./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt --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 1b7166d94206693c3f254a3c1de8d5825f8510fb .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-12 23:59:31,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-12 23:59:31,263 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-12 23:59:31,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-12 23:59:31,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-12 23:59:31,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-12 23:59:31,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-12 23:59:31,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-12 23:59:31,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-12 23:59:31,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-12 23:59:31,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-12 23:59:31,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-12 23:59:31,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-12 23:59:31,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-12 23:59:31,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-12 23:59:31,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-12 23:59:31,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-12 23:59:31,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-12 23:59:31,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-12 23:59:31,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-12 23:59:31,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-12 23:59:31,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-12 23:59:31,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-12 23:59:31,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-12 23:59:31,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-12 23:59:31,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-12 23:59:31,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-12 23:59:31,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-12 23:59:31,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-12 23:59:31,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-12 23:59:31,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-12 23:59:31,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-12 23:59:31,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-12 23:59:31,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-12 23:59:31,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-12 23:59:31,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-12 23:59:31,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-12 23:59:31,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-12 23:59:31,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-12 23:59:31,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-12 23:59:31,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-12 23:59:31,404 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-12 23:59:31,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-12 23:59:31,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-12 23:59:31,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-12 23:59:31,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-12 23:59:31,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-12 23:59:31,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-12 23:59:31,461 INFO L138 SettingsManager]: * Use SBE=true [2021-10-12 23:59:31,461 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-12 23:59:31,461 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-12 23:59:31,462 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-12 23:59:31,463 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-12 23:59:31,463 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-12 23:59:31,463 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-12 23:59:31,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-12 23:59:31,464 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-12 23:59:31,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-12 23:59:31,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-12 23:59:31,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-12 23:59:31,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-12 23:59:31,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-12 23:59:31,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-12 23:59:31,466 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-12 23:59:31,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-12 23:59:31,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-12 23:59:31,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-12 23:59:31,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-12 23:59:31,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-12 23:59:31,467 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-12 23:59:31,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-12 23:59:31,468 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-12 23:59:31,469 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_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b7166d94206693c3f254a3c1de8d5825f8510fb [2021-10-12 23:59:31,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-12 23:59:31,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-12 23:59:31,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-12 23:59:31,746 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-12 23:59:31,747 INFO L275 PluginConnector]: CDTParser initialized [2021-10-12 23:59:31,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2021-10-12 23:59:31,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/data/c745f99ef/fff6ac45756f4e3b8e732150dec3a40f/FLAGc75f2fe53 [2021-10-12 23:59:32,249 INFO L306 CDTParser]: Found 1 translation units. [2021-10-12 23:59:32,250 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/sv-benchmarks/c/termination-crafted/NestedRecursion_2b.c [2021-10-12 23:59:32,256 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/data/c745f99ef/fff6ac45756f4e3b8e732150dec3a40f/FLAGc75f2fe53 [2021-10-12 23:59:32,273 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/data/c745f99ef/fff6ac45756f4e3b8e732150dec3a40f [2021-10-12 23:59:32,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-12 23:59:32,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-12 23:59:32,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:32,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-12 23:59:32,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-12 23:59:32,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:32" (1/1) ... [2021-10-12 23:59:32,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5ec75d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32, skipping insertion in model container [2021-10-12 23:59:32,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:59:32" (1/1) ... [2021-10-12 23:59:32,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-12 23:59:32,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-12 23:59:32,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:32,525 INFO L203 MainTranslator]: Completed pre-run [2021-10-12 23:59:32,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-12 23:59:32,557 INFO L208 MainTranslator]: Completed translation [2021-10-12 23:59:32,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32 WrapperNode [2021-10-12 23:59:32,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-12 23:59:32,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:32,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-12 23:59:32,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-12 23:59:32,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32" (1/1) ... [2021-10-12 23:59:32,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32" (1/1) ... [2021-10-12 23:59:32,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-12 23:59:32,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-12 23:59:32,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-12 23:59:32,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-12 23:59:32,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32" (1/1) ... [2021-10-12 23:59:32,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32" (1/1) ... [2021-10-12 23:59:32,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32" (1/1) ... [2021-10-12 23:59:32,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32" (1/1) ... [2021-10-12 23:59:32,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32" (1/1) ... [2021-10-12 23:59:32,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32" (1/1) ... [2021-10-12 23:59:32,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32" (1/1) ... [2021-10-12 23:59:32,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-12 23:59:32,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-12 23:59:32,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-12 23:59:32,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-12 23:59:32,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32" (1/1) ... [2021-10-12 23:59:32,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:32,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:32,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:32,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-12 23:59:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-10-12 23:59:32,695 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-10-12 23:59:32,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-12 23:59:32,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-12 23:59:32,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-12 23:59:32,848 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-12 23:59:32,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:32 BoogieIcfgContainer [2021-10-12 23:59:32,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-12 23:59:32,851 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-12 23:59:32,851 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-12 23:59:32,854 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-12 23:59:32,855 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-12 23:59:32,856 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.10 11:59:32" (1/3) ... [2021-10-12 23:59:32,857 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c179c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 11:59:32, skipping insertion in model container [2021-10-12 23:59:32,857 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-12 23:59:32,857 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:59:32" (2/3) ... [2021-10-12 23:59:32,858 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c179c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 11:59:32, skipping insertion in model container [2021-10-12 23:59:32,858 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-12 23:59:32,858 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:32" (3/3) ... [2021-10-12 23:59:32,860 INFO L389 chiAutomizerObserver]: Analyzing ICFG NestedRecursion_2b.c [2021-10-12 23:59:32,924 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-12 23:59:32,924 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-12 23:59:32,925 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-12 23:59:32,925 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-12 23:59:32,925 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-12 23:59:32,925 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-12 23:59:32,925 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-12 23:59:32,939 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-12 23:59:32,954 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-12 23:59:33,007 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-12 23:59:33,008 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-12 23:59:33,008 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-12 23:59:33,015 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-12 23:59:33,015 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-12 23:59:33,015 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-12 23:59:33,015 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-12 23:59:33,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-12 23:59:33,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-12 23:59:33,019 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-12 23:59:33,019 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-12 23:59:33,019 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-12 23:59:33,026 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 12#L20true assume !(main_~x~0 < 0); 11#L21true call main_#t~ret3 := g(main_~x~0);< 7#gENTRYtrue [2021-10-12 23:59:33,026 INFO L793 eck$LassoCheckResult]: Loop: 7#gENTRYtrue ~x := #in~x; 8#L12true assume !(0 == ~x); 6#L15true call #t~ret0 := g(~x - 1);< 7#gENTRYtrue [2021-10-12 23:59:33,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:33,032 INFO L82 PathProgramCache]: Analyzing trace with hash 39891, now seen corresponding path program 1 times [2021-10-12 23:59:33,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:33,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231754843] [2021-10-12 23:59:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:33,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:33,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:33,139 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:33,174 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:33,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:33,189 INFO L82 PathProgramCache]: Analyzing trace with hash 29936, now seen corresponding path program 1 times [2021-10-12 23:59:33,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:33,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054176900] [2021-10-12 23:59:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:33,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:33,203 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:33,211 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:33,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:33,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1188392926, now seen corresponding path program 1 times [2021-10-12 23:59:33,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:33,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641318317] [2021-10-12 23:59:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:33,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:33,237 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:33,259 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:33,448 INFO L210 LassoAnalysis]: Preferences: [2021-10-12 23:59:33,449 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-12 23:59:33,449 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-12 23:59:33,449 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-12 23:59:33,449 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-12 23:59:33,449 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:33,449 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-12 23:59:33,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-12 23:59:33,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Loop [2021-10-12 23:59:33,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-12 23:59:33,450 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-12 23:59:33,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,539 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-12 23:59:33,540 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-12 23:59:33,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:33,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:33,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:33,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-12 23:59:33,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:33,548 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:33,572 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:33,572 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_~x=0} Honda state: {g_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:33,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-12 23:59:33,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:33,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:33,603 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:33,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-12 23:59:33,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:33,605 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:33,614 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:33,614 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:33,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:33,637 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:33,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:33,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:33,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-12 23:59:33,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:33,646 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:33,668 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:33,668 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:33,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:33,708 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:33,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:33,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:33,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-12 23:59:33,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:33,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:33,752 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:33,752 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:33,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:33,782 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:33,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:33,783 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:33,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-12 23:59:33,786 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:33,786 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:33,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:33,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:33,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:33,816 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:33,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-12 23:59:33,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-12 23:59:33,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:33,857 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:33,857 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-4} Honda state: {g_#in~x=-4} Generalized eigenvectors: [{g_#in~x=0}, {g_#in~x=0}, {g_#in~x=-1}] Lambdas: [0, 5, 1] Nus: [0, 0] [2021-10-12 23:59:33,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:33,946 INFO L210 LassoAnalysis]: Preferences: [2021-10-12 23:59:33,947 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-12 23:59:33,947 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-12 23:59:33,947 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-12 23:59:33,947 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-12 23:59:33,947 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:33,947 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-12 23:59:33,948 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-12 23:59:33,948 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2021-10-12 23:59:33,948 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-12 23:59:33,948 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-12 23:59:33,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:33,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:34,054 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-12 23:59:34,055 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-12 23:59:34,055 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,056 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,065 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:34,065 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:34,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-12 23:59:34,076 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:34,076 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:34,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,096 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,097 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-12 23:59:34,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:34,099 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:34,120 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:34,120 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:34,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,155 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-12 23:59:34,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:34,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:34,177 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:34,178 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:34,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-12 23:59:34,211 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:34,211 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:34,235 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:34,235 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:34,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,254 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,255 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-12 23:59:34,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:34,260 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:34,269 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:34,269 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_#t~ret4=0} Honda state: {ULTIMATE.start_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:34,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,289 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-12 23:59:34,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:34,291 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:34,304 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:34,304 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:34,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,325 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-12 23:59:34,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:34,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:34,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,358 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-12 23:59:34,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-12 23:59:34,359 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:34,401 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-12 23:59:34,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,404 INFO L210 LassoAnalysis]: Preferences: [2021-10-12 23:59:34,404 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-12 23:59:34,404 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-12 23:59:34,404 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-12 23:59:34,404 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-12 23:59:34,404 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,404 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-12 23:59:34,404 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-12 23:59:34,404 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration1_Lasso [2021-10-12 23:59:34,404 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-12 23:59:34,404 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-12 23:59:34,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:34,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:34,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:34,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:34,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:34,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:34,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:34,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:34,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:34,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:34,494 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-12 23:59:34,499 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-12 23:59:34,500 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,501 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-12 23:59:34,508 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 [2021-10-12 23:59:34,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-12 23:59:34,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-12 23:59:34,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-12 23:59:34,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-12 23:59:34,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-12 23:59:34,519 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-12 23:59:34,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-12 23:59:34,536 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-12 23:59:34,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,572 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,576 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,582 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 [2021-10-12 23:59:34,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-12 23:59:34,592 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-12 23:59:34,592 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-12 23:59:34,592 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-12 23:59:34,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-12 23:59:34,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-12 23:59:34,593 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-12 23:59:34,593 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-12 23:59:34,598 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-12 23:59:34,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-10-12 23:59:34,618 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,619 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,641 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 [2021-10-12 23:59:34,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-12 23:59:34,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-12 23:59:34,650 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-12 23:59:34,650 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-12 23:59:34,650 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-12 23:59:34,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-12 23:59:34,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-12 23:59:34,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-12 23:59:34,665 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-12 23:59:34,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,688 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,689 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-12 23:59:34,694 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 [2021-10-12 23:59:34,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-12 23:59:34,701 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-12 23:59:34,701 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-12 23:59:34,701 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-12 23:59:34,701 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-12 23:59:34,702 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-12 23:59:34,702 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-12 23:59:34,703 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-12 23:59:34,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,726 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-12 23:59:34,729 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 [2021-10-12 23:59:34,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-12 23:59:34,736 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-12 23:59:34,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-12 23:59:34,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-12 23:59:34,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-12 23:59:34,737 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-12 23:59:34,737 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-12 23:59:34,749 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-12 23:59:34,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,772 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-12 23:59:34,777 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 [2021-10-12 23:59:34,784 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-12 23:59:34,784 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-12 23:59:34,784 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-12 23:59:34,784 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-12 23:59:34,785 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-12 23:59:34,785 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-12 23:59:34,785 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-12 23:59:34,787 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-12 23:59:34,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:34,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,810 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-12 23:59:34,812 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 [2021-10-12 23:59:34,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-12 23:59:34,819 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-12 23:59:34,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-12 23:59:34,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-12 23:59:34,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-12 23:59:34,820 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-12 23:59:34,820 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-12 23:59:34,823 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-12 23:59:34,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-10-12 23:59:34,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,844 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-12 23:59:34,849 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 [2021-10-12 23:59:34,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-12 23:59:34,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-12 23:59:34,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-12 23:59:34,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-12 23:59:34,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-12 23:59:34,857 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-12 23:59:34,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-12 23:59:34,861 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-12 23:59:34,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-10-12 23:59:34,883 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,884 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,885 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 [2021-10-12 23:59:34,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-12 23:59:34,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-12 23:59:34,894 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-12 23:59:34,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-12 23:59:34,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-12 23:59:34,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-12 23:59:34,895 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-12 23:59:34,895 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-12 23:59:34,900 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-12 23:59:34,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-10-12 23:59:34,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:34,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:34,920 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:34,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-12 23:59:34,921 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 [2021-10-12 23:59:34,931 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-12 23:59:34,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-12 23:59:34,932 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-10-12 23:59:34,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-12 23:59:34,944 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2021-10-12 23:59:34,944 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2021-10-12 23:59:34,975 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-12 23:59:35,002 INFO L443 ModelExtractionUtils]: Simplification made 11 calls to the SMT solver. [2021-10-12 23:59:35,002 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 7 variables to zero. [2021-10-12 23:59:35,004 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:35,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:35,016 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:35,021 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-12 23:59:35,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-12 23:59:35,072 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2021-10-12 23:59:35,073 INFO L513 LassoAnalysis]: Proved termination. [2021-10-12 23:59:35,073 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#in~x) = 1*g_#in~x Supporting invariants [1*g_#in~x >= 0] [2021-10-12 23:59:35,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:35,113 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2021-10-12 23:59:35,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:35,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-12 23:59:35,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:35,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-12 23:59:35,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:35,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:35,358 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2021-10-12 23:59:35,359 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:35,497 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 35 states and 42 transitions. Complement of second has 13 states. [2021-10-12 23:59:35,497 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 [2021-10-12 23:59:35,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-12 23:59:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2021-10-12 23:59:35,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2021-10-12 23:59:35,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-12 23:59:35,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-12 23:59:35,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-12 23:59:35,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2021-10-12 23:59:35,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-12 23:59:35,503 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 42 transitions. [2021-10-12 23:59:35,506 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-12 23:59:35,512 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 25 transitions. [2021-10-12 23:59:35,513 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-12 23:59:35,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-12 23:59:35,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 25 transitions. [2021-10-12 23:59:35,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-12 23:59:35,515 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-10-12 23:59:35,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 25 transitions. [2021-10-12 23:59:35,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-10-12 23:59:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-10-12 23:59:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-10-12 23:59:35,565 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-10-12 23:59:35,565 INFO L587 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-10-12 23:59:35,565 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-12 23:59:35,565 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 21 transitions. [2021-10-12 23:59:35,566 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-12 23:59:35,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-12 23:59:35,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-12 23:59:35,568 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:35,568 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:35,568 INFO L791 eck$LassoCheckResult]: Stem: 114#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 115#L20 assume !(main_~x~0 < 0); 119#L21 call main_#t~ret3 := g(main_~x~0);< 125#gENTRY ~x := #in~x; 126#L12 assume !(0 == ~x); 118#L15 call #t~ret0 := g(~x - 1);< 123#gENTRY ~x := #in~x; 127#L12 assume 0 == ~x;#res := 1; 129#gFINAL assume true; 124#gEXIT >#22#return; 117#L15-1 [2021-10-12 23:59:35,568 INFO L793 eck$LassoCheckResult]: Loop: 117#L15-1 call #t~ret1 := g(1 + #t~ret0);< 122#gENTRY ~x := #in~x; 130#L12 assume !(0 == ~x); 120#L15 call #t~ret0 := g(~x - 1);< 122#gENTRY ~x := #in~x; 130#L12 assume 0 == ~x;#res := 1; 116#gFINAL assume true; 121#gEXIT >#22#return; 117#L15-1 [2021-10-12 23:59:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:35,569 INFO L82 PathProgramCache]: Analyzing trace with hash -54633169, now seen corresponding path program 1 times [2021-10-12 23:59:35,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:35,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342295717] [2021-10-12 23:59:35,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:35,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:35,592 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:35,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:35,601 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:35,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:35,602 INFO L82 PathProgramCache]: Analyzing trace with hash -243608724, now seen corresponding path program 1 times [2021-10-12 23:59:35,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:35,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264900662] [2021-10-12 23:59:35,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:35,603 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:35,609 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:35,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:35,620 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:35,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:35,620 INFO L82 PathProgramCache]: Analyzing trace with hash -791141734, now seen corresponding path program 1 times [2021-10-12 23:59:35,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:35,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291245398] [2021-10-12 23:59:35,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:35,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:35,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-12 23:59:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:35,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-10-12 23:59:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:35,741 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-12 23:59:35,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:35,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291245398] [2021-10-12 23:59:35,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291245398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:35,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699737309] [2021-10-12 23:59:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:35,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:35,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:35,748 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-12 23:59:35,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-12 23:59:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:35,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-12 23:59:35,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-12 23:59:35,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699737309] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:35,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:35,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-12 23:59:35,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771609461] [2021-10-12 23:59:36,074 INFO L210 LassoAnalysis]: Preferences: [2021-10-12 23:59:36,074 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-12 23:59:36,074 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-12 23:59:36,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-12 23:59:36,074 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-12 23:59:36,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:36,074 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-12 23:59:36,074 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-12 23:59:36,075 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2021-10-12 23:59:36,075 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-12 23:59:36,075 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-12 23:59:36,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:36,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:36,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:36,125 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-12 23:59:36,125 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-12 23:59:36,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:36,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:36,128 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:36,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-12 23:59:36,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:36,135 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:36,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:36,172 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:36,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:36,173 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:36,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-12 23:59:36,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-12 23:59:36,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:38,150 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-12 23:59:38,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:38,153 INFO L210 LassoAnalysis]: Preferences: [2021-10-12 23:59:38,153 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-12 23:59:38,153 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-12 23:59:38,154 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-12 23:59:38,154 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-12 23:59:38,154 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:38,154 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-12 23:59:38,154 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-12 23:59:38,154 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration2_Loop [2021-10-12 23:59:38,154 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-12 23:59:38,154 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-12 23:59:38,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:38,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:38,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:38,211 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-12 23:59:38,211 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-12 23:59:38,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:38,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:38,212 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:38,222 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 [2021-10-12 23:59:38,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-12 23:59:38,232 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-12 23:59:38,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-12 23:59:38,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-12 23:59:38,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-12 23:59:38,232 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-12 23:59:38,233 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-12 23:59:38,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-12 23:59:38,248 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-12 23:59:38,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:38,284 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:38,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:38,285 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:38,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-12 23:59:38,288 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 [2021-10-12 23:59:38,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-12 23:59:38,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-12 23:59:38,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-12 23:59:38,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-12 23:59:38,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-12 23:59:38,301 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-12 23:59:38,302 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-12 23:59:38,320 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-12 23:59:38,325 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-12 23:59:38,325 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-12 23:59:38,325 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:38,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:38,332 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:38,334 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-12 23:59:38,334 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-12 23:59:38,334 INFO L513 LassoAnalysis]: Proved termination. [2021-10-12 23:59:38,334 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(g_#t~ret0) = -2*g_#t~ret0 + 1 Supporting invariants [] [2021-10-12 23:59:38,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-12 23:59:38,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:38,366 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-12 23:59:38,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:38,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-12 23:59:38,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:38,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-12 23:59:38,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-12 23:59:38,715 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2021-10-12 23:59:38,716 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6 Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-12 23:59:38,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:39,015 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 21 transitions. cyclomatic complexity: 6. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 82 states and 120 transitions. Complement of second has 31 states. [2021-10-12 23:59:39,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-12 23:59:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-12 23:59:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 36 transitions. [2021-10-12 23:59:39,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 10 letters. Loop has 8 letters. [2021-10-12 23:59:39,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-12 23:59:39,019 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 18 letters. Loop has 8 letters. [2021-10-12 23:59:39,020 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-12 23:59:39,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 36 transitions. Stem has 10 letters. Loop has 16 letters. [2021-10-12 23:59:39,020 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-12 23:59:39,021 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 120 transitions. [2021-10-12 23:59:39,027 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-10-12 23:59:39,031 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 58 states and 81 transitions. [2021-10-12 23:59:39,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 44 [2021-10-12 23:59:39,032 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-12 23:59:39,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 81 transitions. [2021-10-12 23:59:39,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-12 23:59:39,033 INFO L681 BuchiCegarLoop]: Abstraction has 58 states and 81 transitions. [2021-10-12 23:59:39,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 81 transitions. [2021-10-12 23:59:39,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2021-10-12 23:59:39,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 15 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (18), 11 states have call predecessors, (18), 13 states have call successors, (18) [2021-10-12 23:59:39,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-10-12 23:59:39,053 INFO L704 BuchiCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-10-12 23:59:39,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-12 23:59:39,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-10-12 23:59:39,057 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-12 23:59:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:39,123 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-10-12 23:59:39,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-12 23:59:39,124 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 44 transitions. [2021-10-12 23:59:39,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-12 23:59:39,130 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 30 states and 34 transitions. [2021-10-12 23:59:39,131 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-10-12 23:59:39,131 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-12 23:59:39,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 34 transitions. [2021-10-12 23:59:39,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-12 23:59:39,131 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-10-12 23:59:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 34 transitions. [2021-10-12 23:59:39,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2021-10-12 23:59:39,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 7 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-12 23:59:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-10-12 23:59:39,140 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-12 23:59:39,140 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-12 23:59:39,140 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-12 23:59:39,140 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 27 transitions. [2021-10-12 23:59:39,144 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-12 23:59:39,144 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-12 23:59:39,144 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-12 23:59:39,146 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:39,146 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-12 23:59:39,147 INFO L791 eck$LassoCheckResult]: Stem: 495#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 496#L20 assume !(main_~x~0 < 0); 503#L21 call main_#t~ret3 := g(main_~x~0);< 509#gENTRY ~x := #in~x; 510#L12 assume !(0 == ~x); 498#L15 call #t~ret0 := g(~x - 1);< 504#gENTRY ~x := #in~x; 511#L12 assume 0 == ~x;#res := 1; 497#gFINAL assume true; 499#gEXIT >#22#return; 501#L15-1 call #t~ret1 := g(1 + #t~ret0);< 513#gENTRY ~x := #in~x; 512#L12 assume !(0 == ~x); 500#L15 call #t~ret0 := g(~x - 1);< 502#gENTRY ~x := #in~x; 519#L12 assume !(0 == ~x); 507#L15 [2021-10-12 23:59:39,147 INFO L793 eck$LassoCheckResult]: Loop: 507#L15 call #t~ret0 := g(~x - 1);< 514#gENTRY ~x := #in~x; 515#L12 assume !(0 == ~x); 507#L15 [2021-10-12 23:59:39,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:39,148 INFO L82 PathProgramCache]: Analyzing trace with hash 2001409165, now seen corresponding path program 2 times [2021-10-12 23:59:39,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:39,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808300588] [2021-10-12 23:59:39,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:39,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:39,188 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:39,197 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:39,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:39,202 INFO L82 PathProgramCache]: Analyzing trace with hash 49976, now seen corresponding path program 2 times [2021-10-12 23:59:39,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:39,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102479514] [2021-10-12 23:59:39,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:39,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:39,209 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:39,217 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:39,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:39,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1244451628, now seen corresponding path program 3 times [2021-10-12 23:59:39,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:39,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80414783] [2021-10-12 23:59:39,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:39,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:39,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-10-12 23:59:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-12 23:59:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-12 23:59:39,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-12 23:59:39,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80414783] [2021-10-12 23:59:39,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80414783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:39,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192540111] [2021-10-12 23:59:39,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-12 23:59:39,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-12 23:59:39,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:39,388 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-12 23:59:39,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-12 23:59:39,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-12 23:59:39,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-12 23:59:39,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-12 23:59:39,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-12 23:59:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-12 23:59:39,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192540111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-12 23:59:39,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-12 23:59:39,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-12 23:59:39,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481673161] [2021-10-12 23:59:39,605 INFO L210 LassoAnalysis]: Preferences: [2021-10-12 23:59:39,606 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-12 23:59:39,606 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-12 23:59:39,606 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-12 23:59:39,606 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-12 23:59:39,606 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:39,606 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-12 23:59:39,606 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-12 23:59:39,607 INFO L133 ssoRankerPreferences]: Filename of dumped script: NestedRecursion_2b.c_Iteration3_Loop [2021-10-12 23:59:39,607 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-12 23:59:39,607 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-12 23:59:39,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:39,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:39,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:39,618 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-12 23:59:39,659 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-12 23:59:39,659 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-12 23:59:39,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:39,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:39,660 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:39,662 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:39,662 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:39,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-12 23:59:39,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-10-12 23:59:39,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:39,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:39,713 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:39,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-12 23:59:39,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-12 23:59:39,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:40,507 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:40,507 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#in~x=-5, g_~x=-7} Honda state: {g_#in~x=-5, g_~x=-7} Generalized eigenvectors: [{g_#in~x=-4, g_~x=-1}, {g_#in~x=3, g_~x=0}, {g_#in~x=-2, g_~x=0}] Lambdas: [1, 0, 0] Nus: [1, 0] [2021-10-12 23:59:40,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:40,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:40,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:40,528 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:40,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:40,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:40,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-12 23:59:40,538 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:40,538 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret1=0} Honda state: {g_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:40,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:40,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:40,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:40,562 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:40,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-12 23:59:40,565 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:40,565 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:40,573 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:40,573 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#res=0} Honda state: {g_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:40,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-10-12 23:59:40,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-12 23:59:40,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-12 23:59:40,593 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-12 23:59:40,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-12 23:59:40,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-12 23:59:40,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-12 23:59:40,602 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-12 23:59:40,602 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {g_#t~ret0=0} Honda state: {g_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-12 23:59:40,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:40,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-12 23:59:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-12 23:59:40,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-12 23:59:40,625 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. cyclomatic complexity: 4 Second operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-12 23:59:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-12 23:59:40,773 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-10-12 23:59:40,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-12 23:59:40,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 28 transitions. [2021-10-12 23:59:40,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-12 23:59:40,786 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 27 states and 28 transitions. [2021-10-12 23:59:40,786 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-10-12 23:59:40,786 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-12 23:59:40,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 28 transitions. [2021-10-12 23:59:40,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-12 23:59:40,786 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-12 23:59:40,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 28 transitions. [2021-10-12 23:59:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-10-12 23:59:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-12 23:59:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-12 23:59:40,789 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-12 23:59:40,789 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-12 23:59:40,789 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-12 23:59:40,789 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 22 transitions. [2021-10-12 23:59:40,789 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-12 23:59:40,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-12 23:59:40,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-12 23:59:40,790 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-12 23:59:40,790 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 1, 1, 1, 1] [2021-10-12 23:59:40,790 INFO L791 eck$LassoCheckResult]: Stem: 632#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 633#L20 assume !(main_~x~0 < 0); 640#L21 call main_#t~ret3 := g(main_~x~0);< 644#gENTRY ~x := #in~x; 647#L12 assume !(0 == ~x); 635#L15 call #t~ret0 := g(~x - 1);< 641#gENTRY ~x := #in~x; 648#L12 assume 0 == ~x;#res := 1; 634#gFINAL assume true; 636#gEXIT >#22#return; 638#L15-1 [2021-10-12 23:59:40,791 INFO L793 eck$LassoCheckResult]: Loop: 638#L15-1 call #t~ret1 := g(1 + #t~ret0);< 645#gENTRY ~x := #in~x; 646#L12 assume !(0 == ~x); 637#L15 call #t~ret0 := g(~x - 1);< 639#gENTRY ~x := #in~x; 652#L12 assume !(0 == ~x); 643#L15 call #t~ret0 := g(~x - 1);< 651#gENTRY ~x := #in~x; 649#L12 assume 0 == ~x;#res := 1; 650#gFINAL assume true; 642#gEXIT >#22#return; 638#L15-1 [2021-10-12 23:59:40,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:40,791 INFO L82 PathProgramCache]: Analyzing trace with hash -54633169, now seen corresponding path program 2 times [2021-10-12 23:59:40,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:40,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822719318] [2021-10-12 23:59:40,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:40,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:40,804 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:40,820 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:40,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:40,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1187216231, now seen corresponding path program 2 times [2021-10-12 23:59:40,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:40,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481216840] [2021-10-12 23:59:40,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:40,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:40,841 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:40,847 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:40,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-12 23:59:40,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1917105529, now seen corresponding path program 4 times [2021-10-12 23:59:40,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-12 23:59:40,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700450779] [2021-10-12 23:59:40,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-12 23:59:40,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-12 23:59:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:40,858 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-12 23:59:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-12 23:59:40,866 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-12 23:59:41,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 11:59:41 BoogieIcfgContainer [2021-10-12 23:59:41,172 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-12 23:59:41,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-12 23:59:41,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-12 23:59:41,173 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-12 23:59:41,173 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:59:32" (3/4) ... [2021-10-12 23:59:41,176 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-12 23:59:41,215 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-12 23:59:41,216 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-12 23:59:41,217 INFO L168 Benchmark]: Toolchain (without parser) took 8940.30 ms. Allocated memory was 79.7 MB in the beginning and 121.6 MB in the end (delta: 41.9 MB). Free memory was 43.5 MB in the beginning and 71.5 MB in the end (delta: -28.0 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:41,218 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 60.1 MB in the beginning and 60.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:41,219 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.36 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 43.3 MB in the beginning and 76.0 MB in the end (delta: -32.7 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:41,220 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.30 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 74.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:41,220 INFO L168 Benchmark]: Boogie Preprocessor took 14.86 ms. Allocated memory is still 98.6 MB. Free memory was 74.9 MB in the beginning and 73.9 MB in the end (delta: 941.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:41,220 INFO L168 Benchmark]: RCFGBuilder took 241.85 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 66.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:41,221 INFO L168 Benchmark]: BuchiAutomizer took 8321.11 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 65.8 MB in the beginning and 73.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-12 23:59:41,221 INFO L168 Benchmark]: Witness Printer took 43.47 ms. Allocated memory is still 121.6 MB. Free memory was 73.5 MB in the beginning and 71.5 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-12 23:59:41,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 79.7 MB. Free memory was 60.1 MB in the beginning and 60.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.36 ms. Allocated memory was 79.7 MB in the beginning and 98.6 MB in the end (delta: 18.9 MB). Free memory was 43.3 MB in the beginning and 76.0 MB in the end (delta: -32.7 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.30 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 74.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.86 ms. Allocated memory is still 98.6 MB. Free memory was 74.9 MB in the beginning and 73.9 MB in the end (delta: 941.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 241.85 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 66.1 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 8321.11 ms. Allocated memory was 98.6 MB in the beginning and 121.6 MB in the end (delta: 23.1 MB). Free memory was 65.8 MB in the beginning and 73.5 MB in the end (delta: -7.7 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * Witness Printer took 43.47 ms. Allocated memory is still 121.6 MB. Free memory was 73.5 MB in the beginning and 71.5 MB in the end (delta: 2.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function \old(x) and consists of 5 locations. One deterministic module has affine ranking function -2 * aux-g(x - 1)-aux + 1 and consists of 10 locations. 2 modules have a trivial ranking function, the largest among these consists of 10 locations. The remainder module has 21 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.2s and 4 iterations. TraceHistogramMax:4. Analysis of lassos took 6.7s. Construction of modules took 0.1s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 67.4ms AutomataMinimizationTime, 4 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 46 SDtfs, 60 SDslu, 98 SDs, 0 SdLazy, 228 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 196.7ms Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT1 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq194 hnf92 smp100 dnf139 smp100 tf104 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 153ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.3s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@62380dec=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@547254fc=1, \result=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3a004a8e=0, \old(x)=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7bad306e=0, x=0, x=1, NULL=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L19] int x = __VERIFIER_nondet_int(); [L20] COND FALSE !(x < 0) [L21] CALL g(x) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) Loop: [L15] CALL g(g(x - 1) + 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND FALSE !(x == 0) [L15] CALL g(x - 1) [L12] COND TRUE x == 0 [L13] return 1; [L15] RET g(x - 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-12 23:59:41,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-12 23:59:41,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-10-12 23:59:41,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1942fc7a-6aea-47aa-a54b-ee35c0e18bec/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...