./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.15.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 28b8f223b97939bdb3ffe1e6bb25bd5d633f35c4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:26:29,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:26:29,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:26:29,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:26:29,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:26:29,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:26:29,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:26:29,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:26:29,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:26:29,473 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:26:29,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:26:29,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:26:29,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:26:29,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:26:29,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:26:29,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:26:29,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:26:29,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:26:29,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:26:29,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:26:29,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:26:29,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:26:29,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:26:29,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:26:29,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:26:29,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:26:29,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:26:29,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:26:29,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:26:29,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:26:29,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:26:29,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:26:29,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:26:29,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:26:29,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:26:29,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:26:29,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:26:29,517 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:26:29,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:26:29,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:26:29,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:26:29,521 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-13 00:26:29,550 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:26:29,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:26:29,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:26:29,551 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:26:29,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:26:29,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:26:29,553 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:26:29,553 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:26:29,553 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:26:29,553 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:26:29,553 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:26:29,554 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:26:29,554 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:26:29,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:26:29,554 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:26:29,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:26:29,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:26:29,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:26:29,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:26:29,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:26:29,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:26:29,556 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:26:29,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:26:29,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:26:29,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:26:29,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:26:29,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:26:29,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:26:29,557 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:26:29,558 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:26:29,558 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_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28b8f223b97939bdb3ffe1e6bb25bd5d633f35c4 [2021-10-13 00:26:29,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:26:29,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:26:29,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:26:29,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:26:29,867 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:26:29,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-restricted-15/b.15.c [2021-10-13 00:26:29,941 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/data/a219b456c/bb6d116230794686acc20f281168319e/FLAGc80315037 [2021-10-13 00:26:30,457 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:26:30,458 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/sv-benchmarks/c/termination-restricted-15/b.15.c [2021-10-13 00:26:30,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/data/a219b456c/bb6d116230794686acc20f281168319e/FLAGc80315037 [2021-10-13 00:26:30,851 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/data/a219b456c/bb6d116230794686acc20f281168319e [2021-10-13 00:26:30,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:26:30,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:26:30,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:26:30,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:26:30,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:26:30,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:26:30" (1/1) ... [2021-10-13 00:26:30,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c97ec88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:30, skipping insertion in model container [2021-10-13 00:26:30,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:26:30" (1/1) ... [2021-10-13 00:26:30,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:26:30,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:26:31,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:26:31,175 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:26:31,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:26:31,208 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:26:31,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:31 WrapperNode [2021-10-13 00:26:31,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:26:31,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:26:31,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:26:31,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:26:31,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:31" (1/1) ... [2021-10-13 00:26:31,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:31" (1/1) ... [2021-10-13 00:26:31,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:26:31,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:26:31,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:26:31,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:26:31,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:31" (1/1) ... [2021-10-13 00:26:31,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:31" (1/1) ... [2021-10-13 00:26:31,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:31" (1/1) ... [2021-10-13 00:26:31,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:31" (1/1) ... [2021-10-13 00:26:31,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:31" (1/1) ... [2021-10-13 00:26:31,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:31" (1/1) ... [2021-10-13 00:26:31,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:31" (1/1) ... [2021-10-13 00:26:31,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:26:31,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:26:31,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:26:31,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:26:31,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:31" (1/1) ... [2021-10-13 00:26:31,287 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:31,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:31,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:31,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:26:31,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:26:31,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:26:31,557 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:26:31,558 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 00:26:31,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:26:31 BoogieIcfgContainer [2021-10-13 00:26:31,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:26:31,561 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:26:31,561 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:26:31,565 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:26:31,566 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:26:31,567 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:26:30" (1/3) ... [2021-10-13 00:26:31,568 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@62a3b68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:26:31, skipping insertion in model container [2021-10-13 00:26:31,569 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:26:31,569 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:26:31" (2/3) ... [2021-10-13 00:26:31,569 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@62a3b68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:26:31, skipping insertion in model container [2021-10-13 00:26:31,570 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:26:31,570 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:26:31" (3/3) ... [2021-10-13 00:26:31,572 INFO L389 chiAutomizerObserver]: Analyzing ICFG b.15.c [2021-10-13 00:26:31,628 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:26:31,628 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:26:31,628 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:26:31,628 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:26:31,628 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:26:31,628 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:26:31,629 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:26:31,629 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:26:31,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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) [2021-10-13 00:26:31,661 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-13 00:26:31,662 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:26:31,662 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:26:31,669 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:26:31,669 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-13 00:26:31,669 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:26:31,670 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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) [2021-10-13 00:26:31,671 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-10-13 00:26:31,671 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:26:31,671 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:26:31,672 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:26:31,672 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-10-13 00:26:31,680 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 8#L13-3true [2021-10-13 00:26:31,681 INFO L793 eck$LassoCheckResult]: Loop: 8#L13-3true assume !!(main_~x~0 == main_~y~0 && main_~x~0 > main_~z~0); 7#L13-2true assume !(main_~y~0 > main_~z~0); 8#L13-3true [2021-10-13 00:26:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:31,688 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-13 00:26:31,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:31,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110660389] [2021-10-13 00:26:31,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:31,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:31,790 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:26:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:31,811 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:26:31,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:31,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1288, now seen corresponding path program 1 times [2021-10-13 00:26:31,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:31,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713160237] [2021-10-13 00:26:31,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:31,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:26:31,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:26:31,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713160237] [2021-10-13 00:26:31,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713160237] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:26:31,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:26:31,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 00:26:31,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080542157] [2021-10-13 00:26:31,972 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:26:31,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:26:31,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:26:31,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:26:31,997 INFO L87 Difference]: Start difference. First operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2021-10-13 00:26:32,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:26:32,050 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-10-13 00:26:32,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:26:32,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2021-10-13 00:26:32,055 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 00:26:32,059 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 4 states and 5 transitions. [2021-10-13 00:26:32,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-10-13 00:26:32,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-10-13 00:26:32,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 5 transitions. [2021-10-13 00:26:32,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:26:32,076 INFO L681 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2021-10-13 00:26:32,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states and 5 transitions. [2021-10-13 00:26:32,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2021-10-13 00:26:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-10-13 00:26:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2021-10-13 00:26:32,139 INFO L704 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2021-10-13 00:26:32,139 INFO L587 BuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2021-10-13 00:26:32,140 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:26:32,140 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 5 transitions. [2021-10-13 00:26:32,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 00:26:32,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:26:32,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:26:32,141 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:26:32,142 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 00:26:32,142 INFO L791 eck$LassoCheckResult]: Stem: 24#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 25#L13-3 [2021-10-13 00:26:32,142 INFO L793 eck$LassoCheckResult]: Loop: 25#L13-3 assume !!(main_~x~0 == main_~y~0 && main_~x~0 > main_~z~0); 26#L13-2 assume !!(main_~y~0 > main_~z~0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 27#L13-2 assume !(main_~y~0 > main_~z~0); 25#L13-3 [2021-10-13 00:26:32,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:32,143 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-13 00:26:32,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:32,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103768098] [2021-10-13 00:26:32,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:32,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:32,163 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:26:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:32,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:26:32,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:32,170 INFO L82 PathProgramCache]: Analyzing trace with hash 40007, now seen corresponding path program 1 times [2021-10-13 00:26:32,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:32,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451038462] [2021-10-13 00:26:32,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:32,171 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:32,181 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:26:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:32,190 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:26:32,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:32,191 INFO L82 PathProgramCache]: Analyzing trace with hash 963528, now seen corresponding path program 1 times [2021-10-13 00:26:32,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:32,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532263331] [2021-10-13 00:26:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:32,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:32,204 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:26:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:32,216 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:26:32,306 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:26:32,307 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:26:32,307 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:26:32,307 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:26:32,308 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:26:32,308 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:32,308 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:26:32,308 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:26:32,308 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration2_Loop [2021-10-13 00:26:32,309 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:26:32,309 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:26:32,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:32,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:32,347 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:32,521 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:26:32,526 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:26:32,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:32,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:32,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:32,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:26:32,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:32,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 00:26:32,573 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:26:32,574 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:26:32,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:32,617 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:32,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:32,620 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:32,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:26:32,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:32,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 00:26:32,653 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:26:32,653 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:26:32,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:32,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:32,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:32,693 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:32,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:26:32,700 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:32,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 00:26:32,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:32,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:32,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:32,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:32,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:26:32,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:32,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 00:26:33,294 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:26:33,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:33,303 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:26:33,304 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:26:33,304 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:26:33,304 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:26:33,304 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:26:33,304 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:33,304 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:26:33,305 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:26:33,305 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration2_Loop [2021-10-13 00:26:33,305 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:26:33,305 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:26:33,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:33,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:33,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:33,458 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:26:33,465 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:26:33,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:33,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:33,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:33,474 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:26:33,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:26:33,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:26:33,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:26:33,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:26:33,498 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:26:33,498 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:26:33,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 00:26:33,517 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:26:33,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:33,561 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:33,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:33,563 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:33,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 00:26:33,574 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:26:33,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:26:33,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:26:33,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:26:33,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:26:33,591 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:26:33,591 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:26:33,613 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:26:33,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:33,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:33,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:33,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:33,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 00:26:33,661 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:26:33,672 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:26:33,673 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:26:33,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:26:33,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:26:33,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:26:33,677 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:26:33,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:26:33,689 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:26:33,698 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-13 00:26:33,698 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 00:26:33,700 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:33,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:33,705 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:33,730 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:26:33,730 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:26:33,730 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:26:33,731 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~x~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-10-13 00:26:33,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 00:26:33,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:33,780 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:26:33,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:33,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:26:33,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:26:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:33,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:26:33,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:26:33,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:26:34,031 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 [2021-10-13 00:26:34,033 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 4 states and 5 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.0) 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) [2021-10-13 00:26:34,079 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 4 states and 5 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 1.0) 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 12 states and 17 transitions. Complement of second has 6 states. [2021-10-13 00:26:34,080 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 [2021-10-13 00:26:34,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) 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) [2021-10-13 00:26:34,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-13 00:26:34,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 1 letters. Loop has 3 letters. [2021-10-13 00:26:34,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:26:34,083 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-13 00:26:34,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:26:34,084 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 1 letters. Loop has 6 letters. [2021-10-13 00:26:34,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:26:34,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2021-10-13 00:26:34,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 00:26:34,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 11 transitions. [2021-10-13 00:26:34,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-10-13 00:26:34,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-10-13 00:26:34,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-10-13 00:26:34,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:26:34,088 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-10-13 00:26:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-10-13 00:26:34,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-10-13 00:26:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) [2021-10-13 00:26:34,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-10-13 00:26:34,090 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-13 00:26:34,090 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-13 00:26:34,090 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 00:26:34,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-10-13 00:26:34,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 00:26:34,094 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:26:34,094 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:26:34,094 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2021-10-13 00:26:34,094 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 00:26:34,095 INFO L791 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~c~0, main_~x~0, main_~y~0, main_~z~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~c~0 := 0; 77#L13-3 assume !!(main_~x~0 == main_~y~0 && main_~x~0 > main_~z~0); 79#L13-2 assume !!(main_~y~0 > main_~z~0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 80#L13-2 assume !!(main_~y~0 > main_~z~0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 78#L13-2 [2021-10-13 00:26:34,095 INFO L793 eck$LassoCheckResult]: Loop: 78#L13-2 assume !!(main_~y~0 > main_~z~0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1; 78#L13-2 [2021-10-13 00:26:34,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:34,095 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 1 times [2021-10-13 00:26:34,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:34,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796544328] [2021-10-13 00:26:34,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:34,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:34,108 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:26:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:34,145 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:26:34,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:34,153 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2021-10-13 00:26:34,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:34,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181483040] [2021-10-13 00:26:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:34,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:34,161 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:26:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:34,172 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:26:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:34,173 INFO L82 PathProgramCache]: Analyzing trace with hash 29869449, now seen corresponding path program 2 times [2021-10-13 00:26:34,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:26:34,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760779222] [2021-10-13 00:26:34,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:26:34,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:26:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:34,201 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:26:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:26:34,225 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:26:34,247 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:26:34,247 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:26:34,247 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:26:34,247 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:26:34,247 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:26:34,247 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:34,247 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:26:34,248 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:26:34,248 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration3_Loop [2021-10-13 00:26:34,248 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:26:34,248 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:26:34,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:34,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:34,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:34,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:34,319 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:26:34,319 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:26:34,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:34,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:34,325 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:34,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:26:34,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:34,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 00:26:34,361 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:26:34,361 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: [] [2021-10-13 00:26:34,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:34,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:34,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:34,402 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:34,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:26:34,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:34,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 00:26:34,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:34,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:34,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:34,474 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:34,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:26:34,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:34,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-13 00:26:34,506 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:26:34,506 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0=1}, {ULTIMATE.start_main_~x~0=-2}, {ULTIMATE.start_main_~x~0=0}] Lambdas: [3, 1, 0] Nus: [1, 1] [2021-10-13 00:26:34,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-10-13 00:26:34,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:34,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:34,533 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:34,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:26:34,536 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:34,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-13 00:26:34,551 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:26:34,551 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: [] [2021-10-13 00:26:34,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:34,572 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:34,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:34,574 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:34,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-13 00:26:34,576 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:26:34,576 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:34,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:34,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:34,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:34,644 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:34,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:26:34,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:26:34,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-13 00:26:34,832 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:26:34,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:34,835 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:26:34,835 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:26:34,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:26:34,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:26:34,835 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:26:34,835 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:34,835 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:26:34,835 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:26:34,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.15.c_Iteration3_Loop [2021-10-13 00:26:34,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:26:34,836 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:26:34,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:34,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:34,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:34,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:26:34,895 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:26:34,896 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:26:34,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:34,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:34,897 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:34,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-13 00:26:34,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:26:34,922 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:26:34,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:26:34,922 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:26:34,922 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:26:34,928 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:26:34,928 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:26:34,945 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:26:34,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:34,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:34,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:34,972 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:34,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-13 00:26:34,976 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:26:34,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:26:34,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:26:34,983 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:26:34,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:26:34,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:26:34,984 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:26:34,984 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:26:34,986 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:26:35,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:35,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:35,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:35,010 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:35,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-13 00:26:35,013 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:26:35,021 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:26:35,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:26:35,021 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:26:35,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:26:35,024 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:26:35,024 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:26:35,060 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:26:35,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:35,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:35,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:35,099 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:35,105 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:26:35,114 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:26:35,115 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:26:35,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:26:35,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:26:35,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:26:35,116 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:26:35,116 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:26:35,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-13 00:26:35,132 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:26:35,136 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:26:35,136 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:26:35,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:26:35,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:26:35,138 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:26:35,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-13 00:26:35,140 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:26:35,140 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:26:35,140 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:26:35,141 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~y~0 - 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2021-10-13 00:26:35,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:35,162 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:26:35,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:26:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:35,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:26:35,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:26:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:26:35,242 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:26:35,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:26:35,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:26:35,244 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 [2021-10-13 00:26:35,245 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:35,261 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 15 transitions. Complement of second has 4 states. [2021-10-13 00:26:35,262 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 [2021-10-13 00:26:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:26:35,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-10-13 00:26:35,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 1 letters. [2021-10-13 00:26:35,263 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:26:35,264 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 1 letters. [2021-10-13 00:26:35,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:26:35,266 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2021-10-13 00:26:35,267 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:26:35,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 15 transitions. [2021-10-13 00:26:35,271 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:26:35,271 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2021-10-13 00:26:35,271 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 00:26:35,271 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 00:26:35,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 00:26:35,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:26:35,272 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:26:35,272 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:26:35,272 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:26:35,272 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 00:26:35,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:26:35,272 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:26:35,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 00:26:35,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 12:26:35 BoogieIcfgContainer [2021-10-13 00:26:35,280 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 00:26:35,280 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:26:35,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:26:35,281 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:26:35,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:26:31" (3/4) ... [2021-10-13 00:26:35,285 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:26:35,285 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:26:35,287 INFO L168 Benchmark]: Toolchain (without parser) took 4418.77 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 51.2 MB in the beginning and 52.7 MB in the end (delta: -1.5 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:35,288 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:35,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.08 ms. Allocated memory is still 92.3 MB. Free memory was 50.9 MB in the beginning and 69.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:35,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.65 ms. Allocated memory is still 92.3 MB. Free memory was 69.4 MB in the beginning and 68.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:35,298 INFO L168 Benchmark]: Boogie Preprocessor took 21.71 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 67.2 MB in the end (delta: 905.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:35,300 INFO L168 Benchmark]: RCFGBuilder took 286.74 ms. Allocated memory is still 92.3 MB. Free memory was 67.1 MB in the beginning and 59.5 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:35,300 INFO L168 Benchmark]: BuchiAutomizer took 3718.89 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 59.4 MB in the beginning and 52.7 MB in the end (delta: 6.7 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:26:35,301 INFO L168 Benchmark]: Witness Printer took 4.53 ms. Allocated memory is still 111.1 MB. Free memory is still 52.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:26:35,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.08 ms. Allocated memory is still 92.3 MB. Free memory was 50.9 MB in the beginning and 69.4 MB in the end (delta: -18.5 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.65 ms. Allocated memory is still 92.3 MB. Free memory was 69.4 MB in the beginning and 68.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.71 ms. Allocated memory is still 92.3 MB. Free memory was 68.1 MB in the beginning and 67.2 MB in the end (delta: 905.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 286.74 ms. Allocated memory is still 92.3 MB. Free memory was 67.1 MB in the beginning and 59.5 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3718.89 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 59.4 MB in the beginning and 52.7 MB in the end (delta: 6.7 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.53 ms. Allocated memory is still 111.1 MB. Free memory is still 52.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x + -1 * z and consists of 4 locations. One deterministic module has affine ranking function y + -1 * z and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 3.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 29.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 11 SDtfs, 6 SDslu, 3 SDs, 0 SdLazy, 18 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.8ms Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax168 hnf100 lsp50 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq168 hnf92 smp92 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 51ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-13 00:26:35,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:26:35,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c35e202a-cba0-4bbb-a839-5f09aae7622b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...