./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/c.01_assume.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/c.01_assume.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f716f85b4674adf32c5382ff55713973e95460ac3d0ffe3bfad3cafce9960ed4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:06:35,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:06:35,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:06:35,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:06:35,826 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:06:35,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:06:35,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:06:35,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:06:35,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:06:35,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:06:35,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:06:35,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:06:35,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:06:35,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:06:35,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:06:35,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:06:35,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:06:35,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:06:35,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:06:35,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:06:35,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:06:35,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:06:35,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:06:35,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:06:35,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:06:35,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:06:35,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:06:35,863 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:06:35,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:06:35,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:06:35,871 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:06:35,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:06:35,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:06:35,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:06:35,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:06:35,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:06:35,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:06:35,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:06:35,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:06:35,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:06:35,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:06:35,878 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-06 20:06:35,902 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:06:35,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:06:35,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:06:35,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:06:35,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:06:35,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:06:35,904 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:06:35,904 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-06 20:06:35,904 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-06 20:06:35,904 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-06 20:06:35,904 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-06 20:06:35,904 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-06 20:06:35,904 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-06 20:06:35,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:06:35,905 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 20:06:35,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:06:35,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:06:35,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-06 20:06:35,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-06 20:06:35,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-06 20:06:35,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:06:35,905 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-06 20:06:35,905 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:06:35,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-06 20:06:35,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:06:35,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:06:35,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:06:35,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:06:35,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:06:35,907 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-06 20:06:35,907 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_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f716f85b4674adf32c5382ff55713973e95460ac3d0ffe3bfad3cafce9960ed4 [2021-12-06 20:06:36,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:06:36,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:06:36,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:06:36,090 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:06:36,090 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:06:36,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-restricted-15/c.01_assume.c [2021-12-06 20:06:36,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/data/e7e23dc85/85e8c7bdb5274f54976d710a3e982a5f/FLAG5bfe89171 [2021-12-06 20:06:36,507 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:06:36,508 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/sv-benchmarks/c/termination-restricted-15/c.01_assume.c [2021-12-06 20:06:36,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/data/e7e23dc85/85e8c7bdb5274f54976d710a3e982a5f/FLAG5bfe89171 [2021-12-06 20:06:36,522 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/data/e7e23dc85/85e8c7bdb5274f54976d710a3e982a5f [2021-12-06 20:06:36,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:06:36,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:06:36,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:06:36,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:06:36,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:06:36,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:06:36" (1/1) ... [2021-12-06 20:06:36,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dc5f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36, skipping insertion in model container [2021-12-06 20:06:36,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:06:36" (1/1) ... [2021-12-06 20:06:36,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:06:36,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:06:36,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:06:36,638 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:06:36,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:06:36,656 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:06:36,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36 WrapperNode [2021-12-06 20:06:36,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:06:36,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:06:36,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:06:36,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:06:36,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36" (1/1) ... [2021-12-06 20:06:36,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36" (1/1) ... [2021-12-06 20:06:36,678 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2021-12-06 20:06:36,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:06:36,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:06:36,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:06:36,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:06:36,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36" (1/1) ... [2021-12-06 20:06:36,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36" (1/1) ... [2021-12-06 20:06:36,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36" (1/1) ... [2021-12-06 20:06:36,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36" (1/1) ... [2021-12-06 20:06:36,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36" (1/1) ... [2021-12-06 20:06:36,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36" (1/1) ... [2021-12-06 20:06:36,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36" (1/1) ... [2021-12-06 20:06:36,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:06:36,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:06:36,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:06:36,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:06:36,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36" (1/1) ... [2021-12-06 20:06:36,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:36,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:36,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:36,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-06 20:06:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:06:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:06:36,790 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:06:36,792 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:06:36,840 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:06:36,845 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:06:36,845 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 20:06:36,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:06:36 BoogieIcfgContainer [2021-12-06 20:06:36,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:06:36,848 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-06 20:06:36,848 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-06 20:06:36,851 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-06 20:06:36,852 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 20:06:36,852 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.12 08:06:36" (1/3) ... [2021-12-06 20:06:36,853 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77ee8e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 08:06:36, skipping insertion in model container [2021-12-06 20:06:36,853 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 20:06:36,854 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:06:36" (2/3) ... [2021-12-06 20:06:36,854 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77ee8e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.12 08:06:36, skipping insertion in model container [2021-12-06 20:06:36,854 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-06 20:06:36,854 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:06:36" (3/3) ... [2021-12-06 20:06:36,856 INFO L388 chiAutomizerObserver]: Analyzing ICFG c.01_assume.c [2021-12-06 20:06:36,900 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-06 20:06:36,901 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-06 20:06:36,901 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-06 20:06:36,901 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-06 20:06:36,901 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-06 20:06:36,901 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-06 20:06:36,901 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-06 20:06:36,901 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-06 20:06:36,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:36,931 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 20:06:36,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:06:36,932 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:06:36,937 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 20:06:36,937 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 20:06:36,937 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-06 20:06:36,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:36,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-06 20:06:36,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:06:36,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:06:36,940 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-06 20:06:36,940 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-06 20:06:36,946 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 6#L9-2true [2021-12-06 20:06:36,946 INFO L793 eck$LassoCheckResult]: Loop: 6#L9-2true assume !!(main_~x~0#1 >= 0 && main_~y~0#1 > 0);main_~y~0#1 := 1; 10#L11-2true assume !((main_~x~0#1 > main_~y~0#1 && main_~y~0#1 > 0) && main_~y~0#1 < 1073741824); 9#L11-3true main_~x~0#1 := main_~x~0#1 - 1; 6#L9-2true [2021-12-06 20:06:36,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-06 20:06:36,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:36,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775507327] [2021-12-06 20:06:36,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:36,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:37,040 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:06:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:37,056 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:06:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:37,060 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2021-12-06 20:06:37,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:37,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753114266] [2021-12-06 20:06:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:37,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:37,076 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:06:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:37,083 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:06:37,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:37,086 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2021-12-06 20:06:37,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:37,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949167545] [2021-12-06 20:06:37,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:37,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:37,095 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:06:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:37,102 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:06:37,190 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:06:37,191 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:06:37,191 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:06:37,191 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:06:37,191 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:06:37,192 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,192 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:06:37,192 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:06:37,192 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration1_Loop [2021-12-06 20:06:37,192 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:06:37,192 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:06:37,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:37,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:37,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:37,291 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:06:37,292 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:06:37,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:37,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:37,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-06 20:06:37,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:06:37,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:06:37,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:06:37,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:37,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:37,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-06 20:06:37,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:06:37,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:06:37,375 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:06:37,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-06 20:06:37,378 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:06:37,378 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:06:37,378 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:06:37,378 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:06:37,378 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:06:37,378 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,378 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:06:37,378 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:06:37,378 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration1_Loop [2021-12-06 20:06:37,379 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:06:37,379 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:06:37,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:37,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:37,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:37,425 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:06:37,428 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:06:37,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:37,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:37,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-06 20:06:37,431 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:06:37,441 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:06:37,441 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:06:37,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:06:37,442 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:06:37,442 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:06:37,445 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:06:37,445 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:06:37,448 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:06:37,456 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 20:06:37,456 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 20:06:37,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:37,458 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:37,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-06 20:06:37,496 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:06:37,496 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:06:37,496 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:06:37,497 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [] [2021-12-06 20:06:37,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-06 20:06:37,517 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:06:37,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:37,541 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:06:37,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:37,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 20:06:37,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:37,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:06:37,605 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-06 20:06:37,606 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:37,641 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 36 transitions. Complement of second has 7 states. [2021-12-06 20:06:37,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-06 20:06:37,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:37,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-12-06 20:06:37,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-06 20:06:37,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:06:37,650 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-06 20:06:37,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:06:37,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-06 20:06:37,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:06:37,652 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2021-12-06 20:06:37,654 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 20:06:37,657 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2021-12-06 20:06:37,658 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-12-06 20:06:37,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-12-06 20:06:37,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-12-06 20:06:37,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 20:06:37,659 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-12-06 20:06:37,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-12-06 20:06:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-12-06 20:06:37,682 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) [2021-12-06 20:06:37,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-12-06 20:06:37,683 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-12-06 20:06:37,683 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-12-06 20:06:37,684 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-06 20:06:37,684 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-12-06 20:06:37,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 20:06:37,684 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:06:37,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:06:37,685 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-06 20:06:37,685 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-06 20:06:37,685 INFO L791 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 76#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 77#L9-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 > 0);main_~y~0#1 := 1; 79#L11-2 [2021-12-06 20:06:37,685 INFO L793 eck$LassoCheckResult]: Loop: 79#L11-2 assume !!