./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/down.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loop-invgen/down.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 2dbb8f693d4595fbb0db5e58fd784bc92a5adb54 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 15:21:46,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:21:46,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:21:46,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:21:46,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:21:46,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:21:46,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:21:46,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:21:46,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:21:46,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:21:46,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:21:46,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:21:46,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:21:46,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:21:46,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:21:46,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:21:46,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:21:46,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:21:46,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:21:46,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:21:46,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:21:46,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:21:46,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:21:46,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:21:46,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:21:46,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:21:46,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:21:46,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:21:46,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:21:46,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:21:46,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:21:46,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:21:46,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:21:46,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:21:46,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:21:46,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:21:46,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:21:46,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:21:46,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:21:46,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:21:46,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:21:46,802 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:21:46,819 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:21:46,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:21:46,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:21:46,820 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:21:46,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:21:46,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:21:46,821 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:21:46,821 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:21:46,822 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:21:46,822 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:21:46,822 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:21:46,822 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:21:46,822 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:21:46,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:21:46,823 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:21:46,823 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:21:46,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:21:46,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:21:46,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:21:46,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:21:46,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:21:46,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:21:46,824 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:21:46,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:21:46,824 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:21:46,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:21:46,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:21:46,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:21:46,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:21:46,825 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:21:46,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:21:46,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:21:46,826 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:21:46,826 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dbb8f693d4595fbb0db5e58fd784bc92a5adb54 [2021-08-27 15:21:47,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:21:47,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:21:47,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:21:47,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:21:47,086 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:21:47,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/down.i [2021-08-27 15:21:47,129 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1be4ad425/a60f3500878844d3bfc736702aa5bc93/FLAG9d9c13a08 [2021-08-27 15:21:47,428 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:21:47,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/down.i [2021-08-27 15:21:47,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1be4ad425/a60f3500878844d3bfc736702aa5bc93/FLAG9d9c13a08 [2021-08-27 15:21:47,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1be4ad425/a60f3500878844d3bfc736702aa5bc93 [2021-08-27 15:21:47,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:21:47,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:21:47,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:21:47,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:21:47,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:21:47,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bd5c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:47, skipping insertion in model container [2021-08-27 15:21:47,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:21:47" (1/1) ... [2021-08-27 15:21:47,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:21:47,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:21:47,985 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/down.i[893,906] [2021-08-27 15:21:47,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:21:47,994 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:21:48,035 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/down.i[893,906] [2021-08-27 15:21:48,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:21:48,045 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:21:48,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:48 WrapperNode [2021-08-27 15:21:48,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:21:48,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:21:48,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:21:48,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:21:48,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:48" (1/1) ... [2021-08-27 15:21:48,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:48" (1/1) ... [2021-08-27 15:21:48,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:21:48,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:21:48,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:21:48,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:21:48,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:48" (1/1) ... [2021-08-27 15:21:48,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:48" (1/1) ... [2021-08-27 15:21:48,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:48" (1/1) ... [2021-08-27 15:21:48,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:48" (1/1) ... [2021-08-27 15:21:48,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:48" (1/1) ... [2021-08-27 15:21:48,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:48" (1/1) ... [2021-08-27 15:21:48,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:48" (1/1) ... [2021-08-27 15:21:48,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:21:48,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:21:48,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:21:48,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:21:48,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:48" (1/1) ... [2021-08-27 15:21:48,081 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:48,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:48,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:48,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 15:21:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:21:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:21:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:21:48,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:21:48,244 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:21:48,245 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-27 15:21:48,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:21:48 BoogieIcfgContainer [2021-08-27 15:21:48,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:21:48,247 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:21:48,247 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:21:48,249 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:21:48,249 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:21:48,249 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:21:47" (1/3) ... [2021-08-27 15:21:48,250 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c515284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:21:48, skipping insertion in model container [2021-08-27 15:21:48,250 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:21:48,250 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:21:48" (2/3) ... [2021-08-27 15:21:48,250 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c515284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:21:48, skipping insertion in model container [2021-08-27 15:21:48,250 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:21:48,251 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:21:48" (3/3) ... [2021-08-27 15:21:48,251 INFO L389 chiAutomizerObserver]: Analyzing ICFG down.i [2021-08-27 15:21:48,277 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:21:48,278 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:21:48,278 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:21:48,278 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:21:48,278 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:21:48,278 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:21:48,278 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:21:48,278 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:21:48,286 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:21:48,296 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-08-27 15:21:48,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:21:48,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:21:48,299 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 15:21:48,299 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 15:21:48,299 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:21:48,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:21:48,301 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-08-27 15:21:48,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:21:48,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:21:48,301 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-08-27 15:21:48,301 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 15:21:48,305 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 8#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_#t~post7, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 11#L29-2true [2021-08-27 15:21:48,305 INFO L793 eck$LassoCheckResult]: Loop: 11#L29-2true assume !!(main_~i~0 < main_~n~0);main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4;main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 11#L29-2true [2021-08-27 15:21:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:48,309 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-08-27 15:21:48,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:21:48,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089779724] [2021-08-27 15:21:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:21:48,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:21:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,372 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:21:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,391 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:21:48,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:48,393 INFO L82 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2021-08-27 15:21:48,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:21:48,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981583034] [2021-08-27 15:21:48,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:21:48,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:21:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,398 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:21:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,403 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:21:48,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:48,404 INFO L82 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-08-27 15:21:48,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:21:48,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870593234] [2021-08-27 15:21:48,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:21:48,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:21:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,416 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:21:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:48,431 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:21:48,472 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:21:48,473 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:21:48,473 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:21:48,473 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:21:48,473 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:21:48,473 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:48,473 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:21:48,473 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:21:48,473 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration1_Loop [2021-08-27 15:21:48,474 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:21:48,474 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:21:48,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:48,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:48,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:48,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:48,540 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:21:48,540 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:21:48,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:48,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:48,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:48,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 15:21:48,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:21:48,545 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:21:48,566 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:21:48,566 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:21:48,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:48,596 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:48,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:48,599 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:48,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 15:21:48,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:21:48,602 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:21:48,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:48,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:48,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:48,641 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:48,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 15:21:48,644 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:21:48,644 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:21:48,758 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:21:48,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:48,764 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:21:48,764 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:21:48,764 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:21:48,764 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:21:48,764 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:21:48,764 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:48,765 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:21:48,765 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:21:48,765 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration1_Loop [2021-08-27 15:21:48,765 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:21:48,765 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:21:48,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:48,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:48,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:48,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:48,810 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:21:48,813 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:21:48,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:48,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:48,815 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:48,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 15:21:48,818 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:21:48,825 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:21:48,825 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:21:48,826 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:21:48,826 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:21:48,826 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:21:48,828 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:21:48,828 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:21:48,843 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:21:48,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:48,861 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:48,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:48,862 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:48,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-27 15:21:48,864 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:21:48,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:21:48,871 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:21:48,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:21:48,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:21:48,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:21:48,873 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:21:48,873 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:21:48,891 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:21:48,895 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-08-27 15:21:48,895 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 15:21:48,896 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:48,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:48,898 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:48,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-27 15:21:48,900 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:21:48,900 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:21:48,900 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:21:48,900 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-27 15:21:48,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:48,921 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:21:48,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:21:48,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:21:48,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:21:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:21:48,963 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:21:48,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:21:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:21:48,972 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-27 15:21:48,973 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:21:49,016 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 31 states and 41 transitions. Complement of second has 5 states. [2021-08-27 15:21:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 15:21:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:21:49,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2021-08-27 15:21:49,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 2 letters. Loop has 1 letters. [2021-08-27 15:21:49,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:21:49,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 3 letters. Loop has 1 letters. [2021-08-27 15:21:49,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:21:49,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 2 letters. Loop has 2 letters. [2021-08-27 15:21:49,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:21:49,023 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 41 transitions. [2021-08-27 15:21:49,025 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 15:21:49,027 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 8 states and 10 transitions. [2021-08-27 15:21:49,027 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-08-27 15:21:49,027 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-08-27 15:21:49,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2021-08-27 15:21:49,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:21:49,028 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-08-27 15:21:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2021-08-27 15:21:49,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-08-27 15:21:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:21:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2021-08-27 15:21:49,041 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-08-27 15:21:49,041 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-08-27 15:21:49,042 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:21:49,042 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2021-08-27 15:21:49,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 15:21:49,042 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:21:49,042 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:21:49,043 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-27 15:21:49,043 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 15:21:49,043 INFO L791 eck$LassoCheckResult]: Stem: 77#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 78#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_#t~post7, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 81#L29-2 assume !(main_~i~0 < main_~n~0); 79#L29-3 main_~j~0 := main_~n~0; 80#L34-2 [2021-08-27 15:21:49,043 INFO L793 eck$LassoCheckResult]: Loop: 80#L34-2 assume !!(main_~j~0 > 0);__VERIFIER_assert_#in~cond := (if main_~k~0 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 75#L18 assume !(0 == __VERIFIER_assert_~cond); 76#L18-2 main_#t~post6 := main_~j~0;main_~j~0 := main_#t~post6 - 1;havoc main_#t~post6;main_#t~post7 := main_~k~0;main_~k~0 := main_#t~post7 - 1;havoc main_#t~post7; 80#L34-2 [2021-08-27 15:21:49,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:49,044 INFO L82 PathProgramCache]: Analyzing trace with hash 925737, now seen corresponding path program 1 times [2021-08-27 15:21:49,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:21:49,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230355685] [2021-08-27 15:21:49,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:21:49,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:21:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:49,052 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:21:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:49,060 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:21:49,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:49,060 INFO L82 PathProgramCache]: Analyzing trace with hash 53850, now seen corresponding path program 1 times [2021-08-27 15:21:49,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:21:49,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051468795] [2021-08-27 15:21:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:21:49,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:21:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:49,065 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:21:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:21:49,068 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:21:49,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:49,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1808851250, now seen corresponding path program 1 times [2021-08-27 15:21:49,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:21:49,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527007754] [2021-08-27 15:21:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:21:49,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:21:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:21:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:21:49,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:21:49,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527007754] [2021-08-27 15:21:49,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527007754] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:21:49,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:21:49,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 15:21:49,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410194910] [2021-08-27 15:21:49,151 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:21:49,151 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:21:49,151 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:21:49,151 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:21:49,152 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:21:49,152 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:49,152 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:21:49,152 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:21:49,152 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration2_Loop [2021-08-27 15:21:49,152 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:21:49,152 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:21:49,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:49,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:49,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:49,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:49,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:49,216 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:21:49,216 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:21:49,216 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:49,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:49,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:49,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-27 15:21:49,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:21:49,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:21:49,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:21:49,241 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:21:49,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:49,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:49,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:49,260 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:49,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-27 15:21:49,263 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:21:49,263 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:21:49,284 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:21:49,285 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:21:49,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:49,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:49,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:49,303 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:49,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-27 15:21:49,306 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:21:49,306 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:21:49,324 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:21:49,324 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7=0} Honda state: {ULTIMATE.start_main_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:21:49,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:49,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:49,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:49,347 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:49,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:21:49,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:21:49,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-08-27 15:21:49,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:49,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:49,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:49,390 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:49,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-08-27 15:21:49,393 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:21:49,393 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:21:49,441 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:21:49,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:49,444 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:21:49,444 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:21:49,444 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:21:49,444 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:21:49,444 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:21:49,444 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:49,444 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:21:49,445 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:21:49,445 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration2_Loop [2021-08-27 15:21:49,445 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:21:49,445 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:21:49,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:49,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:49,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:49,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:49,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:21:49,523 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:21:49,523 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:21:49,524 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:49,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:49,524 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:49,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-08-27 15:21:49,558 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:21:49,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:21:49,575 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:21:49,575 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:21:49,575 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:21:49,575 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:21:49,576 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:21:49,577 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:21:49,596 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:21:49,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-08-27 15:21:49,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:49,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:49,616 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:49,629 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:21:49,637 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:21:49,637 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:21:49,637 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:21:49,637 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:21:49,637 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:21:49,639 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:21:49,639 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:21:49,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-08-27 15:21:49,650 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:21:49,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:49,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:49,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:49,668 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:49,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-08-27 15:21:49,670 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:21:49,677 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:21:49,677 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:21:49,677 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:21:49,677 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:21:49,677 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:21:49,678 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:21:49,678 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:21:49,692 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:21:49,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:49,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:49,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:49,712 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:49,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-08-27 15:21:49,716 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:21:49,722 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:21:49,723 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:21:49,723 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:21:49,723 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:21:49,723 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:21:49,727 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:21:49,727 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:21:49,741 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:21:49,743 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-08-27 15:21:49,743 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:21:49,743 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:21:49,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:21:49,744 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:21:49,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-08-27 15:21:49,746 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:21:49,747 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:21:49,747 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:21:49,747 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2021-08-27 15:21:49,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-08-27 15:21:49,765 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:21:49,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:21:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:21:49,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:21:49,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:21:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:21:49,805 WARN L261 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 15:21:49,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:21:49,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-08-27 15:21:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:21:49,938 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 [2021-08-27 15:21:49,938 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:21:49,965 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 14 transitions. Complement of second has 6 states. [2021-08-27 15:21:49,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-08-27 15:21:49,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:21:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-08-27 15:21:49,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 3 letters. [2021-08-27 15:21:49,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:21:49,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 3 letters. [2021-08-27 15:21:49,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:21:49,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 6 letters. [2021-08-27 15:21:49,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:21:49,967 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2021-08-27 15:21:49,968 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:21:49,968 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2021-08-27 15:21:49,968 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 15:21:49,968 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 15:21:49,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 15:21:49,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:21:49,968 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:21:49,968 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:21:49,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:21:49,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 15:21:49,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 15:21:49,971 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:21:49,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:21:49,972 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-08-27 15:21:49,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 15:21:49,972 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-08-27 15:21:49,972 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:21:49,972 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 15:21:49,972 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 15:21:49,972 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 15:21:49,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 15:21:49,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:21:49,973 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:21:49,973 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:21:49,973 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:21:49,973 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:21:49,973 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 15:21:49,973 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:21:49,973 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 15:21:49,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:21:49 BoogieIcfgContainer [2021-08-27 15:21:49,976 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:21:49,977 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:21:49,977 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:21:49,977 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:21:49,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:21:48" (3/4) ... [2021-08-27 15:21:49,979 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 15:21:49,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:21:49,980 INFO L168 Benchmark]: Toolchain (without parser) took 2109.42 ms. Allocated memory was 52.4 MB in the beginning and 92.3 MB in the end (delta: 39.8 MB). Free memory was 30.9 MB in the beginning and 59.0 MB in the end (delta: -28.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-08-27 15:21:49,980 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:21:49,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.66 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 30.8 MB in the beginning and 59.5 MB in the end (delta: -28.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-08-27 15:21:49,981 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.00 ms. Allocated memory is still 75.5 MB. Free memory was 59.5 MB in the beginning and 58.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:21:49,981 INFO L168 Benchmark]: Boogie Preprocessor took 11.06 ms. Allocated memory is still 75.5 MB. Free memory was 58.0 MB in the beginning and 57.2 MB in the end (delta: 800.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:21:49,981 INFO L168 Benchmark]: RCFGBuilder took 169.81 ms. Allocated memory is still 75.5 MB. Free memory was 56.9 MB in the beginning and 45.6 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 15:21:49,982 INFO L168 Benchmark]: BuchiAutomizer took 1729.64 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 45.4 MB in the beginning and 59.0 MB in the end (delta: -13.6 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2021-08-27 15:21:49,982 INFO L168 Benchmark]: Witness Printer took 2.06 ms. Allocated memory is still 92.3 MB. Free memory is still 59.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:21:49,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory was 34.6 MB in the beginning and 34.6 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 173.66 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 30.8 MB in the beginning and 59.5 MB in the end (delta: -28.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 18.00 ms. Allocated memory is still 75.5 MB. Free memory was 59.5 MB in the beginning and 58.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 11.06 ms. Allocated memory is still 75.5 MB. Free memory was 58.0 MB in the beginning and 57.2 MB in the end (delta: 800.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 169.81 ms. Allocated memory is still 75.5 MB. Free memory was 56.9 MB in the beginning and 45.6 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1729.64 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 45.4 MB in the beginning and 59.0 MB in the end (delta: -13.6 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. * Witness Printer took 2.06 ms. Allocated memory is still 92.3 MB. Free memory is still 59.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function k and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.7s and 3 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 3. Minimization of nondet autom 0. Automata minimization 5.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 16 SDslu, 8 SDs, 0 SdLazy, 11 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.8ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 15:21:50,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...