./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.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_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/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_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/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_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/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 faa806fd1be90697a522dfc0988145f6572d5d87fac98caf7aa5fe5b66e6095c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:03:04,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:03:04,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:03:04,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:03:04,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:03:04,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:03:04,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:03:04,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:03:04,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:03:04,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:03:04,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:03:04,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:03:04,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:03:04,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:03:04,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:03:04,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:03:04,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:03:04,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:03:04,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:03:04,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:03:04,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:03:04,426 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:03:04,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:03:04,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:03:04,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:03:04,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:03:04,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:03:04,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:03:04,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:03:04,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:03:04,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:03:04,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:03:04,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:03:04,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:03:04,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:03:04,436 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:03:04,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:03:04,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:03:04,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:03:04,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:03:04,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:03:04,439 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-06 22:03:04,457 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:03:04,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:03:04,458 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:03:04,458 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:03:04,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:03:04,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:03:04,459 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:03:04,459 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 22:03:04,459 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 22:03:04,459 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 22:03:04,459 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 22:03:04,459 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 22:03:04,459 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 22:03:04,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:03:04,460 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:03:04,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:03:04,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:03:04,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 22:03:04,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 22:03:04,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 22:03:04,460 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:03:04,460 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 22:03:04,460 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:03:04,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 22:03:04,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:03:04,461 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:03:04,461 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:03:04,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:03:04,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:03:04,462 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 22:03:04,462 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_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faa806fd1be90697a522dfc0988145f6572d5d87fac98caf7aa5fe5b66e6095c [2021-12-06 22:03:04,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:03:04,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:03:04,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:03:04,654 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:03:04,655 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:03:04,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2021-12-06 22:03:04,698 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/data/aaaff6bc1/b8801404b2924250917fd8149220f396/FLAG04f519ea9 [2021-12-06 22:03:05,109 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:03:05,109 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2021-12-06 22:03:05,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/data/aaaff6bc1/b8801404b2924250917fd8149220f396/FLAG04f519ea9 [2021-12-06 22:03:05,124 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/data/aaaff6bc1/b8801404b2924250917fd8149220f396 [2021-12-06 22:03:05,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:03:05,127 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:03:05,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:03:05,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:03:05,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:03:05,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:03:05" (1/1) ... [2021-12-06 22:03:05,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d2f8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05, skipping insertion in model container [2021-12-06 22:03:05,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:03:05" (1/1) ... [2021-12-06 22:03:05,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:03:05,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:03:05,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:03:05,268 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:03:05,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:03:05,285 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:03:05,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05 WrapperNode [2021-12-06 22:03:05,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:03:05,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:03:05,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:03:05,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:03:05,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05" (1/1) ... [2021-12-06 22:03:05,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05" (1/1) ... [2021-12-06 22:03:05,307 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2021-12-06 22:03:05,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:03:05,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:03:05,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:03:05,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:03:05,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05" (1/1) ... [2021-12-06 22:03:05,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05" (1/1) ... [2021-12-06 22:03:05,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05" (1/1) ... [2021-12-06 22:03:05,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05" (1/1) ... [2021-12-06 22:03:05,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05" (1/1) ... [2021-12-06 22:03:05,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05" (1/1) ... [2021-12-06 22:03:05,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05" (1/1) ... [2021-12-06 22:03:05,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:03:05,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:03:05,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:03:05,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:03:05,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05" (1/1) ... [2021-12-06 22:03:05,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:05,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:05,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:05,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 22:03:05,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:03:05,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:03:05,438 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:03:05,439 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:03:05,479 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:03:05,484 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:03:05,484 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:03:05,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:03:05 BoogieIcfgContainer [2021-12-06 22:03:05,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:03:05,486 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 22:03:05,486 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 22:03:05,489 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 22:03:05,490 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 22:03:05,490 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 10:03:05" (1/3) ... [2021-12-06 22:03:05,490 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53e6f80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 10:03:05, skipping insertion in model container [2021-12-06 22:03:05,491 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 22:03:05,491 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:03:05" (2/3) ... [2021-12-06 22:03:05,491 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53e6f80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 10:03:05, skipping insertion in model container [2021-12-06 22:03:05,491 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 22:03:05,491 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:03:05" (3/3) ... [2021-12-06 22:03:05,492 INFO L388 chiAutomizerObserver]: Analyzing ICFG McCarthyIterative.c [2021-12-06 22:03:05,526 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 22:03:05,526 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 22:03:05,526 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 22:03:05,526 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 22:03:05,526 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 22:03:05,527 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 22:03:05,527 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 22:03:05,527 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 22:03:05,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) 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) [2021-12-06 22:03:05,554 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-06 22:03:05,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:05,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:05,559 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 22:03:05,559 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-06 22:03:05,559 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 22:03:05,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) 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) [2021-12-06 22:03:05,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-06 22:03:05,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:05,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:05,561 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 22:03:05,561 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-06 22:03:05,568 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 3#L12-2true [2021-12-06 22:03:05,568 INFO L793 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!