((main_~x~0#1 > main_~y~0#1 && main_~y~0#1 > 0) && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 79#L11-2 [2021-12-06 20:06:37,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:37,686 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-06 20:06:37,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:37,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987420876] [2021-12-06 20:06:37,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:37,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:37,691 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:06:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:37,694 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:06:37,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:37,695 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2021-12-06 20:06:37,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:37,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984444174] [2021-12-06 20:06:37,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:37,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:37,700 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:06:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:37,704 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:06:37,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:37,705 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2021-12-06 20:06:37,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:37,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533768477] [2021-12-06 20:06:37,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:37,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:37,711 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:06:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:37,716 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:06:37,734 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:06:37,734 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:06:37,734 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:06:37,734 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:06:37,734 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:06:37,735 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,735 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:06:37,735 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:06:37,735 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration2_Loop [2021-12-06 20:06:37,735 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:06:37,735 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:06:37,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:37,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:37,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:37,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-12-06 20:06:37,777 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:06:37,777 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:06:37,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:37,778 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:37,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-06 20:06:37,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:06:37,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:06:37,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:06:37,796 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 20:06:37,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-06 20:06:37,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:37,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:37,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-06 20:06:37,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:06:37,829 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:06:37,841 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:06:37,842 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 20:06:37,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-06 20:06:37,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:37,869 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:37,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-06 20:06:37,870 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:06:37,870 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:06:37,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-06 20:06:37,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:37,898 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:37,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-06 20:06:37,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:06:37,899 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:06:37,931 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:06:37,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-06 20:06:37,933 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:06:37,933 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:06:37,933 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:06:37,933 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:06:37,933 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:06:37,933 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,933 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:06:37,933 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:06:37,933 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration2_Loop [2021-12-06 20:06:37,934 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:06:37,934 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:06:37,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:37,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:37,938 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:37,961 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:06:37,961 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:06:37,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:37,962 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:37,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-06 20:06:37,963 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:06:37,969 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:06:37,969 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:06:37,969 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:06:37,970 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:06:37,972 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:06:37,972 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:06:37,975 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:06:37,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-06 20:06:37,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:37,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:37,994 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:37,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-06 20:06:37,995 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:06:38,002 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:06:38,002 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:06:38,002 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:06:38,002 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:06:38,005 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-06 20:06:38,005 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-06 20:06:38,008 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-06 20:06:38,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2021-12-06 20:06:38,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:38,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:38,028 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:38,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-06 20:06:38,029 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:06:38,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:06:38,036 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:06:38,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:06:38,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:06:38,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:06:38,038 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:06:38,038 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:06:38,040 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:06:38,043 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 20:06:38,043 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 20:06:38,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:38,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:38,044 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:38,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-06 20:06:38,045 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:06:38,045 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:06:38,045 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:06:38,045 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = -2*ULTIMATE.start_main_~y~0#1 + 2147483647 Supporting invariants [] [2021-12-06 20:06:38,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-12-06 20:06:38,063 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:06:38,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:38,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:06:38,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:38,080 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:06:38,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:06:38,081 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-06 20:06:38,081 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 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:38,090 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 2.0) internal successors, (4), 2 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 14 states and 19 transitions. Complement of second has 5 states. [2021-12-06 20:06:38,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-06 20:06:38,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:38,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-06 20:06:38,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2021-12-06 20:06:38,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:06:38,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2021-12-06 20:06:38,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:06:38,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2021-12-06 20:06:38,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:06:38,092 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2021-12-06 20:06:38,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 20:06:38,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2021-12-06 20:06:38,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-12-06 20:06:38,093 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-12-06 20:06:38,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2021-12-06 20:06:38,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-06 20:06:38,094 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2021-12-06 20:06:38,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2021-12-06 20:06:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2021-12-06 20:06:38,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:38,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-12-06 20:06:38,095 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-12-06 20:06:38,095 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-12-06 20:06:38,095 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-06 20:06:38,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2021-12-06 20:06:38,095 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-12-06 20:06:38,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-06 20:06:38,096 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-06 20:06:38,096 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2021-12-06 20:06:38,096 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-12-06 20:06:38,096 INFO L791 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 129#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 130#L9-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 > 0);main_~y~0#1 := 1; 131#L11-2 assume !((main_~x~0#1 > main_~y~0#1 && main_~y~0#1 > 0) && main_~y~0#1 < 1073741824); 134#L11-3 main_~x~0#1 := main_~x~0#1 - 1; 132#L9-2 assume !!(main_~x~0#1 >= 0 && main_~y~0#1 > 0);main_~y~0#1 := 1; 133#L11-2 [2021-12-06 20:06:38,096 INFO L793 eck$LassoCheckResult]: Loop: 133#L11-2 assume !!((main_~x~0#1 > main_~y~0#1 && main_~y~0#1 > 0) && main_~y~0#1 < 1073741824);main_~y~0#1 := 2 * main_~y~0#1; 133#L11-2 [2021-12-06 20:06:38,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:38,097 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2021-12-06 20:06:38,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:38,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707635133] [2021-12-06 20:06:38,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:38,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:38,103 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:06:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:38,109 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:06:38,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2021-12-06 20:06:38,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:38,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021347461] [2021-12-06 20:06:38,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:38,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:38,114 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:06:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:06:38,118 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:06:38,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:38,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1810787031, now seen corresponding path program 1 times [2021-12-06 20:06:38,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:06:38,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634467042] [2021-12-06 20:06:38,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:38,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:06:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:38,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:06:38,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:06:38,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634467042] [2021-12-06 20:06:38,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634467042] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:06:38,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372443064] [2021-12-06 20:06:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:06:38,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:06:38,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:38,172 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:06:38,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 20:06:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:38,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:06:38,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:06:38,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:06:38,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:06:38,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372443064] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:06:38,324 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:06:38,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-12-06 20:06:38,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411087478] [2021-12-06 20:06:38,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:06:38,340 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:06:38,340 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:06:38,340 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:06:38,340 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:06:38,340 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-06 20:06:38,340 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:38,340 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:06:38,341 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:06:38,341 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration3_Loop [2021-12-06 20:06:38,341 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:06:38,341 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:06:38,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:38,343 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:38,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:38,375 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:06:38,375 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-06 20:06:38,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:38,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:38,377 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:38,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-06 20:06:38,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:06:38,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:06:38,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-12-06 20:06:38,399 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-06 20:06:38,399 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-06 20:06:38,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-06 20:06:38,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:38,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:38,418 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:38,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-06 20:06:38,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-06 20:06:38,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:06:38,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-06 20:06:38,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:38,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:38,446 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:38,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-06 20:06:38,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-06 20:06:38,447 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-06 20:06:38,478 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-06 20:06:38,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-06 20:06:38,480 INFO L210 LassoAnalysis]: Preferences: [2021-12-06 20:06:38,480 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-06 20:06:38,480 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-06 20:06:38,480 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-06 20:06:38,480 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-06 20:06:38,480 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:38,480 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-06 20:06:38,480 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-06 20:06:38,480 INFO L133 ssoRankerPreferences]: Filename of dumped script: c.01_assume.c_Iteration3_Loop [2021-12-06 20:06:38,480 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-06 20:06:38,480 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-06 20:06:38,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:38,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:38,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-06 20:06:38,509 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-06 20:06:38,509 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-06 20:06:38,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:38,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:38,510 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:38,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-06 20:06:38,520 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-06 20:06:38,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-06 20:06:38,529 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-06 20:06:38,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-06 20:06:38,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-06 20:06:38,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-06 20:06:38,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-06 20:06:38,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-06 20:06:38,532 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-06 20:06:38,535 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-06 20:06:38,535 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-06 20:06:38,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-06 20:06:38,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:06:38,536 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-06 20:06:38,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-06 20:06:38,540 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-06 20:06:38,540 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-06 20:06:38,540 INFO L513 LassoAnalysis]: Proved termination. [2021-12-06 20:06:38,540 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = -2*ULTIMATE.start_main_~y~0#1 + 2147483647 Supporting invariants [] [2021-12-06 20:06:38,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-12-06 20:06:38,559 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-06 20:06:38,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:38,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:06:38,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:38,577 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:06:38,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:06:38,578 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-06 20:06:38,578 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:38,584 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 16 transitions. Complement of second has 5 states. [2021-12-06 20:06:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-06 20:06:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-06 20:06:38,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2021-12-06 20:06:38,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:06:38,586 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 20:06:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:38,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:06:38,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:38,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:38,603 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:06:38,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:38,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:06:38,603 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-06 20:06:38,603 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:38,608 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 12 states and 16 transitions. Complement of second has 5 states. [2021-12-06 20:06:38,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-06 20:06:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:38,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-06 20:06:38,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 1 letters. [2021-12-06 20:06:38,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:06:38,609 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-06 20:06:38,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:06:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:38,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:06:38,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:06:38,627 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:06:38,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:06:38,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:06:38,627 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-12-06 20:06:38,627 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:38,634 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 12 transitions. Complement of second has 4 states. [2021-12-06 20:06:38,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-06 20:06:38,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:38,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-12-06 20:06:38,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 1 letters. [2021-12-06 20:06:38,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:06:38,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2021-12-06 20:06:38,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:06:38,635 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 2 letters. [2021-12-06 20:06:38,635 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-06 20:06:38,635 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2021-12-06 20:06:38,636 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 20:06:38,636 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2021-12-06 20:06:38,636 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 20:06:38,636 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 20:06:38,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 20:06:38,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:06:38,636 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:06:38,636 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:06:38,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:06:38,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:06:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:06:38,639 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:06:38,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:06:38,641 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-12-06 20:06:38,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:06:38,641 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-12-06 20:06:38,641 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 20:06:38,641 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 20:06:38,641 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-06 20:06:38,642 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-06 20:06:38,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-06 20:06:38,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 20:06:38,642 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:06:38,642 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:06:38,642 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 20:06:38,642 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-06 20:06:38,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-06 20:06:38,642 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-06 20:06:38,642 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-06 20:06:38,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.12 08:06:38 BoogieIcfgContainer [2021-12-06 20:06:38,647 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-06 20:06:38,647 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 20:06:38,647 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 20:06:38,647 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 20:06:38,648 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:06:36" (3/4) ... [2021-12-06 20:06:38,649 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 20:06:38,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 20:06:38,650 INFO L158 Benchmark]: Toolchain (without parser) took 2125.57ms. Allocated memory is still 113.2MB. Free memory was 89.4MB in the beginning and 69.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.6MB. Max. memory is 16.1GB. [2021-12-06 20:06:38,650 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 75.5MB. Free memory is still 44.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:06:38,651 INFO L158 Benchmark]: CACSL2BoogieTranslator took 131.67ms. Allocated memory is still 113.2MB. Free memory was 89.2MB in the beginning and 80.5MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 20:06:38,651 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.72ms. Allocated memory is still 113.2MB. Free memory was 80.5MB in the beginning and 79.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:06:38,651 INFO L158 Benchmark]: Boogie Preprocessor took 12.55ms. Allocated memory is still 113.2MB. Free memory was 79.2MB in the beginning and 78.3MB in the end (delta: 866.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 20:06:38,652 INFO L158 Benchmark]: RCFGBuilder took 155.23ms. Allocated memory is still 113.2MB. Free memory was 78.2MB in the beginning and 70.3MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 20:06:38,652 INFO L158 Benchmark]: BuchiAutomizer took 1799.03ms. Allocated memory is still 113.2MB. Free memory was 70.2MB in the beginning and 70.1MB in the end (delta: 68.0kB). Peak memory consumption was 584.8kB. Max. memory is 16.1GB. [2021-12-06 20:06:38,653 INFO L158 Benchmark]: Witness Printer took 2.45ms. Allocated memory is still 113.2MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:06:38,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 75.5MB. Free memory is still 44.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 131.67ms. Allocated memory is still 113.2MB. Free memory was 89.2MB in the beginning and 80.5MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.72ms. Allocated memory is still 113.2MB. Free memory was 80.5MB in the beginning and 79.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.55ms. Allocated memory is still 113.2MB. Free memory was 79.2MB in the beginning and 78.3MB in the end (delta: 866.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 155.23ms. Allocated memory is still 113.2MB. Free memory was 78.2MB in the beginning and 70.3MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1799.03ms. Allocated memory is still 113.2MB. Free memory was 70.2MB in the beginning and 70.1MB in the end (delta: 68.0kB). Peak memory consumption was 584.8kB. Max. memory is 16.1GB. * Witness Printer took 2.45ms. Allocated memory is still 113.2MB. Free memory is still 69.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function 2147483647 + -2 * y and consists of 3 locations. One nondeterministic module has affine ranking function 2147483647 + -2 * y and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 33 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 24 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax171 hnf100 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq142 hnf94 smp100 dnf100 smp100 tf108 neg100 sie119 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-06 20:06:38,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-12-06 20:06:38,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 20:06:39,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d6f2651-d471-4519-811f-d087a51ceeac/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE