./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/2Nested-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/2Nested-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer --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 e73aa59ec9606428c1e0dd19193fa59dbe50e869 .......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:29:36,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:29:36,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:29:36,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:29:36,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:29:36,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:29:36,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:29:36,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:29:36,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:29:36,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:29:36,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:29:36,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:29:36,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:29:36,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:29:36,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:29:36,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:29:36,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:29:36,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:29:36,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:29:36,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:29:36,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:29:36,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:29:36,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:29:36,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:29:36,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:29:36,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:29:36,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:29:36,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:29:36,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:29:36,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:29:36,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:29:36,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:29:36,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:29:36,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:29:36,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:29:36,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:29:36,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:29:36,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:29:36,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:29:36,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:29:36,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:29:36,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-12-01 15:29:36,832 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:29:36,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:29:36,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:29:36,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:29:36,838 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:29:36,838 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-12-01 15:29:36,839 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-12-01 15:29:36,839 INFO L138 SettingsManager]: * Use old map elimination=false [2020-12-01 15:29:36,839 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-12-01 15:29:36,840 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-12-01 15:29:36,841 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-12-01 15:29:36,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:29:36,843 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 15:29:36,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:29:36,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:29:36,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-12-01 15:29:36,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-12-01 15:29:36,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-12-01 15:29:36,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:29:36,847 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-12-01 15:29:36,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:29:36,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-12-01 15:29:36,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:29:36,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:29:36,849 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-12-01 15:29:36,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:29:36,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:29:36,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:29:36,850 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-12-01 15:29:36,856 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-12-01 15:29:36,857 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-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e73aa59ec9606428c1e0dd19193fa59dbe50e869 [2020-12-01 15:29:37,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:29:37,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:29:37,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:29:37,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:29:37,312 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:29:37,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/2Nested-1.c [2020-12-01 15:29:37,417 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/data/b66133f6a/70519c0ded9942fba62432070c005082/FLAG6277b9035 [2020-12-01 15:29:38,083 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:29:38,084 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/sv-benchmarks/c/termination-crafted/2Nested-1.c [2020-12-01 15:29:38,097 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/data/b66133f6a/70519c0ded9942fba62432070c005082/FLAG6277b9035 [2020-12-01 15:29:38,432 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/data/b66133f6a/70519c0ded9942fba62432070c005082 [2020-12-01 15:29:38,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:29:38,441 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:29:38,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:29:38,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:29:38,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:29:38,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:29:38" (1/1) ... [2020-12-01 15:29:38,457 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28e5f5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38, skipping insertion in model container [2020-12-01 15:29:38,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:29:38" (1/1) ... [2020-12-01 15:29:38,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:29:38,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:29:38,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:29:38,698 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:29:38,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:29:38,758 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:29:38,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38 WrapperNode [2020-12-01 15:29:38,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:29:38,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:29:38,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:29:38,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:29:38,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38" (1/1) ... [2020-12-01 15:29:38,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38" (1/1) ... [2020-12-01 15:29:38,808 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:29:38,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:29:38,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:29:38,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:29:38,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38" (1/1) ... [2020-12-01 15:29:38,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38" (1/1) ... [2020-12-01 15:29:38,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38" (1/1) ... [2020-12-01 15:29:38,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38" (1/1) ... [2020-12-01 15:29:38,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38" (1/1) ... [2020-12-01 15:29:38,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38" (1/1) ... [2020-12-01 15:29:38,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38" (1/1) ... [2020-12-01 15:29:38,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:29:38,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:29:38,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:29:38,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:29:38,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/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 [2020-12-01 15:29:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:29:38,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:29:39,222 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:29:39,222 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-12-01 15:29:39,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:29:39 BoogieIcfgContainer [2020-12-01 15:29:39,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:29:39,226 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-12-01 15:29:39,227 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-12-01 15:29:39,233 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-12-01 15:29:39,234 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:29:39,234 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 03:29:38" (1/3) ... [2020-12-01 15:29:39,237 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77ae4207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 03:29:39, skipping insertion in model container [2020-12-01 15:29:39,237 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:29:39,237 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:29:38" (2/3) ... [2020-12-01 15:29:39,238 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@77ae4207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 03:29:39, skipping insertion in model container [2020-12-01 15:29:39,238 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 15:29:39,239 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:29:39" (3/3) ... [2020-12-01 15:29:39,240 INFO L389 chiAutomizerObserver]: Analyzing ICFG 2Nested-1.c [2020-12-01 15:29:39,349 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-12-01 15:29:39,350 INFO L360 BuchiCegarLoop]: Hoare is false [2020-12-01 15:29:39,350 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-12-01 15:29:39,350 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:29:39,350 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:29:39,350 INFO L364 BuchiCegarLoop]: Difference is false [2020-12-01 15:29:39,350 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:29:39,351 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-12-01 15:29:39,368 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-12-01 15:29:39,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-12-01 15:29:39,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:29:39,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:29:39,403 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-12-01 15:29:39,403 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-12-01 15:29:39,403 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-12-01 15:29:39,404 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-12-01 15:29:39,409 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-12-01 15:29:39,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 15:29:39,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 15:29:39,410 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-12-01 15:29:39,411 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-12-01 15:29:39,423 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L21true assume !!(main_~x~0 <= 65534); 5#L22true assume !!(main_~y~0 <= 65534); 10#L24true assume !!(main_~y~0 >= -65534); 8#L25-2true [2020-12-01 15:29:39,423 INFO L796 eck$LassoCheckResult]: Loop: 8#L25-2true assume !!(main_~x~0 >= 0);main_~x~0 := main_~x~0 + main_~y~0;main_~y~0 := main_~y~0 - 1; 8#L25-2true [2020-12-01 15:29:39,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:29:39,439 INFO L82 PathProgramCache]: Analyzing trace with hash 959435, now seen corresponding path program 1 times [2020-12-01 15:29:39,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:29:39,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331133774] [2020-12-01 15:29:39,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:29:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:29:39,562 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:29:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:29:39,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:29:39,602 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:29:39,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:29:39,605 INFO L82 PathProgramCache]: Analyzing trace with hash 56, now seen corresponding path program 1 times [2020-12-01 15:29:39,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:29:39,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561620839] [2020-12-01 15:29:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:29:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:29:39,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:29:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:29:39,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:29:39,633 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:29:39,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:29:39,639 INFO L82 PathProgramCache]: Analyzing trace with hash 29742510, now seen corresponding path program 1 times [2020-12-01 15:29:39,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:29:39,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133621831] [2020-12-01 15:29:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:29:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:29:39,664 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:29:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:29:39,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:29:39,695 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:29:39,792 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:29:39,793 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:29:39,793 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:29:39,793 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:29:39,794 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-12-01 15:29:39,794 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:29:39,794 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:29:39,794 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:29:39,795 INFO L133 ssoRankerPreferences]: Filename of dumped script: 2Nested-1.c_Iteration1_Loop [2020-12-01 15:29:39,795 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:29:39,795 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:29:39,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:29:39,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:29:39,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:29:40,128 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:29:40,130 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/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 [2020-12-01 15:29:40,137 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-12-01 15:29:40,138 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/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 [2020-12-01 15:29:40,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-12-01 15:29:40,182 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-12-01 15:29:40,322 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-12-01 15:29:40,324 INFO L210 LassoAnalysis]: Preferences: [2020-12-01 15:29:40,325 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-12-01 15:29:40,325 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-12-01 15:29:40,325 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-12-01 15:29:40,326 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-12-01 15:29:40,326 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:29:40,326 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-12-01 15:29:40,326 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-12-01 15:29:40,326 INFO L133 ssoRankerPreferences]: Filename of dumped script: 2Nested-1.c_Iteration1_Loop [2020-12-01 15:29:40,326 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-12-01 15:29:40,326 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-12-01 15:29:40,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:29:40,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:29:40,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-12-01 15:29:40,445 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-12-01 15:29:40,451 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/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 [2020-12-01 15:29:40,478 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 [2020-12-01 15:29:40,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:29:40,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:29:40,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:29:40,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:29:40,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:29:40,487 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-12-01 15:29:40,488 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 15:29:40,503 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/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 [2020-12-01 15:29:40,543 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 [2020-12-01 15:29:40,547 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:29:40,547 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:29:40,547 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:29:40,548 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:29:40,556 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:29:40,556 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-12-01 15:29:40,578 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-12-01 15:29:40,634 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 [2020-12-01 15:29:40,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:29:40,638 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:29:40,638 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:29:40,638 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-12-01 15:29:40,644 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-12-01 15:29:40,644 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:29:40,669 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-12-01 15:29:40,707 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-12-01 15:29:40,711 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 [2020-12-01 15:29:40,714 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-12-01 15:29:40,714 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-12-01 15:29:40,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-12-01 15:29:40,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-12-01 15:29:40,715 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-12-01 15:29:40,723 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-12-01 15:29:40,725 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-12-01 15:29:40,742 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-12-01 15:29:40,753 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-12-01 15:29:40,753 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c779d2d2-65e6-48a3-b778-bb9799b713b3/bin/uautomizer/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 [2020-12-01 15:29:40,762 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-12-01 15:29:40,763 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-12-01 15:29:40,763 INFO L510 LassoAnalysis]: Proved termination. [2020-12-01 15:29:40,763 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 2*ULTIMATE.start_main_~y~0 + 1 f1 = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2020-12-01 15:29:40,794 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-12-01 15:29:40,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:29:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:29:40,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 15:29:40,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:29:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:29:40,951 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 15:29:40,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:29:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:29:40,978 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 [2020-12-01 15:29:40,980 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 2 states. [2020-12-01 15:29:41,057 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 2 states. Result 21 states and 26 transitions. Complement of second has 5 states. [2020-12-01 15:29:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-12-01 15:29:41,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-12-01 15:29:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-12-01 15:29:41,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 1 letters. [2020-12-01 15:29:41,065 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:29:41,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 1 letters. [2020-12-01 15:29:41,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:29:41,066 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 2 letters. [2020-12-01 15:29:41,067 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-12-01 15:29:41,068 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2020-12-01 15:29:41,076 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 15:29:41,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2020-12-01 15:29:41,082 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-12-01 15:29:41,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-12-01 15:29:41,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-12-01 15:29:41,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-12-01 15:29:41,084 INFO L692 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:29:41,084 INFO L715 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:29:41,084 INFO L595 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:29:41,085 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-12-01 15:29:41,085 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:29:41,085 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-12-01 15:29:41,085 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-12-01 15:29:41,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 03:29:41 BoogieIcfgContainer [2020-12-01 15:29:41,094 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-12-01 15:29:41,097 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:29:41,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:29:41,098 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:29:41,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:29:39" (3/4) ... [2020-12-01 15:29:41,103 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:29:41,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:29:41,107 INFO L168 Benchmark]: Toolchain (without parser) took 2662.88 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 71.0 MB in the beginning and 93.6 MB in the end (delta: -22.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:29:41,109 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 98.6 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:29:41,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.04 ms. Allocated memory is still 98.6 MB. Free memory was 70.8 MB in the beginning and 76.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:29:41,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.88 ms. Allocated memory is still 98.6 MB. Free memory was 76.1 MB in the beginning and 74.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:29:41,115 INFO L168 Benchmark]: Boogie Preprocessor took 33.57 ms. Allocated memory is still 98.6 MB. Free memory was 74.9 MB in the beginning and 74.1 MB in the end (delta: 791.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:29:41,118 INFO L168 Benchmark]: RCFGBuilder took 380.14 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 65.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:29:41,119 INFO L168 Benchmark]: BuchiAutomizer took 1867.73 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.4 MB in the beginning and 94.6 MB in the end (delta: -29.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:29:41,122 INFO L168 Benchmark]: Witness Printer took 6.47 ms. Allocated memory is still 119.5 MB. Free memory was 94.6 MB in the beginning and 93.6 MB in the end (delta: 999.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:29:41,135 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 98.6 MB. Free memory is still 54.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.04 ms. Allocated memory is still 98.6 MB. Free memory was 70.8 MB in the beginning and 76.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.88 ms. Allocated memory is still 98.6 MB. Free memory was 76.1 MB in the beginning and 74.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.57 ms. Allocated memory is still 98.6 MB. Free memory was 74.9 MB in the beginning and 74.1 MB in the end (delta: 791.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 380.14 ms. Allocated memory is still 98.6 MB. Free memory was 74.1 MB in the beginning and 65.7 MB in the end (delta: 8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1867.73 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 65.4 MB in the beginning and 94.6 MB in the end (delta: -29.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.47 ms. Allocated memory is still 119.5 MB. Free memory was 94.6 MB in the beginning and 93.6 MB in the end (delta: 999.8 kB). Peak memory consumption was 2.1 MB. 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 2-nested ranking function (if 2 * y + 1 > 0 then 1 else 0), (if 2 * y + 1 > 0 then 2 * y + 1 else 2 * x + 1) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. 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: 12 SDtfs, 12 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf92 smp100 dnf100 smp100 tf108 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 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...