states have (on average 1.1470588235294117) internal successors, (546), 512 states have internal predecessors, (546), 167 states have call successors, (201), 96 states have call predecessors, (201), 110 states have return successors, (377), 144 states have call predecessors, (377), 160 states have call successors, (377) [2022-11-02 21:09:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1124 transitions. [2022-11-02 21:09:58,075 INFO L240 hiAutomatonCegarLoop]: Abstraction has 753 states and 1124 transitions. [2022-11-02 21:09:58,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:58,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 21:09:58,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:09:58,076 INFO L87 Difference]: Start difference. First operand 753 states and 1124 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 10 states have internal predecessors, (29), 8 states have call successors, (9), 9 states have call predecessors, (9), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:09:58,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:58,330 INFO L93 Difference]: Finished difference Result 321 states and 378 transitions. [2022-11-02 21:09:58,330 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 321 states and 378 transitions. [2022-11-02 21:09:58,334 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 21:09:58,334 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 321 states to 0 states and 0 transitions. [2022-11-02 21:09:58,334 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-02 21:09:58,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-02 21:09:58,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-02 21:09:58,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:09:58,334 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:09:58,334 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:09:58,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:09:58,335 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:09:58,335 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-02 21:09:58,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-02 21:09:58,336 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 21:09:58,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-02 21:09:58,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 09:09:58 BoogieIcfgContainer [2022-11-02 21:09:58,343 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 21:09:58,343 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:09:58,344 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:09:58,344 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:09:58,344 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:09:40" (3/4) ... [2022-11-02 21:09:58,347 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:09:58,347 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:09:58,357 INFO L158 Benchmark]: Toolchain (without parser) took 18973.34ms. Allocated memory was 111.1MB in the beginning and 169.9MB in the end (delta: 58.7MB). Free memory was 75.7MB in the beginning and 139.3MB in the end (delta: -63.6MB). Peak memory consumption was 93.7MB. Max. memory is 16.1GB. [2022-11-02 21:09:58,357 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory was 59.1MB in the beginning and 59.1MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:09:58,357 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.46ms. Allocated memory is still 111.1MB. Free memory was 75.5MB in the beginning and 87.5MB in the end (delta: -12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:09:58,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.07ms. Allocated memory is still 111.1MB. Free memory was 87.5MB in the beginning and 86.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:09:58,358 INFO L158 Benchmark]: Boogie Preprocessor took 22.22ms. Allocated memory is still 111.1MB. Free memory was 86.1MB in the beginning and 85.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:09:58,378 INFO L158 Benchmark]: RCFGBuilder took 285.54ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 76.4MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:09:58,379 INFO L158 Benchmark]: BuchiAutomizer took 18315.02ms. Allocated memory was 111.1MB in the beginning and 169.9MB in the end (delta: 58.7MB). Free memory was 76.4MB in the beginning and 46.9MB in the end (delta: 29.5MB). Peak memory consumption was 88.2MB. Max. memory is 16.1GB. [2022-11-02 21:09:58,379 INFO L158 Benchmark]: Witness Printer took 12.69ms. Allocated memory is still 169.9MB. Free memory was 46.9MB in the beginning and 139.3MB in the end (delta: -92.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 21:09:58,381 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory was 59.1MB in the beginning and 59.1MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.46ms. Allocated memory is still 111.1MB. Free memory was 75.5MB in the beginning and 87.5MB in the end (delta: -12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.07ms. Allocated memory is still 111.1MB. Free memory was 87.5MB in the beginning and 86.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.22ms. Allocated memory is still 111.1MB. Free memory was 86.1MB in the beginning and 85.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 285.54ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 76.4MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 18315.02ms. Allocated memory was 111.1MB in the beginning and 169.9MB in the end (delta: 58.7MB). Free memory was 76.4MB in the beginning and 46.9MB in the end (delta: 29.5MB). Peak memory consumption was 88.2MB. Max. memory is 16.1GB. * Witness Printer took 12.69ms. Allocated memory is still 169.9MB. Free memory was 46.9MB in the beginning and 139.3MB in the end (delta: -92.5MB). Peak memory consumption was 6.3MB. 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 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One deterministic module has affine ranking function n and consists of 7 locations. One nondeterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 5 modules have a trivial ranking function, the largest among these consists of 19 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 18.2s and 7 iterations. TraceHistogramMax:10. Analysis of lassos took 11.6s. Construction of modules took 1.1s. Büchi inclusion checks took 4.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 238 StatesRemovedByMinimization, 8 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, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 516 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 491 mSDsluCounter, 511 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 312 mSDsCounter, 348 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1202 IncrementalHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 348 mSolverCounterUnsat, 199 mSDtfsCounter, 1202 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp81 dnf100 smp100 tf110 neg96 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 55ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-02 21:09:58,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:58,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:58,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-02 21:09:59,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-02 21:09:59,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-02 21:09:59,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b85e1d0c-4a81-4475-a811-94c6fd48934c/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE