./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/afterrec-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/afterrec-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC --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 32bit --witnessprinter.graph.data.programhash 20d5e20d9a05badce6014033a9e9f921320cf457 ..................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:25:59,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:25:59,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:25:59,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:25:59,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:25:59,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:25:59,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:25:59,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:25:59,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:25:59,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:25:59,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:25:59,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:25:59,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:25:59,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:25:59,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:25:59,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:25:59,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:25:59,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:25:59,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:25:59,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:25:59,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:25:59,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:25:59,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:25:59,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:25:59,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:25:59,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:25:59,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:25:59,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:25:59,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:25:59,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:25:59,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:25:59,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:25:59,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:25:59,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:25:59,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:25:59,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:25:59,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:25:59,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:25:59,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:25:59,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:25:59,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:25:59,655 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-11 00:25:59,721 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:25:59,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:25:59,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:25:59,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:25:59,724 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:25:59,724 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-11 00:25:59,724 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-11 00:25:59,725 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-11 00:25:59,725 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-11 00:25:59,725 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-11 00:25:59,726 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-11 00:25:59,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:25:59,726 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:25:59,727 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-11 00:25:59,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:25:59,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:25:59,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:25:59,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-11 00:25:59,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-11 00:25:59,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-11 00:25:59,729 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:25:59,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:25:59,730 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-11 00:25:59,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:25:59,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-11 00:25:59,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:25:59,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:25:59,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:25:59,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:25:59,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:25:59,734 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-11 00:25:59,734 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_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20d5e20d9a05badce6014033a9e9f921320cf457 [2021-10-11 00:26:00,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:26:00,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:26:00,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:26:00,149 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:26:00,150 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:26:00,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/recursive-simple/afterrec-1.c [2021-10-11 00:26:00,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/data/ebaf75069/e51e9f69266346b9ab28fd2d30219ebd/FLAGabfc96933 [2021-10-11 00:26:00,793 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:26:00,794 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/sv-benchmarks/c/recursive-simple/afterrec-1.c [2021-10-11 00:26:00,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/data/ebaf75069/e51e9f69266346b9ab28fd2d30219ebd/FLAGabfc96933 [2021-10-11 00:26:01,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/data/ebaf75069/e51e9f69266346b9ab28fd2d30219ebd [2021-10-11 00:26:01,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:26:01,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:26:01,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:01,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:26:01,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:26:01,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:01" (1/1) ... [2021-10-11 00:26:01,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4341d49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01, skipping insertion in model container [2021-10-11 00:26:01,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:01" (1/1) ... [2021-10-11 00:26:01,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:26:01,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:26:01,385 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/sv-benchmarks/c/recursive-simple/afterrec-1.c[318,331] [2021-10-11 00:26:01,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:01,408 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:26:01,427 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/sv-benchmarks/c/recursive-simple/afterrec-1.c[318,331] [2021-10-11 00:26:01,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:01,449 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:26:01,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01 WrapperNode [2021-10-11 00:26:01,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:01,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:01,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:26:01,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:26:01,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01" (1/1) ... [2021-10-11 00:26:01,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01" (1/1) ... [2021-10-11 00:26:01,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:01,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:26:01,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:26:01,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:26:01,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01" (1/1) ... [2021-10-11 00:26:01,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01" (1/1) ... [2021-10-11 00:26:01,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01" (1/1) ... [2021-10-11 00:26:01,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01" (1/1) ... [2021-10-11 00:26:01,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01" (1/1) ... [2021-10-11 00:26:01,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01" (1/1) ... [2021-10-11 00:26:01,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01" (1/1) ... [2021-10-11 00:26:01,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:26:01,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:26:01,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:26:01,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:26:01,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:01,678 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-10-11 00:26:01,679 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-10-11 00:26:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:26:01,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:26:01,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:26:01,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:26:01,957 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:26:01,965 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-11 00:26:01,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:01 BoogieIcfgContainer [2021-10-11 00:26:01,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:26:01,969 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-11 00:26:01,969 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-11 00:26:01,988 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-11 00:26:01,989 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:26:01,989 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 11.10 12:26:01" (1/3) ... [2021-10-11 00:26:01,994 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ece3994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:26:01, skipping insertion in model container [2021-10-11 00:26:01,994 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:26:01,994 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:01" (2/3) ... [2021-10-11 00:26:01,995 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ece3994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 11.10 12:26:01, skipping insertion in model container [2021-10-11 00:26:01,995 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-11 00:26:01,995 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:01" (3/3) ... [2021-10-11 00:26:01,997 INFO L389 chiAutomizerObserver]: Analyzing ICFG afterrec-1.c [2021-10-11 00:26:02,088 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-11 00:26:02,088 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-11 00:26:02,088 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-11 00:26:02,089 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:26:02,089 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:26:02,089 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-11 00:26:02,089 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:26:02,089 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-11 00:26:02,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2021-10-11 00:26:02,121 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:26:02,139 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:26:02,139 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:26:02,146 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-11 00:26:02,146 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-11 00:26:02,146 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-11 00:26:02,147 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2021-10-11 00:26:02,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-11 00:26:02,148 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-11 00:26:02,148 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-11 00:26:02,149 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-11 00:26:02,149 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-11 00:26:02,156 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(13);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3#L-1true havoc main_#res; 10#L13true call f(4);< 5#fENTRYtrue [2021-10-11 00:26:02,156 INFO L796 eck$LassoCheckResult]: Loop: 5#fENTRYtrue ~n := #in~n; 14#L6true assume !(~n < 3);#t~post7 := ~n;~n := #t~post7 - 1;havoc #t~post7; 9#L8true call f(~n);< 5#fENTRYtrue [2021-10-11 00:26:02,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:02,162 INFO L82 PathProgramCache]: Analyzing trace with hash 38799, now seen corresponding path program 1 times [2021-10-11 00:26:02,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:02,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337606219] [2021-10-11 00:26:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:02,257 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:02,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:02,292 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:26:02,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:02,294 INFO L82 PathProgramCache]: Analyzing trace with hash 29931, now seen corresponding path program 1 times [2021-10-11 00:26:02,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:02,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790721573] [2021-10-11 00:26:02,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:02,302 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:02,306 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:02,308 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:26:02,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:02,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1155861149, now seen corresponding path program 1 times [2021-10-11 00:26:02,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:02,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346599669] [2021-10-11 00:26:02,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:02,344 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:02,370 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:02,377 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:26:02,456 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:26:02,457 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:26:02,457 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:26:02,457 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:26:02,458 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-11 00:26:02,458 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:02,458 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:26:02,458 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:26:02,458 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec-1.c_Iteration1_Loop [2021-10-11 00:26:02,458 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:26:02,459 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:26:02,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:02,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:02,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:02,541 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:26:02,542 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:02,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:26:02,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:26:02,573 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-11 00:26:02,573 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f_#t~post7=0} Honda state: {f_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:02,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-11 00:26:02,594 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:02,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-11 00:26:02,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-11 00:26:02,691 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-11 00:26:02,692 INFO L210 LassoAnalysis]: Preferences: [2021-10-11 00:26:02,692 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-11 00:26:02,692 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-11 00:26:02,693 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-11 00:26:02,693 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-11 00:26:02,693 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:02,693 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-11 00:26:02,693 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-11 00:26:02,693 INFO L133 ssoRankerPreferences]: Filename of dumped script: afterrec-1.c_Iteration1_Loop [2021-10-11 00:26:02,693 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-11 00:26:02,693 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2021-10-11 00:26:02,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:02,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:02,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-11 00:26:02,739 INFO L292 LassoAnalysis]: Preprocessing complete. [2021-10-11 00:26:02,744 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:02,756 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:26:02,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:26:02,758 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:26:02,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:26:02,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:26:02,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:26:02,762 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:26:02,762 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-11 00:26:02,776 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:26:02,816 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:26:02,817 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:26:02,818 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:26:02,818 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:26:02,818 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:26:02,818 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:26:02,819 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:26:02,820 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:02,843 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-11 00:26:02,885 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2021-10-11 00:26:02,886 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-11 00:26:02,886 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-11 00:26:02,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-11 00:26:02,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-11 00:26:02,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-11 00:26:02,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-11 00:26:02,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:02,907 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-11 00:26:02,916 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-11 00:26:02,916 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cd8ba92-a8f6-4a88-b987-454ac8825832/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-11 00:26:02,927 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-11 00:26:02,928 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-11 00:26:02,928 INFO L510 LassoAnalysis]: Proved termination. [2021-10-11 00:26:02,928 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(f_#in~n) = 1*f_#in~n Supporting invariants [] [2021-10-11 00:26:02,949 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-11 00:26:02,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:02,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 00:26:02,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:03,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:26:03,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:03,108 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-11 00:26:03,109 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states. Second operand 4 states. [2021-10-11 00:26:03,199 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states.. Second operand 4 states. Result 37 states and 39 transitions. Complement of second has 19 states. [2021-10-11 00:26:03,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-10-11 00:26:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-11 00:26:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 16 transitions. [2021-10-11 00:26:03,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 3 letters. Loop has 3 letters. [2021-10-11 00:26:03,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:26:03,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 6 letters. Loop has 3 letters. [2021-10-11 00:26:03,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:26:03,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 16 transitions. Stem has 3 letters. Loop has 6 letters. [2021-10-11 00:26:03,206 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-11 00:26:03,207 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 39 transitions. [2021-10-11 00:26:03,210 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:26:03,213 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 0 states and 0 transitions. [2021-10-11 00:26:03,214 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-11 00:26:03,214 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-11 00:26:03,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-11 00:26:03,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-11 00:26:03,215 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:26:03,215 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:26:03,215 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 00:26:03,215 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-11 00:26:03,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-11 00:26:03,215 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-11 00:26:03,216 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-11 00:26:03,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 11.10 12:26:03 BoogieIcfgContainer [2021-10-11 00:26:03,221 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-11 00:26:03,221 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:26:03,221 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:26:03,222 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:26:03,222 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:01" (3/4) ... [2021-10-11 00:26:03,225 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 00:26:03,225 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:26:03,227 INFO L168 Benchmark]: Toolchain (without parser) took 2084.65 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 59.6 MB in the beginning and 69.1 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:03,228 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 92.3 MB. Free memory was 47.9 MB in the beginning and 47.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:03,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.88 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 59.4 MB in the beginning and 87.8 MB in the end (delta: -28.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:03,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.65 ms. Allocated memory is still 111.1 MB. Free memory was 87.8 MB in the beginning and 86.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:03,230 INFO L168 Benchmark]: Boogie Preprocessor took 45.02 ms. Allocated memory is still 111.1 MB. Free memory was 86.5 MB in the beginning and 85.7 MB in the end (delta: 758.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:03,231 INFO L168 Benchmark]: RCFGBuilder took 414.69 ms. Allocated memory is still 111.1 MB. Free memory was 85.7 MB in the beginning and 75.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:03,231 INFO L168 Benchmark]: BuchiAutomizer took 1252.20 ms. Allocated memory is still 111.1 MB. Free memory was 75.3 MB in the beginning and 69.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:03,232 INFO L168 Benchmark]: Witness Printer took 3.76 ms. Allocated memory is still 111.1 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:03,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 92.3 MB. Free memory was 47.9 MB in the beginning and 47.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.88 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 59.4 MB in the beginning and 87.8 MB in the end (delta: -28.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.65 ms. Allocated memory is still 111.1 MB. Free memory was 87.8 MB in the beginning and 86.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.02 ms. Allocated memory is still 111.1 MB. Free memory was 86.5 MB in the beginning and 85.7 MB in the end (delta: 758.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 414.69 ms. Allocated memory is still 111.1 MB. Free memory was 85.7 MB in the beginning and 75.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1252.20 ms. Allocated memory is still 111.1 MB. Free memory was 75.3 MB in the beginning and 69.7 MB in the end (delta: 5.6 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.76 ms. Allocated memory is still 111.1 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 5 SDtfs, 7 SDslu, 2 SDs, 0 SdLazy, 16 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...