./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa --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 fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:06:27,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:06:27,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:06:27,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:06:27,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:06:27,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:06:27,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:06:27,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:06:27,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:06:27,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:06:27,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:06:27,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:06:27,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:06:27,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:06:27,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:06:27,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:06:27,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:06:27,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:06:27,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:06:27,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:06:27,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:06:27,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:06:27,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:06:27,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:06:27,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:06:27,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:06:27,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:06:27,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:06:27,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:06:27,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:06:27,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:06:27,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:06:27,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:06:27,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:06:27,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:06:27,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:06:27,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:06:27,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:06:27,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:06:27,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:06:27,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:06:27,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-07 01:06:27,432 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:06:27,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:06:27,432 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:06:27,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:06:27,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:06:27,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:06:27,434 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:06:27,434 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-07 01:06:27,434 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-07 01:06:27,434 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-07 01:06:27,434 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-07 01:06:27,434 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-07 01:06:27,434 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-07 01:06:27,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:06:27,435 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 01:06:27,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:06:27,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:06:27,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-07 01:06:27,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-07 01:06:27,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-07 01:06:27,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:06:27,435 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-07 01:06:27,436 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:06:27,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-07 01:06:27,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:06:27,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:06:27,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:06:27,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:06:27,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:06:27,437 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-07 01:06:27,437 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_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb8f212b8045dc9be8518316cbae752ce6111a4a93244dc89f86b0ea27a978ef [2021-12-07 01:06:27,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:06:27,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:06:27,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:06:27,645 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:06:27,646 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:06:27,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2021-12-07 01:06:27,688 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/data/9e690efa2/ef77f8f2cf3d4227a176000b6fcfd802/FLAG907029559 [2021-12-07 01:06:28,051 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:06:28,051 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/sv-benchmarks/c/termination-crafted/Collatz_bounded.c [2021-12-07 01:06:28,055 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/data/9e690efa2/ef77f8f2cf3d4227a176000b6fcfd802/FLAG907029559 [2021-12-07 01:06:28,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/data/9e690efa2/ef77f8f2cf3d4227a176000b6fcfd802 [2021-12-07 01:06:28,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:06:28,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:06:28,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:06:28,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:06:28,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:06:28,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:06:28" (1/1) ... [2021-12-07 01:06:28,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea562d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28, skipping insertion in model container [2021-12-07 01:06:28,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:06:28" (1/1) ... [2021-12-07 01:06:28,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:06:28,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:06:28,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:06:28,194 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:06:28,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:06:28,212 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:06:28,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28 WrapperNode [2021-12-07 01:06:28,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:06:28,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:06:28,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:06:28,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:06:28,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28" (1/1) ... [2021-12-07 01:06:28,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28" (1/1) ... [2021-12-07 01:06:28,233 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2021-12-07 01:06:28,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:06:28,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:06:28,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:06:28,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:06:28,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28" (1/1) ... [2021-12-07 01:06:28,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28" (1/1) ... [2021-12-07 01:06:28,241 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28" (1/1) ... [2021-12-07 01:06:28,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28" (1/1) ... [2021-12-07 01:06:28,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28" (1/1) ... [2021-12-07 01:06:28,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28" (1/1) ... [2021-12-07 01:06:28,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28" (1/1) ... [2021-12-07 01:06:28,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:06:28,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:06:28,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:06:28,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:06:28,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28" (1/1) ... [2021-12-07 01:06:28,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:28,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:28,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:28,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-07 01:06:28,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:06:28,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:06:28,353 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:06:28,355 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:06:28,417 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:06:28,423 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:06:28,424 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 01:06:28,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:06:28 BoogieIcfgContainer [2021-12-07 01:06:28,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:06:28,427 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-07 01:06:28,427 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-07 01:06:28,430 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-07 01:06:28,431 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 01:06:28,431 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 01:06:28" (1/3) ... [2021-12-07 01:06:28,432 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a1e6bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 01:06:28, skipping insertion in model container [2021-12-07 01:06:28,432 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 01:06:28,432 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:06:28" (2/3) ... [2021-12-07 01:06:28,433 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a1e6bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 01:06:28, skipping insertion in model container [2021-12-07 01:06:28,433 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-07 01:06:28,433 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:06:28" (3/3) ... [2021-12-07 01:06:28,434 INFO L388 chiAutomizerObserver]: Analyzing ICFG Collatz_bounded.c [2021-12-07 01:06:28,470 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-07 01:06:28,471 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-07 01:06:28,471 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-07 01:06:28,471 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-07 01:06:28,471 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-07 01:06:28,471 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-07 01:06:28,471 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-07 01:06:28,471 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-07 01:06:28,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:28,494 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:06:28,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:06:28,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:06:28,499 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-07 01:06:28,499 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-07 01:06:28,499 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-07 01:06:28,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:28,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:06:28,501 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:06:28,501 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:06:28,501 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-07 01:06:28,501 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-07 01:06:28,506 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 9#L14true assume !(main_~y~0#1 >= 113383); 7#L16-2true [2021-12-07 01:06:28,506 INFO L793 eck$LassoCheckResult]: Loop: 7#L16-2true assume !!(main_~y~0#1 > 1); 3#L16true assume 0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2);main_~y~0#1 := (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then 1 + main_~y~0#1 / 2 else main_~y~0#1 / 2); 7#L16-2true [2021-12-07 01:06:28,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:28,512 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2021-12-07 01:06:28,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:28,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671615054] [2021-12-07 01:06:28,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:28,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:28,577 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:06:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:28,592 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:06:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 1 times [2021-12-07 01:06:28,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:28,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277390676] [2021-12-07 01:06:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:28,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:28,615 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:06:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:28,626 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:06:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:28,627 INFO L85 PathProgramCache]: Analyzing trace with hash 28695975, now seen corresponding path program 1 times [2021-12-07 01:06:28,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:28,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730830772] [2021-12-07 01:06:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:28,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:28,639 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:06:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:28,650 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:06:28,712 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 01:06:28,713 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 01:06:28,713 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 01:06:28,713 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 01:06:28,713 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 01:06:28,713 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:28,713 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 01:06:28,713 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 01:06:28,713 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration1_Loop [2021-12-07 01:06:28,713 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 01:06:28,714 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 01:06:28,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:06:28,792 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 01:06:28,792 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 01:06:28,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:28,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:28,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:28,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-07 01:06:28,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 01:06:28,797 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 01:06:28,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:06:28,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:28,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:28,849 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:28,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-07 01:06:28,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 01:06:28,850 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 01:06:28,907 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 01:06:28,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-07 01:06:28,910 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 01:06:28,910 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 01:06:28,910 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 01:06:28,910 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 01:06:28,910 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 01:06:28,910 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:28,910 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 01:06:28,910 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 01:06:28,910 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration1_Loop [2021-12-07 01:06:28,910 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 01:06:28,910 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 01:06:28,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:06:28,957 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 01:06:28,961 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 01:06:28,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:28,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:28,964 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:28,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-07 01:06:28,965 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 [2021-12-07 01:06:28,973 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:06:28,973 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:06:28,974 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:06:28,974 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:06:28,974 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:06:28,978 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:06:28,978 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:06:28,981 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 01:06:28,987 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 01:06:28,987 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-07 01:06:28,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:28,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:28,990 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:28,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-07 01:06:29,021 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 01:06:29,021 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 01:06:29,022 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 01:06:29,022 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-07 01:06:29,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-07 01:06:29,042 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 01:06:29,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-07 01:06:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:06:29,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:06:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,089 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:06:29,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:06:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:06:29,142 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-07 01:06:29,143 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,179 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 35 transitions. Complement of second has 8 states. [2021-12-07 01:06:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-07 01:06:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2021-12-07 01:06:29,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 3 letters. Loop has 2 letters. [2021-12-07 01:06:29,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:06:29,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-07 01:06:29,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:06:29,187 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-07 01:06:29,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:06:29,188 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2021-12-07 01:06:29,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:06:29,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 9 states and 12 transitions. [2021-12-07 01:06:29,193 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-07 01:06:29,193 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-07 01:06:29,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2021-12-07 01:06:29,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 01:06:29,194 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-12-07 01:06:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2021-12-07 01:06:29,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-07 01:06:29,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 12 transitions. [2021-12-07 01:06:29,212 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-12-07 01:06:29,212 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-12-07 01:06:29,212 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-07 01:06:29,212 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 12 transitions. [2021-12-07 01:06:29,212 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:06:29,212 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:06:29,212 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:06:29,213 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-07 01:06:29,213 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-07 01:06:29,213 INFO L791 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 85#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 87#L14 assume !(main_~y~0#1 >= 113383); 88#L16-2 assume !!(main_~y~0#1 > 1); 80#L16 assume !(0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2));main_~y~0#1 := 1 + 3 * main_~y~0#1; 81#L16-2 [2021-12-07 01:06:29,213 INFO L793 eck$LassoCheckResult]: Loop: 81#L16-2 assume !!(main_~y~0#1 > 1); 86#L16 assume 0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2);main_~y~0#1 := (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then 1 + main_~y~0#1 / 2 else main_~y~0#1 / 2); 81#L16-2 [2021-12-07 01:06:29,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,214 INFO L85 PathProgramCache]: Analyzing trace with hash 28695977, now seen corresponding path program 1 times [2021-12-07 01:06:29,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:29,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676242794] [2021-12-07 01:06:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:29,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,222 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:06:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,228 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:06:29,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 2 times [2021-12-07 01:06:29,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:29,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800223023] [2021-12-07 01:06:29,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:29,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,235 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:06:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,240 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:06:29,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1807030636, now seen corresponding path program 1 times [2021-12-07 01:06:29,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:29,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265682887] [2021-12-07 01:06:29,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:29,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,249 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:06:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,259 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:06:29,281 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 01:06:29,281 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 01:06:29,281 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 01:06:29,281 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 01:06:29,281 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 01:06:29,281 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:29,282 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 01:06:29,282 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 01:06:29,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration2_Loop [2021-12-07 01:06:29,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 01:06:29,282 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 01:06:29,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:06:29,316 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 01:06:29,316 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 01:06:29,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:29,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:29,317 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:29,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-07 01:06:29,319 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 01:06:29,319 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 01:06:29,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-07 01:06:29,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:29,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:29,352 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:29,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-07 01:06:29,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 01:06:29,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 01:06:29,394 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 01:06:29,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-07 01:06:29,397 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 01:06:29,397 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 01:06:29,397 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 01:06:29,397 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 01:06:29,397 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 01:06:29,397 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:29,397 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 01:06:29,397 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 01:06:29,397 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration2_Loop [2021-12-07 01:06:29,398 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 01:06:29,398 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 01:06:29,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:06:29,433 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 01:06:29,433 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 01:06:29,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:29,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:29,434 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:29,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-07 01:06:29,437 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 [2021-12-07 01:06:29,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:06:29,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:06:29,445 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:06:29,445 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:06:29,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:06:29,447 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:06:29,447 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:06:29,450 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 01:06:29,453 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-07 01:06:29,453 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-07 01:06:29,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:29,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:29,454 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:29,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-07 01:06:29,455 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 01:06:29,455 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 01:06:29,455 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 01:06:29,455 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-07 01:06:29,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-07 01:06:29,475 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 01:06:29,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:06:29,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:06:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,495 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:06:29,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:06:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:06:29,506 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-07 01:06:29,506 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,517 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 12 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 18 transitions. Complement of second has 5 states. [2021-12-07 01:06:29,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-07 01:06:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-07 01:06:29,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 2 letters. [2021-12-07 01:06:29,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:06:29,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2021-12-07 01:06:29,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:06:29,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 5 letters. Loop has 4 letters. [2021-12-07 01:06:29,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:06:29,520 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2021-12-07 01:06:29,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:06:29,521 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 18 transitions. [2021-12-07 01:06:29,521 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-07 01:06:29,522 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-12-07 01:06:29,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2021-12-07 01:06:29,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 01:06:29,522 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-12-07 01:06:29,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2021-12-07 01:06:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-07 01:06:29,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2021-12-07 01:06:29,524 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-12-07 01:06:29,524 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2021-12-07 01:06:29,524 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-07 01:06:29,524 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 18 transitions. [2021-12-07 01:06:29,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-07 01:06:29,525 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:06:29,525 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:06:29,525 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2021-12-07 01:06:29,525 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-07 01:06:29,526 INFO L791 eck$LassoCheckResult]: Stem: 148#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 149#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 152#L14 assume !(main_~y~0#1 >= 113383); 153#L16-2 assume !!(main_~y~0#1 > 1); 144#L16 assume !(0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2));main_~y~0#1 := 1 + 3 * main_~y~0#1; 145#L16-2 assume !!(main_~y~0#1 > 1); 154#L16 assume !(0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2));main_~y~0#1 := 1 + 3 * main_~y~0#1; 150#L16-2 [2021-12-07 01:06:29,526 INFO L793 eck$LassoCheckResult]: Loop: 150#L16-2 assume !!(main_~y~0#1 > 1); 151#L16 assume 0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2);main_~y~0#1 := (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then 1 + main_~y~0#1 / 2 else main_~y~0#1 / 2); 150#L16-2 [2021-12-07 01:06:29,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1807030638, now seen corresponding path program 2 times [2021-12-07 01:06:29,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:29,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208346618] [2021-12-07 01:06:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:29,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:06:29,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:06:29,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208346618] [2021-12-07 01:06:29,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208346618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:06:29,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:06:29,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:06:29,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814138792] [2021-12-07 01:06:29,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:06:29,605 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-07 01:06:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 3 times [2021-12-07 01:06:29,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:29,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249429584] [2021-12-07 01:06:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:29,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,610 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:06:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,614 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:06:29,634 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 01:06:29,634 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 01:06:29,634 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 01:06:29,634 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 01:06:29,634 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 01:06:29,634 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:29,635 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 01:06:29,635 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 01:06:29,635 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration3_Loop [2021-12-07 01:06:29,635 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 01:06:29,635 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 01:06:29,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:06:29,668 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 01:06:29,668 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 01:06:29,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:29,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:29,669 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:29,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-07 01:06:29,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 01:06:29,670 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 01:06:29,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-07 01:06:29,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:29,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:29,704 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:29,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-07 01:06:29,705 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 01:06:29,705 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 01:06:29,743 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 01:06:29,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-07 01:06:29,745 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 01:06:29,745 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 01:06:29,746 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 01:06:29,746 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 01:06:29,746 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 01:06:29,746 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:29,746 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 01:06:29,746 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 01:06:29,746 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration3_Loop [2021-12-07 01:06:29,746 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 01:06:29,746 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 01:06:29,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:06:29,776 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 01:06:29,777 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 01:06:29,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:29,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:29,778 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:29,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-07 01:06:29,779 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 [2021-12-07 01:06:29,787 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:06:29,788 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:06:29,788 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:06:29,788 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:06:29,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:06:29,789 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:06:29,789 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:06:29,792 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-07 01:06:29,795 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-07 01:06:29,795 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-07 01:06:29,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:29,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:29,796 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:29,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-07 01:06:29,801 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-07 01:06:29,801 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-07 01:06:29,801 INFO L513 LassoAnalysis]: Proved termination. [2021-12-07 01:06:29,801 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-07 01:06:29,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-07 01:06:29,821 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-07 01:06:29,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:06:29,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:06:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,844 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:06:29,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:06:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:06:29,854 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-07 01:06:29,854 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,862 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15 states and 22 transitions. Complement of second has 5 states. [2021-12-07 01:06:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-07 01:06:29,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-07 01:06:29,863 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2021-12-07 01:06:29,863 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:06:29,863 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 01:06:29,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:06:29,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:06:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,884 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:06:29,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:06:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:06:29,894 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-07 01:06:29,894 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,902 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 15 states and 22 transitions. Complement of second has 5 states. [2021-12-07 01:06:29,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-07 01:06:29,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-07 01:06:29,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 7 letters. Loop has 2 letters. [2021-12-07 01:06:29,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:06:29,904 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-07 01:06:29,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 01:06:29,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:06:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:06:29,925 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 01:06:29,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:06:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:06:29,933 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-07 01:06:29,933 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,940 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 18 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 17 states and 25 transitions. Complement of second has 4 states. [2021-12-07 01:06:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-07 01:06:29,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-12-07 01:06:29,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2021-12-07 01:06:29,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:06:29,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2021-12-07 01:06:29,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:06:29,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-07 01:06:29,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-07 01:06:29,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 25 transitions. [2021-12-07 01:06:29,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-07 01:06:29,943 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 15 states and 21 transitions. [2021-12-07 01:06:29,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-07 01:06:29,944 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-12-07 01:06:29,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 21 transitions. [2021-12-07 01:06:29,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 01:06:29,944 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2021-12-07 01:06:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 21 transitions. [2021-12-07 01:06:29,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 7. [2021-12-07 01:06:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-12-07 01:06:29,945 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-12-07 01:06:29,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:06:29,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:06:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:06:29,948 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:06:29,960 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2021-12-07 01:06:29,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:06:29,961 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2021-12-07 01:06:29,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-07 01:06:29,962 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 11 transitions. [2021-12-07 01:06:29,962 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-07 01:06:29,962 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-12-07 01:06:29,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 11 transitions. [2021-12-07 01:06:29,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-07 01:06:29,962 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-12-07 01:06:29,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 11 transitions. [2021-12-07 01:06:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-12-07 01:06:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:06:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2021-12-07 01:06:29,963 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-12-07 01:06:29,963 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-12-07 01:06:29,963 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-07 01:06:29,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2021-12-07 01:06:29,963 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-07 01:06:29,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-07 01:06:29,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-07 01:06:29,963 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-07 01:06:29,963 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-12-07 01:06:29,964 INFO L791 eck$LassoCheckResult]: Stem: 338#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 339#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~y~0#1;main_~y~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 340#L14 assume !(main_~y~0#1 >= 113383); 341#L16-2 assume !!(main_~y~0#1 > 1); 334#L16 [2021-12-07 01:06:29,964 INFO L793 eck$LassoCheckResult]: Loop: 334#L16 assume !(0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2));main_~y~0#1 := 1 + 3 * main_~y~0#1; 335#L16-2 assume !!(main_~y~0#1 > 1); 336#L16 assume 0 == (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then main_~y~0#1 % 2 - 2 else main_~y~0#1 % 2);main_~y~0#1 := (if main_~y~0#1 < 0 && 0 != main_~y~0#1 % 2 then 1 + main_~y~0#1 / 2 else main_~y~0#1 / 2); 337#L16-2 assume !!(main_~y~0#1 > 1); 334#L16 [2021-12-07 01:06:29,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,964 INFO L85 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2021-12-07 01:06:29,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:29,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836309345] [2021-12-07 01:06:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:29,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,966 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:06:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,968 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:06:29,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1565113, now seen corresponding path program 1 times [2021-12-07 01:06:29,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:29,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876137695] [2021-12-07 01:06:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:29,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,975 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:06:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,980 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:06:29,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:06:29,981 INFO L85 PathProgramCache]: Analyzing trace with hash 183374884, now seen corresponding path program 2 times [2021-12-07 01:06:29,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:06:29,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048989508] [2021-12-07 01:06:29,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:06:29,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:06:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,987 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:06:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:06:29,999 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:06:30,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-07 01:06:30,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-07 01:06:30,059 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 01:06:30,060 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 01:06:30,060 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 01:06:30,060 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 01:06:30,060 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 01:06:30,060 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,060 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 01:06:30,060 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 01:06:30,060 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration4_Loop [2021-12-07 01:06:30,060 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 01:06:30,060 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 01:06:30,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:06:30,099 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 01:06:30,099 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 01:06:30,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,100 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-07 01:06:30,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 01:06:30,101 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 01:06:30,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-07 01:06:30,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,142 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-07 01:06:30,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 01:06:30,143 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 01:06:30,241 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-07 01:06:30,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-07 01:06:30,244 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 01:06:30,244 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 01:06:30,244 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 01:06:30,244 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 01:06:30,244 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-07 01:06:30,244 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,244 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 01:06:30,244 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 01:06:30,244 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration4_Loop [2021-12-07 01:06:30,244 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 01:06:30,244 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 01:06:30,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:06:30,286 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 01:06:30,287 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-07 01:06:30,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,287 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-07 01:06:30,290 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 [2021-12-07 01:06:30,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:06:30,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:06:30,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:06:30,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:06:30,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-07 01:06:30,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-07 01:06:30,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:06:30,301 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:06:30,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-07 01:06:30,319 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-12-07 01:06:30,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,320 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-07 01:06:30,321 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 [2021-12-07 01:06:30,328 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:06:30,328 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:06:30,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:06:30,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:06:30,329 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-12-07 01:06:30,330 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-12-07 01:06:30,331 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:06:30,333 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:06:30,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-12-07 01:06:30,352 INFO L490 LassoAnalysis]: Using template '3-nested'. [2021-12-07 01:06:30,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,353 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-07 01:06:30,354 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 [2021-12-07 01:06:30,361 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:06:30,361 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:06:30,361 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:06:30,361 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:06:30,361 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-12-07 01:06:30,364 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-07 01:06:30,364 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:06:30,368 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:06:30,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-07 01:06:30,386 INFO L490 LassoAnalysis]: Using template '4-nested'. [2021-12-07 01:06:30,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,387 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-07 01:06:30,389 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 [2021-12-07 01:06:30,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-07 01:06:30,396 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:06:30,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:06:30,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:06:30,397 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-12-07 01:06:30,399 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-12-07 01:06:30,399 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:06:30,403 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:06:30,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-07 01:06:30,421 INFO L490 LassoAnalysis]: Using template '2-phase'. [2021-12-07 01:06:30,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,422 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-07 01:06:30,423 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:06:30,431 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-12-07 01:06:30,431 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-12-07 01:06:30,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:06:30,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:06:30,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:06:30,431 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-12-07 01:06:30,433 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-12-07 01:06:30,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:06:30,439 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:06:30,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-07 01:06:30,457 INFO L490 LassoAnalysis]: Using template '3-phase'. [2021-12-07 01:06:30,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,458 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-07 01:06:30,459 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 [2021-12-07 01:06:30,467 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-12-07 01:06:30,467 INFO L338 nArgumentSynthesizer]: Template has degree 2. [2021-12-07 01:06:30,467 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:06:30,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:06:30,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:06:30,467 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-12-07 01:06:30,470 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-07 01:06:30,470 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:06:30,479 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:06:30,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-07 01:06:30,497 INFO L490 LassoAnalysis]: Using template '4-phase'. [2021-12-07 01:06:30,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,498 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-07 01:06:30,499 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-07 01:06:30,506 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-12-07 01:06:30,506 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-12-07 01:06:30,507 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:06:30,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:06:30,507 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:06:30,507 INFO L205 nArgumentSynthesizer]: 5 template conjuncts. [2021-12-07 01:06:30,511 INFO L401 nArgumentSynthesizer]: We have 5 Motzkin's Theorem applications. [2021-12-07 01:06:30,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:06:30,531 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:06:30,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-07 01:06:30,550 INFO L490 LassoAnalysis]: Using template '2-lex'. [2021-12-07 01:06:30,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,550 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-07 01:06:30,552 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 [2021-12-07 01:06:30,560 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-12-07 01:06:30,560 INFO L338 nArgumentSynthesizer]: Template has degree 1. [2021-12-07 01:06:30,560 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:06:30,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:06:30,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:06:30,561 INFO L205 nArgumentSynthesizer]: 4 template conjuncts. [2021-12-07 01:06:30,563 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-07 01:06:30,563 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:06:30,568 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:06:30,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-07 01:06:30,596 INFO L490 LassoAnalysis]: Using template '3-lex'. [2021-12-07 01:06:30,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,597 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-07 01:06:30,598 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 [2021-12-07 01:06:30,605 WARN L333 nArgumentSynthesizer]: Using a linear SMT query and a templates of degree > 0, hence this method is incomplete. [2021-12-07 01:06:30,606 INFO L338 nArgumentSynthesizer]: Template has degree 3. [2021-12-07 01:06:30,606 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-07 01:06:30,606 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-07 01:06:30,606 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-07 01:06:30,606 INFO L205 nArgumentSynthesizer]: 6 template conjuncts. [2021-12-07 01:06:30,609 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-07 01:06:30,609 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-07 01:06:30,616 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-07 01:06:30,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-12-07 01:06:30,640 INFO L210 LassoAnalysis]: Preferences: [2021-12-07 01:06:30,640 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-07 01:06:30,640 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-07 01:06:30,641 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-07 01:06:30,641 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-07 01:06:30,641 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,641 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-07 01:06:30,641 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-07 01:06:30,641 INFO L133 ssoRankerPreferences]: Filename of dumped script: Collatz_bounded.c_Iteration4_Lasso [2021-12-07 01:06:30,641 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-07 01:06:30,641 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-07 01:06:30,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:06:30,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:06:30,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-07 01:06:30,680 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-07 01:06:30,680 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-07 01:06:30,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,681 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-07 01:06:30,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 01:06:30,683 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 01:06:30,691 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-07 01:06:30,691 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-07 01:06:30,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-07 01:06:30,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,710 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-07 01:06:30,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-07 01:06:30,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-07 01:06:30,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-12-07 01:06:30,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-07 01:06:30,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:06:30,751 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-07 01:06:30,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_252bfc76-9888-42ae-8d22-f1589a2d118c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-07 01:06:30,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-07 01:06:30,752 INFO L160 nArgumentSynthesizer]: Using integer mode.