(main_~c~0#1 > 0); 9#L12true assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 3#L12-2true [2021-12-06 22:03:05,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:05,574 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-06 22:03:05,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:05,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496175342] [2021-12-06 22:03:05,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:05,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:05,647 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:05,661 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:05,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2021-12-06 22:03:05,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:05,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526731779] [2021-12-06 22:03:05,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:05,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:05,673 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:05,677 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2021-12-06 22:03:05,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:05,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377731895] [2021-12-06 22:03:05,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:05,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:05,687 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:05,692 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:05,761 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:05,762 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:05,762 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:05,762 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:05,762 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:03:05,763 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:05,763 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:05,763 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:05,763 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2021-12-06 22:03:05,763 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:05,763 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:05,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:05,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:05,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:05,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:05,871 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:05,871 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:03:05,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:05,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:05,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:05,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-06 22:03:05,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:05,877 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:05,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:05,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:05,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:05,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:05,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-06 22:03:05,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:05,914 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:05,948 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:03:05,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-06 22:03:05,951 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:05,951 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:05,951 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:05,951 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:05,951 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:03:05,951 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:05,951 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:05,951 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:05,951 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2021-12-06 22:03:05,951 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:05,951 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:05,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:05,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:05,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:05,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,001 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:06,004 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:03:06,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,006 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-06 22:03:06,007 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 [2021-12-06 22:03:06,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:06,015 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:06,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:06,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:06,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:06,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:06,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:06,020 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:03:06,026 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 22:03:06,026 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 22:03:06,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,028 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-06 22:03:06,029 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:03:06,029 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:03:06,030 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:03:06,030 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 211 Supporting invariants [] [2021-12-06 22:03:06,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:06,051 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:03:06,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:06,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:06,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:06,090 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:06,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:06,129 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-06 22:03:06,130 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-06 22:03:06,159 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) 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). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 24 states and 31 transitions. Complement of second has 6 states. [2021-12-06 22:03:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-06 22:03:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-12-06 22:03:06,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2021-12-06 22:03:06,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-06 22:03:06,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 2 letters. [2021-12-06 22:03:06,166 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:06,166 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 4 letters. Loop has 2 letters. [2021-12-06 22:03:06,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:06,167 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-06 22:03:06,167 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:06,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2021-12-06 22:03:06,169 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-06 22:03:06,172 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2021-12-06 22:03:06,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-12-06 22:03:06,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-12-06 22:03:06,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-12-06 22:03:06,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:06,178 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-06 22:03:06,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-12-06 22:03:06,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-06 22:03:06,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-12-06 22:03:06,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2021-12-06 22:03:06,196 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-06 22:03:06,196 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-06 22:03:06,196 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-06 22:03:06,196 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2021-12-06 22:03:06,196 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-06 22:03:06,196 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:06,196 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:06,197 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-06 22:03:06,197 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-06 22:03:06,197 INFO L791 eck$LassoCheckResult]: Stem: 73#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 74#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 75#L12-2 assume !!(main_~c~0#1 > 0); 72#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 68#L12-2 [2021-12-06 22:03:06,197 INFO L793 eck$LassoCheckResult]: Loop: 68#L12-2 assume !!(main_~c~0#1 > 0); 69#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 68#L12-2 [2021-12-06 22:03:06,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:06,198 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-12-06 22:03:06,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:06,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020081768] [2021-12-06 22:03:06,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:06,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:06,202 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:06,206 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:06,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:06,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2021-12-06 22:03:06,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:06,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641495814] [2021-12-06 22:03:06,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:06,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:06,211 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:06,214 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:06,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:06,215 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2021-12-06 22:03:06,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:06,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668859697] [2021-12-06 22:03:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:06,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:06,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:06,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668859697] [2021-12-06 22:03:06,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668859697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:06,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:06,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:03:06,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048415271] [2021-12-06 22:03:06,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:06,268 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:06,268 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:06,268 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:06,268 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:06,268 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:03:06,268 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:06,269 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:06,269 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2021-12-06 22:03:06,269 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:06,269 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:06,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,310 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:06,310 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:03:06,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,311 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-06 22:03:06,312 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:06,312 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:06,326 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:03:06,326 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 22:03:06,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-06 22:03:06,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,356 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-06 22:03:06,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:06,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:06,373 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:03:06,374 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 22:03:06,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-06 22:03:06,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,394 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-06 22:03:06,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:06,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:06,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-06 22:03:06,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,423 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-06 22:03:06,424 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:06,424 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:06,445 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:03:06,445 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0#1=1} Honda state: {ULTIMATE.start_main_~c~0#1=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0#1=1}, {ULTIMATE.start_main_~c~0#1=0}, {ULTIMATE.start_main_~c~0#1=0}] Lambdas: [1, 0, 0] Nus: [0, 0] [2021-12-06 22:03:06,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-06 22:03:06,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,476 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-06 22:03:06,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:06,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:06,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-06 22:03:06,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,505 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-06 22:03:06,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:06,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:06,538 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:03:06,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:06,541 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:06,541 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:06,541 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:06,541 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:06,541 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:03:06,541 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,541 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:06,541 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:06,541 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2021-12-06 22:03:06,541 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:06,541 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:06,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,582 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:06,582 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:03:06,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,583 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-06 22:03:06,585 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 [2021-12-06 22:03:06,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:06,592 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:06,592 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:06,592 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:06,595 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 22:03:06,595 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 22:03:06,598 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:03:06,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:06,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,618 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-06 22:03:06,620 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 [2021-12-06 22:03:06,626 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:06,627 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:06,627 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:06,627 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:06,629 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 22:03:06,629 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 22:03:06,632 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:03:06,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:06,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,659 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-06 22:03:06,660 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 [2021-12-06 22:03:06,667 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:06,667 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:06,667 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:06,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:06,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:06,668 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:06,669 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:06,670 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:03:06,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2021-12-06 22:03:06,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,689 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-06 22:03:06,690 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 [2021-12-06 22:03:06,697 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:06,697 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:06,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:06,698 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:06,698 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:06,699 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:06,699 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:06,701 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:03:06,704 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 22:03:06,705 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 22:03:06,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,706 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-06 22:03:06,707 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:03:06,707 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:03:06,707 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:03:06,707 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 211 Supporting invariants [] [2021-12-06 22:03:06,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-06 22:03:06,726 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:03:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:06,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:06,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:06,742 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:06,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:06,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:06,747 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-06 22:03:06,747 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-06 22:03:06,753 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 12 states and 17 transitions. Complement of second has 5 states. [2021-12-06 22:03:06,753 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 [2021-12-06 22:03:06,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-06 22:03:06,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-12-06 22:03:06,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2021-12-06 22:03:06,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:06,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2021-12-06 22:03:06,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:06,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2021-12-06 22:03:06,755 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:06,755 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2021-12-06 22:03:06,755 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-06 22:03:06,756 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2021-12-06 22:03:06,756 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-06 22:03:06,756 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-06 22:03:06,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2021-12-06 22:03:06,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:06,756 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-12-06 22:03:06,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2021-12-06 22:03:06,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-06 22:03:06,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 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) [2021-12-06 22:03:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2021-12-06 22:03:06,758 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2021-12-06 22:03:06,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:06,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:03:06,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:03:06,761 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-06 22:03:06,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:06,771 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-12-06 22:03:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:03:06,772 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 19 transitions. [2021-12-06 22:03:06,773 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-06 22:03:06,774 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 17 transitions. [2021-12-06 22:03:06,774 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-06 22:03:06,774 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-06 22:03:06,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2021-12-06 22:03:06,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:06,774 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-06 22:03:06,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2021-12-06 22:03:06,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-12-06 22:03:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 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) [2021-12-06 22:03:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2021-12-06 22:03:06,775 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-06 22:03:06,775 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2021-12-06 22:03:06,775 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-06 22:03:06,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2021-12-06 22:03:06,776 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-12-06 22:03:06,776 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:06,776 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:06,776 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2021-12-06 22:03:06,776 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-06 22:03:06,777 INFO L791 eck$LassoCheckResult]: Stem: 160#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 161#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 155#L12-2 assume !!(main_~c~0#1 > 0); 156#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 166#L12-2 assume !!(main_~c~0#1 > 0); 162#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 163#L12-2 assume !!(main_~c~0#1 > 0); 158#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 165#L12-2 [2021-12-06 22:03:06,777 INFO L793 eck$LassoCheckResult]: Loop: 165#L12-2 assume !!(main_~c~0#1 > 0); 164#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 165#L12-2 [2021-12-06 22:03:06,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:06,777 INFO L85 PathProgramCache]: Analyzing trace with hash 297591406, now seen corresponding path program 2 times [2021-12-06 22:03:06,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:06,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103651892] [2021-12-06 22:03:06,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:06,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:06,783 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:06,789 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:06,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:06,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2021-12-06 22:03:06,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:06,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201640171] [2021-12-06 22:03:06,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:06,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:06,792 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:06,795 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:06,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:06,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1777467309, now seen corresponding path program 3 times [2021-12-06 22:03:06,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:06,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417560811] [2021-12-06 22:03:06,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:06,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:03:06,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:06,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417560811] [2021-12-06 22:03:06,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417560811] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:03:06,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707606682] [2021-12-06 22:03:06,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:03:06,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:03:06,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,822 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 22:03:06,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 22:03:06,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:03:06,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:03:06,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:03:06,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:03:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:03:06,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707606682] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:03:06,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:03:06,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-12-06 22:03:06,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308829556] [2021-12-06 22:03:06,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:03:06,926 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:06,926 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:06,926 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:06,926 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:06,926 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:03:06,926 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,926 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:06,926 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:06,926 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2021-12-06 22:03:06,926 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:06,927 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:06,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:06,959 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:06,959 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:03:06,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,960 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-06 22:03:06,961 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:06,961 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:06,973 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:03:06,973 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 22:03:06,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-06 22:03:06,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:06,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:06,993 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:06,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-06 22:03:06,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:06,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:07,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-06 22:03:07,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,021 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-06 22:03:07,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:07,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:07,039 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:03:07,039 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0#1=1} Honda state: {ULTIMATE.start_main_~c~0#1=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0#1=1}, {ULTIMATE.start_main_~c~0#1=0}, {ULTIMATE.start_main_~c~0#1=0}] Lambdas: [1, 0, 0] Nus: [0, 0] [2021-12-06 22:03:07,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-06 22:03:07,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,072 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-06 22:03:07,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:07,074 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:07,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-06 22:03:07,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,102 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-06 22:03:07,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:07,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:07,134 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:03:07,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-12-06 22:03:07,136 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:07,136 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:07,136 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:07,136 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:07,136 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:03:07,136 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,136 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:07,137 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:07,137 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2021-12-06 22:03:07,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:07,137 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:07,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,166 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:07,166 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:03:07,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,167 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-06 22:03:07,168 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 [2021-12-06 22:03:07,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:07,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:07,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:07,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:07,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:07,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:07,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:07,178 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:03:07,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2021-12-06 22:03:07,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,202 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-06 22:03:07,203 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 [2021-12-06 22:03:07,212 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:07,212 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:07,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:07,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:07,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:07,213 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:07,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:07,215 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:03:07,220 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 22:03:07,221 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 22:03:07,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,223 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-06 22:03:07,224 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:03:07,224 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:03:07,224 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:03:07,224 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 211 Supporting invariants [] [2021-12-06 22:03:07,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:07,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-06 22:03:07,243 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:03:07,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,265 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:07,270 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-06 22:03:07,271 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 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) [2021-12-06 22:03:07,277 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. 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 14 states and 20 transitions. Complement of second has 5 states. [2021-12-06 22:03:07,277 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 [2021-12-06 22:03:07,278 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) [2021-12-06 22:03:07,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-12-06 22:03:07,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2021-12-06 22:03:07,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,278 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:07,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,298 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:07,303 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-06 22:03:07,303 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 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) [2021-12-06 22:03:07,309 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. 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 14 states and 20 transitions. Complement of second has 5 states. [2021-12-06 22:03:07,310 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 [2021-12-06 22:03:07,311 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) [2021-12-06 22:03:07,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-12-06 22:03:07,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2021-12-06 22:03:07,311 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,311 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,332 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:07,337 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 1 loop predicates [2021-12-06 22:03:07,337 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 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) [2021-12-06 22:03:07,342 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. 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 16 states and 23 transitions. Complement of second has 4 states. [2021-12-06 22:03:07,343 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 [2021-12-06 22:03:07,343 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) [2021-12-06 22:03:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-06 22:03:07,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2021-12-06 22:03:07,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2021-12-06 22:03:07,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2021-12-06 22:03:07,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,344 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2021-12-06 22:03:07,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-06 22:03:07,345 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2021-12-06 22:03:07,345 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-06 22:03:07,345 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-06 22:03:07,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2021-12-06 22:03:07,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:07,346 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2021-12-06 22:03:07,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2021-12-06 22:03:07,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2021-12-06 22:03:07,346 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) [2021-12-06 22:03:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-12-06 22:03:07,346 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-12-06 22:03:07,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:07,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:03:07,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:03:07,347 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2021-12-06 22:03:07,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:07,356 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2021-12-06 22:03:07,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:03:07,357 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2021-12-06 22:03:07,357 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-06 22:03:07,357 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 12 states and 15 transitions. [2021-12-06 22:03:07,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-06 22:03:07,358 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-06 22:03:07,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2021-12-06 22:03:07,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:07,358 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-12-06 22:03:07,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2021-12-06 22:03:07,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2021-12-06 22:03:07,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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) [2021-12-06 22:03:07,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2021-12-06 22:03:07,359 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-06 22:03:07,359 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-06 22:03:07,359 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-06 22:03:07,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2021-12-06 22:03:07,359 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-06 22:03:07,359 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:07,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:07,359 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 22:03:07,359 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-12-06 22:03:07,360 INFO L791 eck$LassoCheckResult]: Stem: 413#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 414#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 408#L12-2 [2021-12-06 22:03:07,360 INFO L793 eck$LassoCheckResult]: Loop: 408#L12-2 assume !!(main_~c~0#1 > 0); 409#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 417#L12-2 assume !!(main_~c~0#1 > 0); 415#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 408#L12-2 [2021-12-06 22:03:07,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,360 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-06 22:03:07,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:07,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364025225] [2021-12-06 22:03:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:07,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,363 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,364 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:07,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1266953, now seen corresponding path program 1 times [2021-12-06 22:03:07,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:07,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305146794] [2021-12-06 22:03:07,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:07,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,368 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,371 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:07,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,372 INFO L85 PathProgramCache]: Analyzing trace with hash 889694155, now seen corresponding path program 4 times [2021-12-06 22:03:07,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:07,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361497232] [2021-12-06 22:03:07,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:07,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,376 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:07,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,379 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:07,411 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:07,411 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:07,411 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:07,411 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:07,411 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:03:07,411 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,411 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:07,411 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:07,411 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2021-12-06 22:03:07,411 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:07,411 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:07,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,441 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:07,441 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:03:07,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,442 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-06 22:03:07,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:07,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:07,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:07,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,469 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-06 22:03:07,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:07,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:07,479 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:03:07,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-12-06 22:03:07,497 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:07,497 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:07,497 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:07,497 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:07,497 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:03:07,497 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,497 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:07,497 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:07,497 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2021-12-06 22:03:07,497 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:07,497 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:07,498 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,525 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:07,525 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:03:07,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,526 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-06 22:03:07,527 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 [2021-12-06 22:03:07,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:07,534 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:07,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:07,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:07,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:07,535 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:07,535 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:07,537 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:03:07,538 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 22:03:07,539 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 22:03:07,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,539 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-06 22:03:07,540 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:03:07,540 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:03:07,540 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:03:07,541 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 201 Supporting invariants [] [2021-12-06 22:03:07,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:07,559 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:03:07,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:07,596 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 [2021-12-06 22:03:07,596 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-06 22:03:07,602 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 21 states and 27 transitions. Complement of second has 5 states. [2021-12-06 22:03:07,602 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 [2021-12-06 22:03:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-06 22:03:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2021-12-06 22:03:07,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-06 22:03:07,603 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,603 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:07,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:07,636 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 [2021-12-06 22:03:07,636 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-06 22:03:07,647 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 13 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 25 states and 33 transitions. Complement of second has 7 states. [2021-12-06 22:03:07,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 22:03:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-12-06 22:03:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2021-12-06 22:03:07,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-06 22:03:07,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-06 22:03:07,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,648 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-06 22:03:07,648 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,648 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 33 transitions. [2021-12-06 22:03:07,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-06 22:03:07,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 17 states and 22 transitions. [2021-12-06 22:03:07,650 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-12-06 22:03:07,650 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-12-06 22:03:07,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 22 transitions. [2021-12-06 22:03:07,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:07,650 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 22 transitions. [2021-12-06 22:03:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 22 transitions. [2021-12-06 22:03:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-12-06 22:03:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 14 states have internal predecessors, (20), 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) [2021-12-06 22:03:07,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2021-12-06 22:03:07,651 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2021-12-06 22:03:07,651 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 20 transitions. [2021-12-06 22:03:07,651 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-06 22:03:07,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 20 transitions. [2021-12-06 22:03:07,651 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-06 22:03:07,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:07,652 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:07,652 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1, 1] [2021-12-06 22:03:07,652 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-12-06 22:03:07,652 INFO L791 eck$LassoCheckResult]: Stem: 533#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 534#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 530#L12-2 assume !!(main_~c~0#1 > 0); 531#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 537#L12-2 assume !!(main_~c~0#1 > 0); 539#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 543#L12-2 assume !!(main_~c~0#1 > 0); 542#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 538#L12-2 assume !!(main_~c~0#1 > 0); 535#L12 [2021-12-06 22:03:07,652 INFO L793 eck$LassoCheckResult]: Loop: 535#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 536#L12-2 assume !!(main_~c~0#1 > 0); 535#L12 [2021-12-06 22:03:07,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,652 INFO L85 PathProgramCache]: Analyzing trace with hash 635458587, now seen corresponding path program 5 times [2021-12-06 22:03:07,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:07,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224411559] [2021-12-06 22:03:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:07,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,657 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,661 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:07,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2021-12-06 22:03:07,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:07,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541524932] [2021-12-06 22:03:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:07,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,664 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,666 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:07,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,666 INFO L85 PathProgramCache]: Analyzing trace with hash 790346520, now seen corresponding path program 6 times [2021-12-06 22:03:07,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:07,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891948767] [2021-12-06 22:03:07,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:07,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,671 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,676 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:07,690 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:07,690 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:07,690 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:07,690 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:07,690 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:03:07,690 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,690 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:07,690 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:07,690 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2021-12-06 22:03:07,690 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:07,690 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:07,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,721 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:07,721 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:03:07,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,722 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-06 22:03:07,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:07,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:07,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-12-06 22:03:07,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,750 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-06 22:03:07,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:07,751 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:07,781 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:03:07,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-12-06 22:03:07,783 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:07,783 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:07,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:07,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:07,783 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:03:07,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:07,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:07,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2021-12-06 22:03:07,783 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:07,783 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:07,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:07,808 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:07,809 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:03:07,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,809 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-06 22:03:07,810 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 [2021-12-06 22:03:07,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:07,817 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:07,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:07,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:07,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:07,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:07,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:07,820 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:03:07,821 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-06 22:03:07,821 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 22:03:07,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:07,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:07,822 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:07,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-06 22:03:07,824 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:03:07,824 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:03:07,824 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:03:07,824 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-06 22:03:07,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:07,842 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:03:07,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,862 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:07,873 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 [2021-12-06 22:03:07,873 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 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) [2021-12-06 22:03:07,876 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 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 16 states and 21 transitions. Complement of second has 3 states. [2021-12-06 22:03:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-12-06 22:03:07,877 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) [2021-12-06 22:03:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2021-12-06 22:03:07,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 9 letters. Loop has 2 letters. [2021-12-06 22:03:07,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,878 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,898 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:07,909 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 [2021-12-06 22:03:07,909 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 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) [2021-12-06 22:03:07,912 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 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 16 states and 21 transitions. Complement of second has 3 states. [2021-12-06 22:03:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-12-06 22:03:07,913 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) [2021-12-06 22:03:07,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2021-12-06 22:03:07,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 9 letters. Loop has 2 letters. [2021-12-06 22:03:07,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,913 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:07,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:07,932 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:03:07,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:07,941 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 [2021-12-06 22:03:07,941 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 20 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) [2021-12-06 22:03:07,946 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 20 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 25 states and 30 transitions. Complement of second has 4 states. [2021-12-06 22:03:07,946 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 [2021-12-06 22:03:07,946 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) [2021-12-06 22:03:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-12-06 22:03:07,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 2 letters. [2021-12-06 22:03:07,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2021-12-06 22:03:07,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-06 22:03:07,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:07,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2021-12-06 22:03:07,948 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-06 22:03:07,949 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 20 states and 25 transitions. [2021-12-06 22:03:07,949 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-12-06 22:03:07,949 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-12-06 22:03:07,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 25 transitions. [2021-12-06 22:03:07,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:07,949 INFO L681 BuchiCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-12-06 22:03:07,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 25 transitions. [2021-12-06 22:03:07,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2021-12-06 22:03:07,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-12-06 22:03:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2021-12-06 22:03:07,950 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-12-06 22:03:07,950 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 21 transitions. [2021-12-06 22:03:07,950 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-06 22:03:07,950 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 21 transitions. [2021-12-06 22:03:07,951 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-06 22:03:07,951 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:07,951 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:07,951 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1, 1] [2021-12-06 22:03:07,951 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2021-12-06 22:03:07,951 INFO L791 eck$LassoCheckResult]: Stem: 730#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 731#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 727#L12-2 assume !!(main_~c~0#1 > 0); 728#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 742#L12-2 assume !!(main_~c~0#1 > 0); 736#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 740#L12-2 assume !!(main_~c~0#1 > 0); 739#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 735#L12-2 assume !!(main_~c~0#1 > 0); 732#L12 [2021-12-06 22:03:07,951 INFO L793 eck$LassoCheckResult]: Loop: 732#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 733#L12-2 assume !!(main_~c~0#1 > 0); 737#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 738#L12-2 assume !!(main_~c~0#1 > 0); 732#L12 [2021-12-06 22:03:07,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash 635458587, now seen corresponding path program 7 times [2021-12-06 22:03:07,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:07,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92222294] [2021-12-06 22:03:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:07,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,956 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,960 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:07,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 2 times [2021-12-06 22:03:07,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:07,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114080716] [2021-12-06 22:03:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:07,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,968 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,972 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash -686205165, now seen corresponding path program 8 times [2021-12-06 22:03:07,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:07,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699834653] [2021-12-06 22:03:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:07,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,978 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:07,985 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:07,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-12-06 22:03:08,011 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:08,012 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:08,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:08,012 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:08,012 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:08,012 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:03:08,012 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,012 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:08,012 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:08,012 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2021-12-06 22:03:08,012 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:08,012 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:08,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-06 22:03:08,040 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:08,041 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:03:08,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:08,041 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:08,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-06 22:03:08,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:08,042 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:08,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-12-06 22:03:08,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:08,069 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:08,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-06 22:03:08,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:08,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:08,079 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:03:08,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-12-06 22:03:08,097 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:08,097 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:08,097 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:08,097 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:08,097 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:03:08,097 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,097 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:08,097 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:08,097 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2021-12-06 22:03:08,097 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:08,097 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:08,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,122 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:08,122 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:03:08,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:08,123 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:08,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-06 22:03:08,124 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 [2021-12-06 22:03:08,131 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:08,131 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:08,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:08,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:08,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:08,132 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:08,132 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:08,134 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:03:08,135 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 22:03:08,135 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 22:03:08,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:08,136 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:08,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-06 22:03:08,137 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:03:08,137 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:03:08,137 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:03:08,137 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 221 Supporting invariants [] [2021-12-06 22:03:08,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-12-06 22:03:08,155 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:03:08,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:08,196 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-06 22:03:08,196 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-06 22:03:08,211 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) Result 27 states and 33 transitions. Complement of second has 7 states. [2021-12-06 22:03:08,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 22:03:08,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-06 22:03:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2021-12-06 22:03:08,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-06 22:03:08,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:08,212 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:08,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:08,252 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-06 22:03:08,253 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-06 22:03:08,267 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) Result 26 states and 33 transitions. Complement of second has 7 states. [2021-12-06 22:03:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 22:03:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-06 22:03:08,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-12-06 22:03:08,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-06 22:03:08,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:08,268 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:08,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:08,314 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 3 loop predicates [2021-12-06 22:03:08,314 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-06 22:03:08,328 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 21 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) Result 42 states and 53 transitions. Complement of second has 8 states. [2021-12-06 22:03:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 22:03:08,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-06 22:03:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-12-06 22:03:08,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-06 22:03:08,330 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:08,330 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-06 22:03:08,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:08,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 8 letters. [2021-12-06 22:03:08,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:08,331 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 53 transitions. [2021-12-06 22:03:08,333 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-12-06 22:03:08,333 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 31 states and 40 transitions. [2021-12-06 22:03:08,334 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-06 22:03:08,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-06 22:03:08,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 40 transitions. [2021-12-06 22:03:08,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:08,334 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 40 transitions. [2021-12-06 22:03:08,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 40 transitions. [2021-12-06 22:03:08,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2021-12-06 22:03:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 25 states have internal predecessors, (35), 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) [2021-12-06 22:03:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2021-12-06 22:03:08,337 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-12-06 22:03:08,337 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 35 transitions. [2021-12-06 22:03:08,337 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-06 22:03:08,337 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 35 transitions. [2021-12-06 22:03:08,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-12-06 22:03:08,338 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:08,338 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:08,339 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 3, 3, 1, 1] [2021-12-06 22:03:08,339 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2021-12-06 22:03:08,339 INFO L791 eck$LassoCheckResult]: Stem: 1005#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1006#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 1007#L12-2 assume !!(main_~c~0#1 > 0); 1016#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 1017#L12-2 assume !!(main_~c~0#1 > 0); 1014#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 1012#L12-2 assume !!(main_~c~0#1 > 0); 1011#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1001#L12-2 assume !!(main_~c~0#1 > 0); 1002#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1009#L12-2 assume !!(main_~c~0#1 > 0); 1024#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1023#L12-2 assume !!(main_~c~0#1 > 0); 1021#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 1020#L12-2 assume !!(main_~c~0#1 > 0); 1008#L12 [2021-12-06 22:03:08,340 INFO L793 eck$LassoCheckResult]: Loop: 1008#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1009#L12-2 assume !!(main_~c~0#1 > 0); 1024#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 1023#L12-2 assume !!(main_~c~0#1 > 0); 1021#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 1020#L12-2 assume !!(main_~c~0#1 > 0); 1008#L12 [2021-12-06 22:03:08,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:08,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1981740944, now seen corresponding path program 9 times [2021-12-06 22:03:08,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:08,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370174192] [2021-12-06 22:03:08,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:08,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,367 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:03:08,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:08,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370174192] [2021-12-06 22:03:08,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370174192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:08,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:08,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:03:08,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414508886] [2021-12-06 22:03:08,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:08,368 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-06 22:03:08,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:08,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1298898678, now seen corresponding path program 3 times [2021-12-06 22:03:08,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:08,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284430179] [2021-12-06 22:03:08,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:08,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:08,373 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:08,377 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:08,416 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:08,416 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:08,416 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:08,416 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:08,416 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 22:03:08,416 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,416 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:08,416 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:08,417 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2021-12-06 22:03:08,417 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:08,417 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:08,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,445 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:08,445 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 22:03:08,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:08,446 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:08,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-06 22:03:08,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:08,447 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:08,459 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 22:03:08,459 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 22:03:08,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-12-06 22:03:08,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:08,478 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:08,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-12-06 22:03:08,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 22:03:08,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:08,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-12-06 22:03:08,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:08,506 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:08,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-06 22:03:08,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 22:03:08,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 22:03:08,564 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 22:03:08,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:08,566 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 22:03:08,566 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 22:03:08,566 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 22:03:08,566 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 22:03:08,566 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 22:03:08,566 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,566 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 22:03:08,566 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 22:03:08,566 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2021-12-06 22:03:08,566 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 22:03:08,566 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 22:03:08,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,569 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 22:03:08,594 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 22:03:08,594 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 22:03:08,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:08,595 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:08,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-06 22:03:08,596 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 22:03:08,602 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:08,602 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:08,602 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:08,603 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:08,604 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 22:03:08,604 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 22:03:08,606 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 22:03:08,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-12-06 22:03:08,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:08,625 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:08,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-06 22:03:08,627 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 [2021-12-06 22:03:08,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 22:03:08,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 22:03:08,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 22:03:08,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 22:03:08,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 22:03:08,634 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 22:03:08,634 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 22:03:08,636 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 22:03:08,638 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 22:03:08,638 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-06 22:03:08,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 22:03:08,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:03:08,641 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 22:03:08,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-06 22:03:08,646 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 22:03:08,646 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 22:03:08,646 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 22:03:08,646 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0#1) = 1*ULTIMATE.start_main_~c~0#1 Supporting invariants [] [2021-12-06 22:03:08,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-12-06 22:03:08,675 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 22:03:08,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:08,734 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-06 22:03:08,734 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-12-06 22:03:08,738 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) Result 27 states and 36 transitions. Complement of second has 3 states. [2021-12-06 22:03:08,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-12-06 22:03:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-12-06 22:03:08,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2021-12-06 22:03:08,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 15 letters. Loop has 6 letters. [2021-12-06 22:03:08,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:08,739 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:08,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:08,802 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-06 22:03:08,802 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-12-06 22:03:08,805 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) Result 27 states and 36 transitions. Complement of second has 3 states. [2021-12-06 22:03:08,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-12-06 22:03:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-12-06 22:03:08,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 3 transitions. [2021-12-06 22:03:08,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 3 transitions. Stem has 15 letters. Loop has 6 letters. [2021-12-06 22:03:08,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:08,807 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:08,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:08,867 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 5 loop predicates [2021-12-06 22:03:08,867 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-12-06 22:03:08,877 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) Result 43 states and 61 transitions. Complement of second has 4 states. [2021-12-06 22:03:08,877 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 [2021-12-06 22:03:08,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-12-06 22:03:08,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-06 22:03:08,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 15 letters. Loop has 6 letters. [2021-12-06 22:03:08,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:08,878 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:08,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-12-06 22:03:08,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:08,940 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-06 22:03:08,940 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-12-06 22:03:08,949 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 35 transitions. cyclomatic complexity: 12. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) Result 43 states and 61 transitions. Complement of second has 4 states. [2021-12-06 22:03:08,949 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 [2021-12-06 22:03:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-12-06 22:03:08,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-12-06 22:03:08,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 15 letters. Loop has 6 letters. [2021-12-06 22:03:08,950 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:08,950 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 22:03:08,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-12-06 22:03:08,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:08,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:03:08,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:03:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:03:09,005 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-12-06 22:03:09,005 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-12-06 22:03:09,073 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,073 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,079 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,079 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,087 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,087 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,093 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,093 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,106 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,106 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,107 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,107 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,107 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,107 WARN L278 uchiComplementFKVNwa]: big8 [2021-12-06 22:03:09,108 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 26 states and 35 transitions. cyclomatic complexity: 12 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) Result 719 states and 1229 transitions. Complement of second has 174 states 11 powerset states163 rank states. The highest rank that occured is 7 [2021-12-06 22:03:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2021-12-06 22:03:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2021-12-06 22:03:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 31 transitions. [2021-12-06 22:03:09,109 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 15 letters. Loop has 6 letters. [2021-12-06 22:03:09,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:09,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 21 letters. Loop has 6 letters. [2021-12-06 22:03:09,110 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:09,110 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 31 transitions. Stem has 15 letters. Loop has 12 letters. [2021-12-06 22:03:09,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 22:03:09,111 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 719 states and 1229 transitions. [2021-12-06 22:03:09,119 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 90 [2021-12-06 22:03:09,124 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 719 states to 450 states and 747 transitions. [2021-12-06 22:03:09,125 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-12-06 22:03:09,125 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 119 [2021-12-06 22:03:09,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 450 states and 747 transitions. [2021-12-06 22:03:09,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:09,125 INFO L681 BuchiCegarLoop]: Abstraction has 450 states and 747 transitions. [2021-12-06 22:03:09,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states and 747 transitions. [2021-12-06 22:03:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 157. [2021-12-06 22:03:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 157 states have (on average 1.78343949044586) internal successors, (280), 156 states have internal predecessors, (280), 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) [2021-12-06 22:03:09,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 280 transitions. [2021-12-06 22:03:09,139 INFO L704 BuchiCegarLoop]: Abstraction has 157 states and 280 transitions. [2021-12-06 22:03:09,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:09,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:03:09,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:03:09,140 INFO L87 Difference]: Start difference. First operand 157 states and 280 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-12-06 22:03:09,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:09,149 INFO L93 Difference]: Finished difference Result 189 states and 305 transitions. [2021-12-06 22:03:09,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:03:09,150 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 189 states and 305 transitions. [2021-12-06 22:03:09,151 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2021-12-06 22:03:09,153 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 189 states to 174 states and 280 transitions. [2021-12-06 22:03:09,153 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-12-06 22:03:09,153 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-12-06 22:03:09,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 280 transitions. [2021-12-06 22:03:09,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 22:03:09,153 INFO L681 BuchiCegarLoop]: Abstraction has 174 states and 280 transitions. [2021-12-06 22:03:09,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 280 transitions. [2021-12-06 22:03:09,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 151. [2021-12-06 22:03:09,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 151 states have (on average 1.6754966887417218) internal successors, (253), 150 states have internal predecessors, (253), 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) [2021-12-06 22:03:09,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 253 transitions. [2021-12-06 22:03:09,160 INFO L704 BuchiCegarLoop]: Abstraction has 151 states and 253 transitions. [2021-12-06 22:03:09,160 INFO L587 BuchiCegarLoop]: Abstraction has 151 states and 253 transitions. [2021-12-06 22:03:09,160 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-06 22:03:09,160 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 151 states and 253 transitions. [2021-12-06 22:03:09,161 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 49 [2021-12-06 22:03:09,161 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 22:03:09,161 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 22:03:09,161 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1, 1] [2021-12-06 22:03:09,161 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 3, 3] [2021-12-06 22:03:09,161 INFO L791 eck$LassoCheckResult]: Stem: 2779#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2780#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1, main_~c~0#1;havoc main_~x~0#1;havoc main_~c~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~c~0#1 := 1; 2838#L12-2 assume !!(main_~c~0#1 > 0); 2839#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2836#L12-2 assume !!(main_~c~0#1 > 0); 2831#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2827#L12-2 assume !!(main_~c~0#1 > 0); 2828#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2775#L12-2 assume !!(main_~c~0#1 > 0); 2776#L12 [2021-12-06 22:03:09,161 INFO L793 eck$LassoCheckResult]: Loop: 2776#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2858#L12-2 assume !!(main_~c~0#1 > 0); 2857#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2855#L12-2 assume !!(main_~c~0#1 > 0); 2808#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2862#L12-2 assume !!(main_~c~0#1 > 0); 2805#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2791#L12-2 assume !!(main_~c~0#1 > 0); 2860#L12 assume main_~x~0#1 > 100;main_~x~0#1 := main_~x~0#1 - 10;main_~c~0#1 := main_~c~0#1 - 1; 2800#L12-2 assume !!(main_~c~0#1 > 0); 2811#L12 assume !(main_~x~0#1 > 100);main_~x~0#1 := 11 + main_~x~0#1;main_~c~0#1 := 1 + main_~c~0#1; 2789#L12-2 assume !!(main_~c~0#1 > 0); 2776#L12 [2021-12-06 22:03:09,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash 635458587, now seen corresponding path program 10 times [2021-12-06 22:03:09,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:09,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347989200] [2021-12-06 22:03:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:09,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:09,165 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:03:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:03:09,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:03:09,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:03:09,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1074943081, now seen corresponding path program 4 times [2021-12-06 22:03:09,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:03:09,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055386487] [2021-12-06 22:03:09,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:03:09,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:03:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:03:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 22:03:09,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:03:09,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055386487] [2021-12-06 22:03:09,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055386487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:03:09,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:03:09,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:03:09,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007543528] [2021-12-06 22:03:09,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:03:09,181 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-06 22:03:09,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:03:09,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:03:09,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:03:09,182 INFO L87 Difference]: Start difference. First operand 151 states and 253 transitions. cyclomatic complexity: 115 Second operand has 4 states, 4 states have (on average 2.0) 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) [2021-12-06 22:03:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:03:09,188 INFO L93 Difference]: Finished difference Result 136 states and 207 transitions. [2021-12-06 22:03:09,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:03:09,189 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 207 transitions. [2021-12-06 22:03:09,190 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 22:03:09,190 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 0 states and 0 transitions. [2021-12-06 22:03:09,190 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 22:03:09,190 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 22:03:09,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 22:03:09,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 22:03:09,190 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:03:09,190 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:03:09,190 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:03:09,190 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-06 22:03:09,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-06 22:03:09,190 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 22:03:09,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-06 22:03:09,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.12 10:03:09 BoogieIcfgContainer [2021-12-06 22:03:09,195 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-06 22:03:09,195 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:03:09,195 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:03:09,196 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:03:09,196 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:03:05" (3/4) ... [2021-12-06 22:03:09,198 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 22:03:09,198 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:03:09,198 INFO L158 Benchmark]: Toolchain (without parser) took 4071.29ms. Allocated memory was 113.2MB in the beginning and 146.8MB in the end (delta: 33.6MB). Free memory was 75.9MB in the beginning and 75.5MB in the end (delta: 474.7kB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2021-12-06 22:03:09,198 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory was 92.2MB in the beginning and 92.0MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:03:09,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 158.00ms. Allocated memory is still 113.2MB. Free memory was 75.6MB in the beginning and 89.6MB in the end (delta: -14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 22:03:09,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.84ms. Allocated memory is still 113.2MB. Free memory was 89.6MB in the beginning and 88.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:03:09,199 INFO L158 Benchmark]: Boogie Preprocessor took 11.72ms. Allocated memory is still 113.2MB. Free memory was 88.1MB in the beginning and 87.6MB in the end (delta: 549.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:03:09,199 INFO L158 Benchmark]: RCFGBuilder took 165.53ms. Allocated memory is still 113.2MB. Free memory was 87.6MB in the beginning and 79.7MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-06 22:03:09,200 INFO L158 Benchmark]: BuchiAutomizer took 3708.88ms. Allocated memory was 113.2MB in the beginning and 146.8MB in the end (delta: 33.6MB). Free memory was 79.2MB in the beginning and 76.5MB in the end (delta: 2.7MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. [2021-12-06 22:03:09,200 INFO L158 Benchmark]: Witness Printer took 2.25ms. Allocated memory is still 146.8MB. Free memory was 76.5MB in the beginning and 75.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:03:09,201 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 113.2MB. Free memory was 92.2MB in the beginning and 92.0MB in the end (delta: 153.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 158.00ms. Allocated memory is still 113.2MB. Free memory was 75.6MB in the beginning and 89.6MB in the end (delta: -14.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.84ms. Allocated memory is still 113.2MB. Free memory was 89.6MB in the beginning and 88.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 11.72ms. Allocated memory is still 113.2MB. Free memory was 88.1MB in the beginning and 87.6MB in the end (delta: 549.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 165.53ms. Allocated memory is still 113.2MB. Free memory was 87.6MB in the beginning and 79.7MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 3708.88ms. Allocated memory was 113.2MB in the beginning and 146.8MB in the end (delta: 33.6MB). Free memory was 79.2MB in the beginning and 76.5MB in the end (delta: 2.7MB). Peak memory consumption was 37.8MB. Max. memory is 16.1GB. * Witness Printer took 2.25ms. Allocated memory is still 146.8MB. Free memory was 76.5MB in the beginning and 75.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (4 trivial, 3 deterministic, 4 nondeterministic). One deterministic module has affine ranking function 211 + -2 * x and consists of 4 locations. One deterministic module has affine ranking function 211 + -2 * x and consists of 3 locations. One deterministic module has affine ranking function 201 + -2 * x and consists of 4 locations. One nondeterministic module has affine ranking function 211 + -2 * x and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function 221 + -2 * x and consists of 4 locations. One nondeterministic module has affine ranking function c and consists of 8 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 9 iterations. TraceHistogramMax:7. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 7. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 337 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 151 states and ocurred in iteration 7. Nontrivial modules had stage [2, 1, 3, 0, 1]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 8/10 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 80 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 153 IncrementalHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 104 mSDtfsCounter, 153 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT4 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax162 hnf97 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf94 smp100 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 15ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-06 22:03:09,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 22:03:09,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2927bd0-faa7-4eb6-bec1-40b8e7a7f3fa/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE