./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 38b53e6a 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_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R --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 64bit --witnessprinter.graph.data.programhash 9c9c032ca120503dfa93615a57a0bb47775014248f579f3a3fd38a4985b2298b --- 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-38b53e6 [2022-11-25 15:29:19,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:29:19,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:29:19,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:29:19,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:29:19,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:29:19,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:29:19,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:29:19,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:29:19,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:29:19,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:29:19,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:29:19,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:29:19,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:29:19,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:29:19,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:29:19,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:29:19,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:29:19,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:29:19,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:29:19,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:29:19,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:29:19,548 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:29:19,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:29:19,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:29:19,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:29:19,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:29:19,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:29:19,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:29:19,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:29:19,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:29:19,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:29:19,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:29:19,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:29:19,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:29:19,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:29:19,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:29:19,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:29:19,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:29:19,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:29:19,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:29:19,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-25 15:29:19,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:29:19,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:29:19,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:29:19,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:29:19,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:29:19,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:29:19,619 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:29:19,619 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-25 15:29:19,619 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-25 15:29:19,619 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-25 15:29:19,620 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-25 15:29:19,621 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-25 15:29:19,621 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-25 15:29:19,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:29:19,621 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:29:19,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:29:19,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:29:19,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-25 15:29:19,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-25 15:29:19,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-25 15:29:19,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:29:19,623 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-25 15:29:19,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:29:19,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-25 15:29:19,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:29:19,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:29:19,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:29:19,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:29:19,626 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-25 15:29:19,627 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_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c9c032ca120503dfa93615a57a0bb47775014248f579f3a3fd38a4985b2298b [2022-11-25 15:29:19,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:29:19,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:29:19,995 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:29:19,996 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:29:19,999 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:29:20,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c [2022-11-25 15:29:23,180 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:29:23,366 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:29:23,366 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/sv-benchmarks/c/termination-crafted/NestedRecursion_1d.c [2022-11-25 15:29:23,372 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/data/606211877/77cfc98bd6fa45d19badbae700077a57/FLAGecaf881db [2022-11-25 15:29:23,388 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/data/606211877/77cfc98bd6fa45d19badbae700077a57 [2022-11-25 15:29:23,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:29:23,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:29:23,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:29:23,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:29:23,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:29:23,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8155aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23, skipping insertion in model container [2022-11-25 15:29:23,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:29:23,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:29:23,621 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:29:23,631 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:29:23,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:29:23,662 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:29:23,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23 WrapperNode [2022-11-25 15:29:23,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:29:23,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:29:23,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:29:23,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:29:23,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,695 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6 [2022-11-25 15:29:23,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:29:23,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:29:23,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:29:23,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:29:23,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,715 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:29:23,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:29:23,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:29:23,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:29:23,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23" (1/1) ... [2022-11-25 15:29:23,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:23,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:23,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:23,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-25 15:29:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2022-11-25 15:29:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2022-11-25 15:29:23,805 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2022-11-25 15:29:23,806 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2022-11-25 15:29:23,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:29:23,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:29:23,863 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:29:23,866 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:29:24,019 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:29:24,041 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:29:24,041 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 15:29:24,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:24 BoogieIcfgContainer [2022-11-25 15:29:24,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:29:24,045 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-25 15:29:24,045 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-25 15:29:24,050 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-25 15:29:24,051 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 15:29:24,051 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 03:29:23" (1/3) ... [2022-11-25 15:29:24,052 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e49e1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 03:29:24, skipping insertion in model container [2022-11-25 15:29:24,053 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 15:29:24,053 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:23" (2/3) ... [2022-11-25 15:29:24,053 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5e49e1ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 03:29:24, skipping insertion in model container [2022-11-25 15:29:24,053 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 15:29:24,063 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:24" (3/3) ... [2022-11-25 15:29:24,065 INFO L332 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_1d.c [2022-11-25 15:29:24,151 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-25 15:29:24,151 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-25 15:29:24,151 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-25 15:29:24,151 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-25 15:29:24,152 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-25 15:29:24,152 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-25 15:29:24,152 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-25 15:29:24,152 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-25 15:29:24,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 15:29:24,185 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-25 15:29:24,185 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:29:24,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:29:24,192 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 15:29:24,193 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:24,193 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-25 15:29:24,194 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-25 15:29:24,200 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-25 15:29:24,201 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:29:24,201 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:29:24,202 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 15:29:24,202 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:24,212 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 13#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 9#L25true call main_#t~ret6#1 := rec2(main_~x~0#1);< 16#rec2ENTRYtrue [2022-11-25 15:29:24,215 INFO L750 eck$LassoCheckResult]: Loop: 16#rec2ENTRYtrue ~j := #in~j; 17#L18true assume !(~j <= 0); 20#L20true call #t~ret3 := rec1(~j);< 22#rec1ENTRYtrue ~i := #in~i; 18#L12true assume ~i <= 0;#res := 0; 14#rec1FINALtrue assume true; 15#rec1EXITtrue >#34#return; 3#L20-1true call #t~ret4 := rec2(#t~ret3 - 1);< 16#rec2ENTRYtrue [2022-11-25 15:29:24,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:24,227 INFO L85 PathProgramCache]: Analyzing trace with hash 48738, now seen corresponding path program 1 times [2022-11-25 15:29:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:24,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939207442] [2022-11-25 15:29:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:24,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:24,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:24,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:24,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:24,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1074209557, now seen corresponding path program 1 times [2022-11-25 15:29:24,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:24,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087463671] [2022-11-25 15:29:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:24,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:24,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:29:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:24,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:24,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:24,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087463671] [2022-11-25 15:29:24,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087463671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:24,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:24,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 15:29:24,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34279171] [2022-11-25 15:29:24,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:24,673 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:29:24,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:24,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:29:24,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 15:29:24,726 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 15:29:24,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:24,821 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2022-11-25 15:29:24,823 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 34 transitions. [2022-11-25 15:29:24,826 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-25 15:29:24,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 17 states and 23 transitions. [2022-11-25 15:29:24,848 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-25 15:29:24,849 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-11-25 15:29:24,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2022-11-25 15:29:24,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:24,851 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-11-25 15:29:24,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2022-11-25 15:29:24,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-25 15:29:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-25 15:29:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2022-11-25 15:29:24,884 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-11-25 15:29:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:29:24,889 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2022-11-25 15:29:24,890 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-25 15:29:24,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 23 transitions. [2022-11-25 15:29:24,891 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-25 15:29:24,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:29:24,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:29:24,893 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 15:29:24,893 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:24,894 INFO L748 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 69#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 66#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 67#rec2ENTRY [2022-11-25 15:29:24,894 INFO L750 eck$LassoCheckResult]: Loop: 67#rec2ENTRY ~j := #in~j; 79#L18 assume !(~j <= 0); 73#L20 call #t~ret3 := rec1(~j);< 76#rec1ENTRY ~i := #in~i; 80#L12 assume !(~i <= 0); 74#L14 call #t~ret0 := rec1(~i - 2);< 76#rec1ENTRY ~i := #in~i; 80#L12 assume ~i <= 0;#res := 0; 77#rec1FINAL assume true; 78#rec1EXIT >#28#return; 71#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 76#rec1ENTRY ~i := #in~i; 80#L12 assume ~i <= 0;#res := 0; 77#rec1FINAL assume true; 78#rec1EXIT >#30#return; 72#L14-2 call #t~ret2 := rec1(#t~ret1);< 76#rec1ENTRY ~i := #in~i; 80#L12 assume ~i <= 0;#res := 0; 77#rec1FINAL assume true; 78#rec1EXIT >#32#return; 70#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 75#rec1FINAL assume true; 81#rec1EXIT >#34#return; 65#L20-1 call #t~ret4 := rec2(#t~ret3 - 1);< 67#rec2ENTRY [2022-11-25 15:29:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:24,895 INFO L85 PathProgramCache]: Analyzing trace with hash 48738, now seen corresponding path program 2 times [2022-11-25 15:29:24,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:24,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765313887] [2022-11-25 15:29:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:24,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:24,901 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:24,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:24,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash -204878921, now seen corresponding path program 1 times [2022-11-25 15:29:24,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:24,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764415928] [2022-11-25 15:29:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:24,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:24,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:24,944 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:24,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:24,946 INFO L85 PathProgramCache]: Analyzing trace with hash -482494696, now seen corresponding path program 1 times [2022-11-25 15:29:24,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:24,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006006875] [2022-11-25 15:29:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:24,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:24,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:24,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:25,502 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:29:25,502 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:29:25,502 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:29:25,503 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:29:25,503 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:29:25,503 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:25,503 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:29:25,503 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:29:25,503 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration2_Loop [2022-11-25 15:29:25,504 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:29:25,504 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:29:25,521 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:25,534 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:25,538 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:25,541 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:25,551 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:25,595 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:29:25,596 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:29:25,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:25,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:25,606 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:25,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:25,633 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:25,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-25 15:29:25,667 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:25,668 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_~j=0} Honda state: {rec2_~j=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:25,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:25,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:25,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:25,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:25,689 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:25,689 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:25,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-25 15:29:25,713 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:25,713 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#res=0} Honda state: {rec2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:25,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-11-25 15:29:25,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:25,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:25,759 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:25,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-25 15:29:25,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:25,762 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:25,797 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:25,798 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec2_#t~ret4=0} Honda state: {rec2_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:25,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:25,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:25,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:25,810 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:25,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:25,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:25,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-25 15:29:25,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:25,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:25,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:25,847 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:25,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:29:25,860 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:25,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-25 15:29:25,893 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:29:25,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:25,899 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:29:25,899 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:29:25,899 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:29:25,899 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:29:25,899 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:29:25,899 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:25,900 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:29:25,900 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:29:25,900 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration2_Loop [2022-11-25 15:29:25,900 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:29:25,900 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:29:25,901 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:25,905 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:25,909 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:25,913 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:25,923 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:25,967 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:29:25,972 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:29:25,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:25,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:25,979 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:25,988 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 [2022-11-25 15:29:26,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-25 15:29:26,002 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:26,003 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:26,003 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:26,003 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:26,003 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:26,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:26,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:26,017 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:26,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:26,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:26,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:26,029 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:26,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-25 15:29:26,042 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 [2022-11-25 15:29:26,057 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:26,058 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:26,058 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:26,058 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:26,058 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:26,059 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:26,059 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:26,069 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:26,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-11-25 15:29:26,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:26,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:26,076 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:26,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-25 15:29:26,084 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 [2022-11-25 15:29:26,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:26,097 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:26,097 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:26,097 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:26,097 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:26,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:26,104 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:26,130 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:26,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:26,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:26,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:26,142 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:26,156 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 [2022-11-25 15:29:26,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-25 15:29:26,170 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:26,170 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:26,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:26,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:26,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:26,172 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:26,172 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:26,181 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:29:26,186 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 15:29:26,186 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 15:29:26,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:26,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:26,191 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:26,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-25 15:29:26,195 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:29:26,196 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:29:26,196 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:29:26,196 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec2_#in~j) = 1*rec2_#in~j Supporting invariants [] [2022-11-25 15:29:26,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-11-25 15:29:26,208 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:29:26,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:29:26,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:26,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 15:29:26,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:26,564 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 15:29:26,568 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 8 loop predicates [2022-11-25 15:29:26,570 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 23 transitions. cyclomatic complexity: 8 Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:26,964 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 23 transitions. cyclomatic complexity: 8. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Result 102 states and 148 transitions. Complement of second has 42 states. [2022-11-25 15:29:26,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2022-11-25 15:29:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 37 transitions. [2022-11-25 15:29:26,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 3 letters. Loop has 24 letters. [2022-11-25 15:29:26,971 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:26,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 27 letters. Loop has 24 letters. [2022-11-25 15:29:26,972 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:26,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 37 transitions. Stem has 3 letters. Loop has 48 letters. [2022-11-25 15:29:26,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:26,974 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 102 states and 148 transitions. [2022-11-25 15:29:26,980 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-25 15:29:26,985 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 102 states to 90 states and 136 transitions. [2022-11-25 15:29:26,985 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-11-25 15:29:26,986 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2022-11-25 15:29:26,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 136 transitions. [2022-11-25 15:29:26,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:29:26,986 INFO L218 hiAutomatonCegarLoop]: Abstraction has 90 states and 136 transitions. [2022-11-25 15:29:26,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states and 136 transitions. [2022-11-25 15:29:27,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2022-11-25 15:29:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 36 states have internal predecessors, (38), 20 states have call successors, (20), 8 states have call predecessors, (20), 9 states have return successors, (41), 18 states have call predecessors, (41), 16 states have call successors, (41) [2022-11-25 15:29:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 99 transitions. [2022-11-25 15:29:27,005 INFO L240 hiAutomatonCegarLoop]: Abstraction has 63 states and 99 transitions. [2022-11-25 15:29:27,005 INFO L428 stractBuchiCegarLoop]: Abstraction has 63 states and 99 transitions. [2022-11-25 15:29:27,005 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-25 15:29:27,006 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 63 states and 99 transitions. [2022-11-25 15:29:27,008 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-25 15:29:27,008 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:29:27,008 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:29:27,009 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:27,009 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-25 15:29:27,009 INFO L748 eck$LassoCheckResult]: Stem: 349#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 350#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 346#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 369#rec2ENTRY ~j := #in~j; 379#L18 assume !(~j <= 0); 372#L20 call #t~ret3 := rec1(~j);< 390#rec1ENTRY ~i := #in~i; 381#L12 assume !(~i <= 0); 353#L14 call #t~ret0 := rec1(~i - 2);< 370#rec1ENTRY [2022-11-25 15:29:27,009 INFO L750 eck$LassoCheckResult]: Loop: 370#rec1ENTRY ~i := #in~i; 383#L12 assume !(~i <= 0); 352#L14 call #t~ret0 := rec1(~i - 2);< 370#rec1ENTRY [2022-11-25 15:29:27,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:27,010 INFO L85 PathProgramCache]: Analyzing trace with hash 838970620, now seen corresponding path program 1 times [2022-11-25 15:29:27,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:27,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571378297] [2022-11-25 15:29:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:27,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:27,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:27,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:27,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:27,024 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 1 times [2022-11-25 15:29:27,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:27,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007613493] [2022-11-25 15:29:27,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:27,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:27,029 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:27,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:27,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:27,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1359045147, now seen corresponding path program 2 times [2022-11-25 15:29:27,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:27,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240531210] [2022-11-25 15:29:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:27,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:27,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:27,049 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:27,080 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:29:27,081 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:29:27,081 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:29:27,081 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:29:27,081 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:29:27,081 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,081 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:29:27,082 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:29:27,082 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration3_Loop [2022-11-25 15:29:27,082 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:29:27,082 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:29:27,083 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:27,086 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:27,088 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:27,090 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:27,093 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:27,127 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:27,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,156 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:29:27,156 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:29:27,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:27,158 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:27,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:27,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:27,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-25 15:29:27,203 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:27,203 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:27,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:27,209 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:27,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-25 15:29:27,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:27,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:27,234 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:27,234 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:27,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:27,243 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:27,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-25 15:29:27,248 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:27,248 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:27,261 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:27,261 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:27,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:27,267 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:27,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-25 15:29:27,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:27,279 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:27,306 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:27,306 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:27,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:27,315 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:27,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:27,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:27,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-25 15:29:27,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:27,360 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:27,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:29:27,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:27,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-25 15:29:27,414 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:29:27,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,422 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:29:27,423 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:29:27,423 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:29:27,423 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:29:27,423 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:29:27,423 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,423 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:29:27,423 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:29:27,423 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration3_Loop [2022-11-25 15:29:27,423 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:29:27,423 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:29:27,425 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:27,428 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:27,431 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:27,434 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:27,437 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:27,444 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:27,481 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:29:27,482 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:29:27,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:27,483 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:27,496 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 [2022-11-25 15:29:27,509 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:27,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-25 15:29:27,509 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:27,510 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:27,510 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:27,510 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:27,511 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:27,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:27,522 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:27,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:27,533 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:27,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-25 15:29:27,540 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 [2022-11-25 15:29:27,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:27,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:27,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:27,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:27,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:27,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:27,555 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:27,570 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:27,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:27,580 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:27,589 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 15:29:27,602 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:27,603 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:27,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-25 15:29:27,603 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:27,603 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:27,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:27,604 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:27,604 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:27,614 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:27,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:27,626 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:27,635 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 [2022-11-25 15:29:27,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-25 15:29:27,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:27,648 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:27,648 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:27,648 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:27,648 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:27,649 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:27,649 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:27,666 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:27,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:27,677 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:27,681 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 [2022-11-25 15:29:27,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-25 15:29:27,696 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:27,696 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:27,697 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:27,697 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:27,697 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:27,699 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:27,699 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:27,722 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:29:27,725 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-25 15:29:27,725 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 15:29:27,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:27,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:27,727 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:27,730 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:29:27,731 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:29:27,731 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:29:27,731 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2022-11-25 15:29:27,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-25 15:29:27,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:27,741 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:29:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:27,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 15:29:27,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:27,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:29:27,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:27,838 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 [2022-11-25 15:29:27,839 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 63 states and 99 transitions. cyclomatic complexity: 40 Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:29:27,896 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 63 states and 99 transitions. cyclomatic complexity: 40. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 109 states and 166 transitions. Complement of second has 13 states. [2022-11-25 15:29:27,897 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 [2022-11-25 15:29:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:29:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2022-11-25 15:29:27,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 9 letters. Loop has 3 letters. [2022-11-25 15:29:27,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:27,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 12 letters. Loop has 3 letters. [2022-11-25 15:29:27,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:27,900 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 9 letters. Loop has 6 letters. [2022-11-25 15:29:27,900 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:27,900 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 109 states and 166 transitions. [2022-11-25 15:29:27,905 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-25 15:29:27,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 109 states to 97 states and 154 transitions. [2022-11-25 15:29:27,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2022-11-25 15:29:27,911 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2022-11-25 15:29:27,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 154 transitions. [2022-11-25 15:29:27,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:29:27,912 INFO L218 hiAutomatonCegarLoop]: Abstraction has 97 states and 154 transitions. [2022-11-25 15:29:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 154 transitions. [2022-11-25 15:29:27,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2022-11-25 15:29:27,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 60 states have internal predecessors, (62), 26 states have call successors, (26), 14 states have call predecessors, (26), 13 states have return successors, (56), 18 states have call predecessors, (56), 22 states have call successors, (56) [2022-11-25 15:29:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 144 transitions. [2022-11-25 15:29:27,925 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 144 transitions. [2022-11-25 15:29:27,925 INFO L428 stractBuchiCegarLoop]: Abstraction has 93 states and 144 transitions. [2022-11-25 15:29:27,925 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-25 15:29:27,926 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 93 states and 144 transitions. [2022-11-25 15:29:27,928 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-25 15:29:27,928 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:29:27,928 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:29:27,929 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:27,929 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-25 15:29:27,929 INFO L748 eck$LassoCheckResult]: Stem: 589#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 590#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 585#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 613#rec2ENTRY ~j := #in~j; 622#L18 assume !(~j <= 0); 625#L20 call #t~ret3 := rec1(~j);< 652#rec1ENTRY ~i := #in~i; 651#L12 assume !(~i <= 0); 595#L14 call #t~ret0 := rec1(~i - 2);< 630#rec1ENTRY ~i := #in~i; 628#L12 assume ~i <= 0;#res := 0; 616#rec1FINAL assume true; 617#rec1EXIT >#28#return; 599#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 614#rec1ENTRY [2022-11-25 15:29:27,930 INFO L750 eck$LassoCheckResult]: Loop: 614#rec1ENTRY ~i := #in~i; 650#L12 assume !(~i <= 0); 594#L14 call #t~ret0 := rec1(~i - 2);< 614#rec1ENTRY [2022-11-25 15:29:27,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash 372282091, now seen corresponding path program 1 times [2022-11-25 15:29:27,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:27,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964342879] [2022-11-25 15:29:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:27,946 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:27,954 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:27,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:27,955 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 2 times [2022-11-25 15:29:27,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:27,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608811392] [2022-11-25 15:29:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:27,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:27,959 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:27,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:27,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:27,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1050214860, now seen corresponding path program 2 times [2022-11-25 15:29:27,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:27,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093107607] [2022-11-25 15:29:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:27,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:29:28,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:28,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093107607] [2022-11-25 15:29:28,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093107607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:28,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:28,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 15:29:28,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554467275] [2022-11-25 15:29:28,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:28,102 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:29:28,102 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:29:28,102 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:29:28,103 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:29:28,103 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:29:28,103 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:28,103 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:29:28,103 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:29:28,103 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration4_Loop [2022-11-25 15:29:28,103 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:29:28,104 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:29:28,105 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:28,107 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:28,113 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:28,115 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:28,117 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:28,120 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:28,147 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:29:28,147 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:29:28,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:28,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:28,148 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:28,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:28,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:28,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-25 15:29:28,180 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:28,180 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:28,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:28,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:28,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:28,187 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:28,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-25 15:29:28,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:28,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:28,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:28,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:28,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:28,241 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:28,246 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:29:28,247 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:28,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-25 15:29:28,351 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:29:28,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:28,357 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:29:28,357 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:29:28,357 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:29:28,357 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:29:28,357 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:29:28,357 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:28,357 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:29:28,357 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:29:28,357 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration4_Loop [2022-11-25 15:29:28,357 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:29:28,358 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:29:28,359 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:28,363 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:28,370 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:28,372 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:28,375 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:28,377 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:28,409 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:29:28,410 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:29:28,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:28,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:28,411 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:28,420 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 [2022-11-25 15:29:28,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-25 15:29:28,433 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:28,433 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:28,433 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:28,433 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:28,433 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:28,434 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:28,434 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:28,445 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:28,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:28,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:28,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:28,451 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:28,456 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 [2022-11-25 15:29:28,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-25 15:29:28,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:28,469 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:28,470 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:28,470 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:28,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:28,471 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:28,471 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:28,487 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:29:28,492 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-25 15:29:28,492 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 15:29:28,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:28,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:28,495 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:28,497 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:29:28,497 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:29:28,497 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:29:28,497 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2022-11-25 15:29:28,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-25 15:29:28,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:28,506 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:29:28,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 15:29:28,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:28,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:29:28,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:28,669 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 [2022-11-25 15:29:28,669 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 93 states and 144 transitions. cyclomatic complexity: 57 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-25 15:29:28,762 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 93 states and 144 transitions. cyclomatic complexity: 57. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 133 states and 208 transitions. Complement of second has 14 states. [2022-11-25 15:29:28,766 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 [2022-11-25 15:29:28,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-25 15:29:28,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-11-25 15:29:28,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 14 letters. Loop has 3 letters. [2022-11-25 15:29:28,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:28,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 17 letters. Loop has 3 letters. [2022-11-25 15:29:28,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:28,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 14 letters. Loop has 6 letters. [2022-11-25 15:29:28,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:28,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 133 states and 208 transitions. [2022-11-25 15:29:28,773 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-25 15:29:28,781 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 133 states to 121 states and 196 transitions. [2022-11-25 15:29:28,784 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2022-11-25 15:29:28,785 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 52 [2022-11-25 15:29:28,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 196 transitions. [2022-11-25 15:29:28,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:29:28,787 INFO L218 hiAutomatonCegarLoop]: Abstraction has 121 states and 196 transitions. [2022-11-25 15:29:28,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 196 transitions. [2022-11-25 15:29:28,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2022-11-25 15:29:28,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 68 states have (on average 1.1764705882352942) internal successors, (80), 76 states have internal predecessors, (80), 32 states have call successors, (32), 18 states have call predecessors, (32), 17 states have return successors, (74), 22 states have call predecessors, (74), 28 states have call successors, (74) [2022-11-25 15:29:28,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 186 transitions. [2022-11-25 15:29:28,814 INFO L240 hiAutomatonCegarLoop]: Abstraction has 117 states and 186 transitions. [2022-11-25 15:29:28,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:28,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:29:28,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:29:28,815 INFO L87 Difference]: Start difference. First operand 117 states and 186 transitions. Second operand has 6 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 3 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) [2022-11-25 15:29:28,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:28,871 INFO L93 Difference]: Finished difference Result 130 states and 196 transitions. [2022-11-25 15:29:28,871 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 196 transitions. [2022-11-25 15:29:28,875 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2022-11-25 15:29:28,878 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 128 states and 194 transitions. [2022-11-25 15:29:28,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 60 [2022-11-25 15:29:28,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2022-11-25 15:29:28,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 194 transitions. [2022-11-25 15:29:28,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:29:28,879 INFO L218 hiAutomatonCegarLoop]: Abstraction has 128 states and 194 transitions. [2022-11-25 15:29:28,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states and 194 transitions. [2022-11-25 15:29:28,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 105. [2022-11-25 15:29:28,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 60 states have (on average 1.1333333333333333) internal successors, (68), 66 states have internal predecessors, (68), 30 states have call successors, (30), 16 states have call predecessors, (30), 15 states have return successors, (60), 22 states have call predecessors, (60), 26 states have call successors, (60) [2022-11-25 15:29:28,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 158 transitions. [2022-11-25 15:29:28,890 INFO L240 hiAutomatonCegarLoop]: Abstraction has 105 states and 158 transitions. [2022-11-25 15:29:28,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:29:28,892 INFO L428 stractBuchiCegarLoop]: Abstraction has 105 states and 158 transitions. [2022-11-25 15:29:28,892 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-25 15:29:28,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 105 states and 158 transitions. [2022-11-25 15:29:28,893 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-25 15:29:28,893 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:29:28,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:29:28,913 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:28,914 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:28,915 INFO L748 eck$LassoCheckResult]: Stem: 1161#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1162#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 1157#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 1185#rec2ENTRY ~j := #in~j; 1225#L18 assume !(~j <= 0); 1216#L20 call #t~ret3 := rec1(~j);< 1224#rec1ENTRY ~i := #in~i; 1223#L12 assume !(~i <= 0); 1169#L14 call #t~ret0 := rec1(~i - 2);< 1221#rec1ENTRY ~i := #in~i; 1219#L12 assume !(~i <= 0); 1164#L14 call #t~ret0 := rec1(~i - 2);< 1218#rec1ENTRY ~i := #in~i; 1220#L12 assume ~i <= 0;#res := 0; 1235#rec1FINAL assume true; 1198#rec1EXIT >#28#return; 1188#L14-1 [2022-11-25 15:29:28,915 INFO L750 eck$LassoCheckResult]: Loop: 1188#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1189#rec1ENTRY ~i := #in~i; 1207#L12 assume ~i <= 0;#res := 0; 1192#rec1FINAL assume true; 1194#rec1EXIT >#30#return; 1166#L14-2 call #t~ret2 := rec1(#t~ret1);< 1186#rec1ENTRY ~i := #in~i; 1231#L12 assume !(~i <= 0); 1168#L14 call #t~ret0 := rec1(~i - 2);< 1186#rec1ENTRY ~i := #in~i; 1231#L12 assume ~i <= 0;#res := 0; 1230#rec1FINAL assume true; 1229#rec1EXIT >#28#return; 1188#L14-1 [2022-11-25 15:29:28,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1325197585, now seen corresponding path program 1 times [2022-11-25 15:29:28,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:28,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311864810] [2022-11-25 15:29:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:28,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:28,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:28,935 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:28,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:28,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:28,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:28,954 INFO L85 PathProgramCache]: Analyzing trace with hash 949089090, now seen corresponding path program 1 times [2022-11-25 15:29:28,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:28,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223295358] [2022-11-25 15:29:28,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:28,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-11-25 15:29:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 15:29:29,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:29,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223295358] [2022-11-25 15:29:29,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223295358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:29,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611423395] [2022-11-25 15:29:29,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:29,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:29,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:29,075 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:29,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-25 15:29:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:29:29,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:29,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:29,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611423395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:29,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:29,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2022-11-25 15:29:29,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114218067] [2022-11-25 15:29:29,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:29,137 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:29:29,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:29,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:29:29,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:29:29,138 INFO L87 Difference]: Start difference. First operand 105 states and 158 transitions. cyclomatic complexity: 59 Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 15:29:29,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:29,197 INFO L93 Difference]: Finished difference Result 120 states and 174 transitions. [2022-11-25 15:29:29,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 120 states and 174 transitions. [2022-11-25 15:29:29,200 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-25 15:29:29,202 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 120 states to 115 states and 165 transitions. [2022-11-25 15:29:29,203 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2022-11-25 15:29:29,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51 [2022-11-25 15:29:29,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 165 transitions. [2022-11-25 15:29:29,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:29:29,203 INFO L218 hiAutomatonCegarLoop]: Abstraction has 115 states and 165 transitions. [2022-11-25 15:29:29,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 165 transitions. [2022-11-25 15:29:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2022-11-25 15:29:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 64 states have (on average 1.109375) internal successors, (71), 69 states have internal predecessors, (71), 32 states have call successors, (32), 18 states have call predecessors, (32), 16 states have return successors, (59), 24 states have call predecessors, (59), 28 states have call successors, (59) [2022-11-25 15:29:29,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 162 transitions. [2022-11-25 15:29:29,214 INFO L240 hiAutomatonCegarLoop]: Abstraction has 112 states and 162 transitions. [2022-11-25 15:29:29,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:29:29,215 INFO L428 stractBuchiCegarLoop]: Abstraction has 112 states and 162 transitions. [2022-11-25 15:29:29,215 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-25 15:29:29,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 112 states and 162 transitions. [2022-11-25 15:29:29,217 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 9 [2022-11-25 15:29:29,217 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:29:29,217 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:29:29,218 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:29,218 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-25 15:29:29,218 INFO L748 eck$LassoCheckResult]: Stem: 1445#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1446#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 1441#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 1462#rec2ENTRY ~j := #in~j; 1525#L18 assume !(~j <= 0); 1448#L20 call #t~ret3 := rec1(~j);< 1511#rec1ENTRY ~i := #in~i; 1509#L12 assume !(~i <= 0); 1471#L14 call #t~ret0 := rec1(~i - 2);< 1506#rec1ENTRY ~i := #in~i; 1505#L12 assume !(~i <= 0); 1469#L14 call #t~ret0 := rec1(~i - 2);< 1504#rec1ENTRY ~i := #in~i; 1507#L12 assume ~i <= 0;#res := 0; 1521#rec1FINAL assume true; 1518#rec1EXIT >#28#return; 1476#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1477#rec1ENTRY ~i := #in~i; 1492#L12 assume ~i <= 0;#res := 0; 1480#rec1FINAL assume true; 1481#rec1EXIT >#30#return; 1463#L14-2 call #t~ret2 := rec1(#t~ret1);< 1473#rec1ENTRY ~i := #in~i; 1524#L12 assume ~i <= 0;#res := 0; 1522#rec1FINAL assume true; 1484#rec1EXIT >#32#return; 1485#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 1520#rec1FINAL assume true; 1517#rec1EXIT >#28#return; 1465#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 1494#rec1ENTRY [2022-11-25 15:29:29,218 INFO L750 eck$LassoCheckResult]: Loop: 1494#rec1ENTRY ~i := #in~i; 1512#L12 assume !(~i <= 0); 1466#L14 call #t~ret0 := rec1(~i - 2);< 1494#rec1ENTRY [2022-11-25 15:29:29,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:29,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1060897207, now seen corresponding path program 1 times [2022-11-25 15:29:29,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:29,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887593895] [2022-11-25 15:29:29,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:29,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:29,242 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:29,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 3 times [2022-11-25 15:29:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:29,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109592385] [2022-11-25 15:29:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:29,271 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:29,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:29,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:29,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1475637376, now seen corresponding path program 2 times [2022-11-25 15:29:29,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:29,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735809924] [2022-11-25 15:29:29,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:29,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 15:29:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:29:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:29:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-25 15:29:29,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:29,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735809924] [2022-11-25 15:29:29,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735809924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:29,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893776775] [2022-11-25 15:29:29,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:29:29,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:29,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:29,451 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:29,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-25 15:29:29,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:29:29,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:29:29,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:29:29,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:29,548 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-25 15:29:29,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:29,688 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-25 15:29:29,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893776775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:29:29,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:29:29,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-11-25 15:29:29,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937471806] [2022-11-25 15:29:29,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:29:29,733 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:29:29,734 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:29:29,734 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:29:29,734 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:29:29,734 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:29:29,734 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:29,735 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:29:29,735 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:29:29,735 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration6_Loop [2022-11-25 15:29:29,735 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:29:29,735 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:29:29,737 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:29,740 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:29,744 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:29,747 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:29,750 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:29,753 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:29,793 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:29:29,793 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:29:29,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:29,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:29,796 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:29,800 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:29,800 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:29,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-25 15:29:29,830 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:29,830 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#res=0} Honda state: {rec1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:29,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:29,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:29,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:29,840 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:29,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:29,847 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:29,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-25 15:29:29,869 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:29,869 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:29,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:29,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:29,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:29,876 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:29,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:29,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:29,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-25 15:29:29,910 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:29,910 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret2=0} Honda state: {rec1_#t~ret2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:29,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:29,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:29,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:29,921 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:29,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:29,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:29,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-25 15:29:29,954 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:29,954 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_~i=0} Honda state: {rec1_~i=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:29,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:29,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:29,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:29,966 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:29,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:29,970 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:29,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-25 15:29:30,010 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:30,011 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret1=0} Honda state: {rec1_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:30,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:30,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:30,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:30,021 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:30,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:30,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:30,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-25 15:29:30,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:30,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:30,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:30,054 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:30,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-25 15:29:30,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:29:30,057 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:30,096 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:29:30,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:30,106 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:29:30,106 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:29:30,106 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:29:30,106 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:29:30,106 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:29:30,106 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:30,106 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:29:30,106 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:29:30,106 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration6_Loop [2022-11-25 15:29:30,106 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:29:30,106 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:29:30,107 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:30,111 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:30,114 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:30,118 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:30,120 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:30,123 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:30,157 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:29:30,157 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:29:30,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:30,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:30,159 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:30,167 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 [2022-11-25 15:29:30,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-25 15:29:30,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:30,181 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:30,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:30,181 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:30,182 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:30,182 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:30,182 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:30,196 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:30,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:30,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:30,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:30,207 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:30,215 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 [2022-11-25 15:29:30,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-25 15:29:30,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:30,229 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:30,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:30,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:30,230 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:30,230 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:30,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:30,246 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:30,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2022-11-25 15:29:30,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:30,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:30,251 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:30,259 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 [2022-11-25 15:29:30,271 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:30,271 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:30,271 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:30,271 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:30,271 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:30,272 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:30,272 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:30,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-25 15:29:30,282 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:30,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:30,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:30,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:30,291 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:30,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-25 15:29:30,296 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 [2022-11-25 15:29:30,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:30,308 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:30,308 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:30,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:30,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:30,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:30,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:30,318 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:30,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:30,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:30,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:30,327 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:30,331 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 [2022-11-25 15:29:30,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-25 15:29:30,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:30,344 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:30,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:30,344 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:30,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:30,345 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:30,345 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:30,362 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:29:30,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:30,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:30,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:30,373 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:30,378 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-25 15:29:30,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-25 15:29:30,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:30,390 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:30,390 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:30,390 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:30,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:30,391 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:30,391 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:30,404 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:29:30,406 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-25 15:29:30,406 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 15:29:30,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:30,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:30,410 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:30,412 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:29:30,412 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:29:30,412 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:29:30,412 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2022-11-25 15:29:30,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-25 15:29:30,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2022-11-25 15:29:30,419 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:29:30,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:29:30,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:30,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:30,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:29:30,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:30,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:30,901 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 [2022-11-25 15:29:30,903 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 112 states and 162 transitions. cyclomatic complexity: 56 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:30,976 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 112 states and 162 transitions. cyclomatic complexity: 56. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 129 states and 180 transitions. Complement of second has 7 states. [2022-11-25 15:29:30,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-25 15:29:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-25 15:29:30,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 30 letters. Loop has 3 letters. [2022-11-25 15:29:30,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:30,980 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:29:30,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:31,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:29:31,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:31,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:29:31,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:31,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:31,368 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 [2022-11-25 15:29:31,369 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 112 states and 162 transitions. cyclomatic complexity: 56 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:31,432 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 112 states and 162 transitions. cyclomatic complexity: 56. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 129 states and 180 transitions. Complement of second has 7 states. [2022-11-25 15:29:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-25 15:29:31,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-25 15:29:31,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 30 letters. Loop has 3 letters. [2022-11-25 15:29:31,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:31,438 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:29:31,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:31,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:29:31,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:31,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:29:31,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:31,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:31,823 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 [2022-11-25 15:29:31,823 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 112 states and 162 transitions. cyclomatic complexity: 56 Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:31,923 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 112 states and 162 transitions. cyclomatic complexity: 56. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 157 states and 219 transitions. Complement of second has 13 states. [2022-11-25 15:29:31,924 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 [2022-11-25 15:29:31,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2022-11-25 15:29:31,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 30 letters. Loop has 3 letters. [2022-11-25 15:29:31,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:31,929 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 33 letters. Loop has 3 letters. [2022-11-25 15:29:31,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:31,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 30 letters. Loop has 6 letters. [2022-11-25 15:29:31,932 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:31,932 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 157 states and 219 transitions. [2022-11-25 15:29:31,936 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2022-11-25 15:29:31,942 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 157 states to 139 states and 201 transitions. [2022-11-25 15:29:31,942 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2022-11-25 15:29:31,942 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 58 [2022-11-25 15:29:31,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 201 transitions. [2022-11-25 15:29:31,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:29:31,943 INFO L218 hiAutomatonCegarLoop]: Abstraction has 139 states and 201 transitions. [2022-11-25 15:29:31,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states and 201 transitions. [2022-11-25 15:29:31,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 120. [2022-11-25 15:29:31,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 75 states have internal predecessors, (79), 32 states have call successors, (32), 20 states have call predecessors, (32), 18 states have return successors, (59), 24 states have call predecessors, (59), 28 states have call successors, (59) [2022-11-25 15:29:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 170 transitions. [2022-11-25 15:29:31,978 INFO L240 hiAutomatonCegarLoop]: Abstraction has 120 states and 170 transitions. [2022-11-25 15:29:31,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:31,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:29:31,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:29:31,979 INFO L87 Difference]: Start difference. First operand 120 states and 170 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 15:29:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:32,080 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2022-11-25 15:29:32,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 116 transitions. [2022-11-25 15:29:32,083 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-25 15:29:32,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 63 states and 75 transitions. [2022-11-25 15:29:32,086 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-25 15:29:32,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-11-25 15:29:32,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 75 transitions. [2022-11-25 15:29:32,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:29:32,087 INFO L218 hiAutomatonCegarLoop]: Abstraction has 63 states and 75 transitions. [2022-11-25 15:29:32,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 75 transitions. [2022-11-25 15:29:32,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2022-11-25 15:29:32,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.121212121212121) internal successors, (37), 36 states have internal predecessors, (37), 14 states have call successors, (14), 10 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-25 15:29:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2022-11-25 15:29:32,093 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 65 transitions. [2022-11-25 15:29:32,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 15:29:32,094 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 65 transitions. [2022-11-25 15:29:32,095 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-25 15:29:32,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 65 transitions. [2022-11-25 15:29:32,095 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-25 15:29:32,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:29:32,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:29:32,097 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:32,097 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-25 15:29:32,098 INFO L748 eck$LassoCheckResult]: Stem: 2781#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2782#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet5#1, main_#t~ret6#1, main_~x~0#1;main_~x~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1; 2779#L25 call main_#t~ret6#1 := rec2(main_~x~0#1);< 2789#rec2ENTRY ~j := #in~j; 2800#L18 assume !(~j <= 0); 2794#L20 call #t~ret3 := rec1(~j);< 2809#rec1ENTRY ~i := #in~i; 2820#L12 assume !(~i <= 0); 2787#L14 call #t~ret0 := rec1(~i - 2);< 2822#rec1ENTRY ~i := #in~i; 2823#L12 assume ~i <= 0;#res := 0; 2821#rec1FINAL assume true; 2799#rec1EXIT >#28#return; 2792#L14-1 call #t~ret1 := rec1(#t~ret0 - 1);< 2795#rec1ENTRY ~i := #in~i; 2806#L12 assume ~i <= 0;#res := 0; 2796#rec1FINAL assume true; 2798#rec1EXIT >#30#return; 2814#L14-2 call #t~ret2 := rec1(#t~ret1);< 2791#rec1ENTRY ~i := #in~i; 2816#L12 assume ~i <= 0;#res := 0; 2815#rec1FINAL assume true; 2813#rec1EXIT >#32#return; 2812#L14-3 #res := 1 + #t~ret2;havoc #t~ret0;havoc #t~ret1;havoc #t~ret2; 2811#rec1FINAL assume true; 2810#rec1EXIT >#34#return; 2778#L20-1 call #t~ret4 := rec2(#t~ret3 - 1);< 2780#rec2ENTRY ~j := #in~j; 2802#L18 assume !(~j <= 0); 2803#L20 call #t~ret3 := rec1(~j);< 2807#rec1ENTRY [2022-11-25 15:29:32,098 INFO L750 eck$LassoCheckResult]: Loop: 2807#rec1ENTRY ~i := #in~i; 2804#L12 assume !(~i <= 0); 2805#L14 call #t~ret0 := rec1(~i - 2);< 2807#rec1ENTRY [2022-11-25 15:29:32,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:32,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1256061253, now seen corresponding path program 2 times [2022-11-25 15:29:32,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:32,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962389898] [2022-11-25 15:29:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:32,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:32,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 15:29:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 15:29:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 15:29:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 15:29:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:32,195 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 15:29:32,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:32,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962389898] [2022-11-25 15:29:32,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962389898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:32,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236456389] [2022-11-25 15:29:32,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:29:32,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:32,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:32,197 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:32,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-11-25 15:29:32,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 15:29:32,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:29:32,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:29:32,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 15:29:32,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 15:29:32,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236456389] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:29:32,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:29:32,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 8 [2022-11-25 15:29:32,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729862810] [2022-11-25 15:29:32,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:29:32,366 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 15:29:32,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:32,367 INFO L85 PathProgramCache]: Analyzing trace with hash 29942, now seen corresponding path program 4 times [2022-11-25 15:29:32,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:32,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337214875] [2022-11-25 15:29:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:32,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:32,371 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:29:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:29:32,374 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:29:32,399 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:29:32,400 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:29:32,400 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:29:32,400 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:29:32,400 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:29:32,400 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:32,400 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:29:32,400 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:29:32,400 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration7_Loop [2022-11-25 15:29:32,401 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:29:32,401 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:29:32,403 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:32,405 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:32,410 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:32,412 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:32,414 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:32,416 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:32,443 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:29:32,443 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:29:32,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:32,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:32,444 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:32,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-25 15:29:32,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:32,448 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:32,459 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:29:32,459 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {rec1_#t~ret0=0} Honda state: {rec1_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:29:32,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:32,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:32,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:32,463 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:32,466 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:29:32,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-25 15:29:32,466 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:32,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:32,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:32,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:32,481 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:32,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-11-25 15:29:32,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:29:32,484 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:29:32,526 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:29:32,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:32,530 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:29:32,531 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:29:32,531 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:29:32,531 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:29:32,531 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:29:32,531 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:32,531 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:29:32,531 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:29:32,531 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_1d.c_Iteration7_Loop [2022-11-25 15:29:32,531 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:29:32,531 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:29:32,532 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:32,542 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:32,545 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:32,547 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:32,549 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:32,551 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:29:32,575 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:29:32,576 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:29:32,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:32,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:32,577 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:32,586 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 [2022-11-25 15:29:32,599 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:29:32,599 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:29:32,599 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:29:32,599 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:29:32,599 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:29:32,600 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:29:32,600 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:29:32,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-11-25 15:29:32,607 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:29:32,610 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-25 15:29:32,610 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 15:29:32,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:29:32,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:32,613 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:32,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-25 15:29:32,614 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:29:32,614 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:29:32,614 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:29:32,614 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(rec1_#in~i) = 1*rec1_#in~i Supporting invariants [] [2022-11-25 15:29:32,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:32,619 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:29:32,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:32,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:29:32,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:32,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:29:32,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:32,931 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 [2022-11-25 15:29:32,931 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 65 transitions. cyclomatic complexity: 15 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:32,995 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 65 transitions. cyclomatic complexity: 15. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 64 states and 76 transitions. Complement of second has 13 states. [2022-11-25 15:29:32,996 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 [2022-11-25 15:29:32,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2022-11-25 15:29:32,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 30 letters. Loop has 3 letters. [2022-11-25 15:29:32,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:32,997 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:29:33,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:33,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:29:33,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:33,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:33,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:29:33,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:33,305 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 [2022-11-25 15:29:33,305 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 65 transitions. cyclomatic complexity: 15 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:33,365 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 65 transitions. cyclomatic complexity: 15. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 64 states and 76 transitions. Complement of second has 13 states. [2022-11-25 15:29:33,368 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 [2022-11-25 15:29:33,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:33,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2022-11-25 15:29:33,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 30 letters. Loop has 3 letters. [2022-11-25 15:29:33,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:33,369 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:29:33,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:33,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 15:29:33,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:33,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:29:33,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:33,674 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 [2022-11-25 15:29:33,675 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 54 states and 65 transitions. cyclomatic complexity: 15 Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:33,756 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 54 states and 65 transitions. cyclomatic complexity: 15. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Result 78 states and 90 transitions. Complement of second has 13 states. [2022-11-25 15:29:33,757 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 [2022-11-25 15:29:33,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 15:29:33,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2022-11-25 15:29:33,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 30 letters. Loop has 3 letters. [2022-11-25 15:29:33,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:33,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 33 letters. Loop has 3 letters. [2022-11-25 15:29:33,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:33,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 30 letters. Loop has 6 letters. [2022-11-25 15:29:33,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:29:33,759 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 78 states and 90 transitions. [2022-11-25 15:29:33,760 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 15:29:33,760 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 78 states to 0 states and 0 transitions. [2022-11-25 15:29:33,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-25 15:29:33,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-25 15:29:33,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-25 15:29:33,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:33,761 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 15:29:33,761 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 15:29:33,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 15:29:33,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:29:33,762 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 15:29:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:29:33,762 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-25 15:29:33,762 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-25 15:29:33,762 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 15:29:33,762 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 15:29:33,762 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-25 15:29:33,763 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-25 15:29:33,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-25 15:29:33,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:33,763 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 15:29:33,763 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 15:29:33,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 15:29:33,764 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 15:29:33,764 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-25 15:29:33,764 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-25 15:29:33,764 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-25 15:29:33,764 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-25 15:29:33,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 03:29:33 BoogieIcfgContainer [2022-11-25 15:29:33,771 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-25 15:29:33,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:29:33,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:29:33,772 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:29:33,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:24" (3/4) ... [2022-11-25 15:29:33,775 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 15:29:33,775 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:29:33,775 INFO L158 Benchmark]: Toolchain (without parser) took 10383.16ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 129.3MB in the beginning and 96.3MB in the end (delta: 32.9MB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2022-11-25 15:29:33,776 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:29:33,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.60ms. Allocated memory is still 174.1MB. Free memory was 129.3MB in the beginning and 120.2MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 15:29:33,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.73ms. Allocated memory is still 174.1MB. Free memory was 119.6MB in the beginning and 118.8MB in the end (delta: 812.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:29:33,777 INFO L158 Benchmark]: Boogie Preprocessor took 20.18ms. Allocated memory is still 174.1MB. Free memory was 118.8MB in the beginning and 117.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:29:33,777 INFO L158 Benchmark]: RCFGBuilder took 324.17ms. Allocated memory is still 174.1MB. Free memory was 117.5MB in the beginning and 108.3MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 15:29:33,777 INFO L158 Benchmark]: BuchiAutomizer took 9726.05ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 108.3MB in the beginning and 96.3MB in the end (delta: 11.9MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. [2022-11-25 15:29:33,778 INFO L158 Benchmark]: Witness Printer took 3.48ms. Allocated memory is still 209.7MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:29:33,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 82.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.60ms. Allocated memory is still 174.1MB. Free memory was 129.3MB in the beginning and 120.2MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.73ms. Allocated memory is still 174.1MB. Free memory was 119.6MB in the beginning and 118.8MB in the end (delta: 812.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.18ms. Allocated memory is still 174.1MB. Free memory was 118.8MB in the beginning and 117.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 324.17ms. Allocated memory is still 174.1MB. Free memory was 117.5MB in the beginning and 108.3MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 9726.05ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 108.3MB in the beginning and 96.3MB in the end (delta: 11.9MB). Peak memory consumption was 48.3MB. Max. memory is 16.1GB. * Witness Printer took 3.48ms. Allocated memory is still 209.7MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(j) and consists of 10 locations. One deterministic module has affine ranking function \old(i) and consists of 4 locations. One deterministic module has affine ranking function \old(i) and consists of 5 locations. One nondeterministic module has affine ranking function \old(i) and consists of 5 locations. One nondeterministic module has affine ranking function \old(i) and consists of 5 locations. 5 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.6s and 8 iterations. TraceHistogramMax:5. Analysis of lassos took 5.0s. Construction of modules took 0.4s. Büchi inclusion checks took 3.8s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 7. Automata minimization 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 89 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 22/24 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 221 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 504 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 305 mSDsCounter, 133 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 353 IncrementalHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 133 mSolverCounterUnsat, 199 mSDtfsCounter, 353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf94 smp100 dnf100 smp100 tf112 neg94 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 44ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 14 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-25 15:29:33,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:33,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-25 15:29:34,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-25 15:29:34,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bc3ee01-ccbf-42ed-9f5a-3293dbf55bd6/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE