./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/nested9.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/nested9.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 b0874b2316aff3266709463f0d72702527bf3a82 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:22:02,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:22:02,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:22:02,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:22:02,649 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:22:02,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:22:02,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:22:02,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:22:02,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:22:02,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:22:02,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:22:02,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:22:02,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:22:02,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:22:02,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:22:02,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:22:02,658 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:22:02,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:22:02,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:22:02,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:22:02,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:22:02,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:22:02,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:22:02,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:22:02,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:22:02,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:22:02,666 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:22:02,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:22:02,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:22:02,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:22:02,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:22:02,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:22:02,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:22:02,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:22:02,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:22:02,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:22:02,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:22:02,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:22:02,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:22:02,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:22:02,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:22:02,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:22:02,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:22:02,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:22:02,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:22:02,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:22:02,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:22:02,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:22:02,689 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:22:02,689 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:22:02,689 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:22:02,689 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:22:02,689 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:22:02,690 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:22:02,690 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:22:02,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:22:02,690 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:22:02,690 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:22:02,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:22:02,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:22:02,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:22:02,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:22:02,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:22:02,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:22:02,692 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:22:02,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:22:02,692 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:22:02,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:22:02,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:22:02,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:22:02,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:22:02,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:22:02,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:22:02,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:22:02,694 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:22:02,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0874b2316aff3266709463f0d72702527bf3a82 [2021-08-27 15:22:02,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:22:02,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:22:02,943 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:22:02,944 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:22:02,944 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:22:02,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/nested9.i [2021-08-27 15:22:03,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0601b1bf8/a692e75788b44476ab343b038705d559/FLAGa77183c19 [2021-08-27 15:22:03,314 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:22:03,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nested9.i [2021-08-27 15:22:03,321 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0601b1bf8/a692e75788b44476ab343b038705d559/FLAGa77183c19 [2021-08-27 15:22:03,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0601b1bf8/a692e75788b44476ab343b038705d559 [2021-08-27 15:22:03,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:22:03,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:22:03,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:22:03,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:22:03,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:22:03,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:22:03" (1/1) ... [2021-08-27 15:22:03,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69ee2c4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03, skipping insertion in model container [2021-08-27 15:22:03,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:22:03" (1/1) ... [2021-08-27 15:22:03,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:22:03,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:22:03,871 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/nested9.i[893,906] [2021-08-27 15:22:03,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:22:03,890 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:22:03,900 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/nested9.i[893,906] [2021-08-27 15:22:03,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:22:03,920 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:22:03,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03 WrapperNode [2021-08-27 15:22:03,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:22:03,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:22:03,922 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:22:03,922 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:22:03,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03" (1/1) ... [2021-08-27 15:22:03,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03" (1/1) ... [2021-08-27 15:22:03,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:22:03,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:22:03,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:22:03,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:22:03,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03" (1/1) ... [2021-08-27 15:22:03,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03" (1/1) ... [2021-08-27 15:22:03,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03" (1/1) ... [2021-08-27 15:22:03,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03" (1/1) ... [2021-08-27 15:22:03,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03" (1/1) ... [2021-08-27 15:22:03,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03" (1/1) ... [2021-08-27 15:22:03,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03" (1/1) ... [2021-08-27 15:22:03,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:22:03,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:22:03,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:22:03,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:22:03,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03" (1/1) ... [2021-08-27 15:22:03,999 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:04,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:04,022 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 15:22:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:22:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:22:04,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:22:04,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:22:04,064 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 15:22:04,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:22:04,281 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-27 15:22:04,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:22:04 BoogieIcfgContainer [2021-08-27 15:22:04,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:22:04,284 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:22:04,284 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:22:04,286 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:22:04,286 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:22:04,286 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:22:03" (1/3) ... [2021-08-27 15:22:04,287 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d55130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:22:04, skipping insertion in model container [2021-08-27 15:22:04,287 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:22:04,287 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:03" (2/3) ... [2021-08-27 15:22:04,288 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d55130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:22:04, skipping insertion in model container [2021-08-27 15:22:04,288 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:22:04,288 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:22:04" (3/3) ... [2021-08-27 15:22:04,288 INFO L389 chiAutomizerObserver]: Analyzing ICFG nested9.i [2021-08-27 15:22:04,355 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:22:04,356 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:22:04,356 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:22:04,356 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:22:04,357 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:22:04,357 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:22:04,357 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:22:04,357 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:22:04,367 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 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 15:22:04,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-27 15:22:04,381 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:04,381 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:04,384 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:04,385 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 15:22:04,385 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:22:04,385 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 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 15:22:04,386 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-27 15:22:04,386 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:04,386 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:04,387 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:04,387 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 15:22:04,391 INFO L791 eck$LassoCheckResult]: Stem: 4#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);~__BLAST_NONDET~0 := 0; 9#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 5#L30true assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 8#L31true assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 10#L32true assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 7#L33true assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 6#L33-1true main_~i~0 := 0; 21#L34-3true [2021-08-27 15:22:04,391 INFO L793 eck$LassoCheckResult]: Loop: 21#L34-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 12#L35-3true assume !true; 11#L34-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 21#L34-3true [2021-08-27 15:22:04,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:04,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2021-08-27 15:22:04,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:04,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420972365] [2021-08-27 15:22:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:04,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:04,456 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:04,476 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:04,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:04,483 INFO L82 PathProgramCache]: Analyzing trace with hash 62625, now seen corresponding path program 1 times [2021-08-27 15:22:04,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:04,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335245210] [2021-08-27 15:22:04,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:04,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:04,526 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 15:22:04,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:22:04,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335245210] [2021-08-27 15:22:04,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335245210] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:22:04,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:22:04,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-27 15:22:04,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070155551] [2021-08-27 15:22:04,530 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:22:04,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:22:04,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-27 15:22:04,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-27 15:22:04,542 INFO L87 Difference]: Start difference. First operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 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 15:22:04,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:22:04,546 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2021-08-27 15:22:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 15:22:04,548 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 25 transitions. [2021-08-27 15:22:04,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-08-27 15:22:04,552 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 14 states and 16 transitions. [2021-08-27 15:22:04,553 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-08-27 15:22:04,553 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-08-27 15:22:04,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2021-08-27 15:22:04,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:22:04,554 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-08-27 15:22:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2021-08-27 15:22:04,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-08-27 15:22:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 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 15:22:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-08-27 15:22:04,570 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-08-27 15:22:04,570 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-08-27 15:22:04,570 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:22:04,571 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2021-08-27 15:22:04,572 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-08-27 15:22:04,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:04,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:04,573 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:04,574 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 15:22:04,574 INFO L791 eck$LassoCheckResult]: Stem: 46#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 47#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 48#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 49#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 53#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 52#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 50#L33-1 main_~i~0 := 0; 51#L34-3 [2021-08-27 15:22:04,574 INFO L793 eck$LassoCheckResult]: Loop: 51#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 55#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 54#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 51#L34-3 [2021-08-27 15:22:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:04,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2021-08-27 15:22:04,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:04,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221807899] [2021-08-27 15:22:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:04,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:04,596 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:04,607 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:04,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:04,607 INFO L82 PathProgramCache]: Analyzing trace with hash 61788, now seen corresponding path program 1 times [2021-08-27 15:22:04,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:04,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355990508] [2021-08-27 15:22:04,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:04,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:04,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:04,610 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:04,622 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:04,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:04,623 INFO L82 PathProgramCache]: Analyzing trace with hash 763900016, now seen corresponding path program 1 times [2021-08-27 15:22:04,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:04,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477433247] [2021-08-27 15:22:04,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:04,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:04,635 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:04,653 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:04,715 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:04,715 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:04,715 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:04,716 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:04,716 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:22:04,716 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:04,716 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:04,716 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:04,716 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-08-27 15:22:04,716 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:04,716 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:04,725 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 15:22:04,731 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 15:22:04,788 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:04,789 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:22:04,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:04,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:04,797 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 15:22:04,800 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 15:22:04,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:04,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:04,819 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:22:04,819 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 15:22:04,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-08-27 15:22:04,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:04,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:04,842 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 15:22:04,843 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 15:22:04,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:04,845 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:04,900 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 15:22:04,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:04,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:04,902 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 15:22:04,902 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 15:22:04,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:22:04,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:05,041 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:22:05,047 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 15:22:05,047 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:05,047 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:05,047 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:05,047 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:05,047 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:22:05,047 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:05,047 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:05,047 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:05,047 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-08-27 15:22:05,047 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:05,047 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:05,048 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 15:22:05,052 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 15:22:05,118 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:05,121 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:22:05,121 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:05,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:05,129 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 15:22:05,130 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 15:22:05,132 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 15:22:05,139 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:05,139 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:05,139 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:05,140 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:05,143 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:05,145 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:05,145 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:05,156 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:05,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-08-27 15:22:05,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:05,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:05,174 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 15:22:05,175 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 15:22:05,177 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 15:22:05,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:05,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:05,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:05,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:05,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:05,186 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:05,186 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:05,200 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:22:05,205 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:22:05,205 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:22:05,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:05,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:05,211 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 15:22:05,212 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 15:22:05,213 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:22:05,213 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:22:05,213 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:22:05,214 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-08-27 15:22:05,229 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 15:22:05,231 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:22:05,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:05,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:05,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:05,318 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 15:22:05,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:05,408 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 15:22:05,411 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 15:22:05,411 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 15:22:05,481 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 16 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) Result 36 states and 46 transitions. Complement of second has 8 states. [2021-08-27 15:22:05,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-08-27 15:22:05,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 15:22:05,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2021-08-27 15:22:05,484 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 3 letters. [2021-08-27 15:22:05,484 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:05,484 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 10 letters. Loop has 3 letters. [2021-08-27 15:22:05,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:05,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 6 letters. [2021-08-27 15:22:05,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:05,485 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2021-08-27 15:22:05,486 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-08-27 15:22:05,486 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 44 transitions. [2021-08-27 15:22:05,487 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-08-27 15:22:05,487 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-08-27 15:22:05,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 44 transitions. [2021-08-27 15:22:05,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:05,487 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-08-27 15:22:05,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 44 transitions. [2021-08-27 15:22:05,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2021-08-27 15:22:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 25 states have internal predecessors, (33), 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 15:22:05,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-08-27 15:22:05,489 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-08-27 15:22:05,489 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-08-27 15:22:05,490 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:22:05,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 33 transitions. [2021-08-27 15:22:05,490 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-27 15:22:05,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:05,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:05,498 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:05,498 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:22:05,498 INFO L791 eck$LassoCheckResult]: Stem: 154#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 155#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 156#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 157#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 161#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 160#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 158#L33-1 main_~i~0 := 0; 159#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 166#L35-3 [2021-08-27 15:22:05,498 INFO L793 eck$LassoCheckResult]: Loop: 166#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 167#L36-2 assume !(main_~k~0 < main_~j~0); 171#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 176#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 162#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 163#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 166#L35-3 [2021-08-27 15:22:05,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:05,499 INFO L82 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2021-08-27 15:22:05,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:05,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573242398] [2021-08-27 15:22:05,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:05,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:05,523 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:05,532 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:05,534 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 15:22:05,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:05,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 1 times [2021-08-27 15:22:05,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:05,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474773015] [2021-08-27 15:22:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:05,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:05,553 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:05,559 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:05,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:05,560 INFO L82 PathProgramCache]: Analyzing trace with hash -696682915, now seen corresponding path program 1 times [2021-08-27 15:22:05,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:05,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135670106] [2021-08-27 15:22:05,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:05,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:05,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:22:05,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:22:05,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135670106] [2021-08-27 15:22:05,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135670106] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:22:05,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:22:05,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 15:22:05,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967510309] [2021-08-27 15:22:05,700 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:05,700 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:05,700 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:05,700 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:05,700 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:22:05,700 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:05,700 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:05,700 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:05,701 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-08-27 15:22:05,701 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:05,701 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:05,704 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 15:22:05,721 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 15:22:05,725 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 15:22:05,790 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:05,791 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:22:05,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:05,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:05,792 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 15:22:05,792 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 15:22:05,794 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:05,794 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:05,836 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 15:22:05,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:05,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:05,841 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 15:22:05,842 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 15:22:05,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:22:05,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:06,012 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:22:06,016 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 15:22:06,017 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:06,017 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:06,017 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:06,017 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:06,017 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:22:06,017 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:06,017 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:06,017 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:06,017 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-08-27 15:22:06,017 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:06,017 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:06,018 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 15:22:06,043 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 15:22:06,045 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 15:22:06,078 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:06,078 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:22:06,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:06,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:06,093 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 15:22:06,095 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 15:22:06,095 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 15:22:06,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:06,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:06,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:06,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:06,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:06,104 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:06,104 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:06,119 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:22:06,123 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-08-27 15:22:06,123 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 15:22:06,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:06,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:06,124 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 15:22:06,125 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 15:22:06,126 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:22:06,126 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:22:06,126 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:22:06,126 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-08-27 15:22:06,149 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 15:22:06,150 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:22:06,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:06,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:06,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:06,214 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 15:22:06,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:06,242 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 15:22:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:22:06,351 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-08-27 15:22:06,351 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 15:22:06,505 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 33 transitions. cyclomatic complexity: 9. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 118 states and 151 transitions. Complement of second has 13 states. [2021-08-27 15:22:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-08-27 15:22:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 15:22:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 36 transitions. [2021-08-27 15:22:06,508 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 8 letters. Loop has 6 letters. [2021-08-27 15:22:06,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:06,512 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 14 letters. Loop has 6 letters. [2021-08-27 15:22:06,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:06,512 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 8 letters. Loop has 12 letters. [2021-08-27 15:22:06,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:06,512 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 151 transitions. [2021-08-27 15:22:06,515 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2021-08-27 15:22:06,516 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 99 states and 129 transitions. [2021-08-27 15:22:06,516 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-08-27 15:22:06,516 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-08-27 15:22:06,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 129 transitions. [2021-08-27 15:22:06,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:06,517 INFO L681 BuchiCegarLoop]: Abstraction has 99 states and 129 transitions. [2021-08-27 15:22:06,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 129 transitions. [2021-08-27 15:22:06,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2021-08-27 15:22:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 71 states have internal predecessors, (97), 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 15:22:06,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2021-08-27 15:22:06,521 INFO L704 BuchiCegarLoop]: Abstraction has 72 states and 97 transitions. [2021-08-27 15:22:06,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:22:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 15:22:06,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-27 15:22:06,522 INFO L87 Difference]: Start difference. First operand 72 states and 97 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 15:22:06,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:22:06,536 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-08-27 15:22:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 15:22:06,537 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2021-08-27 15:22:06,538 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-27 15:22:06,538 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 34 transitions. [2021-08-27 15:22:06,538 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-08-27 15:22:06,538 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-08-27 15:22:06,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 34 transitions. [2021-08-27 15:22:06,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:06,539 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-08-27 15:22:06,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 34 transitions. [2021-08-27 15:22:06,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-08-27 15:22:06,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 26 states have internal predecessors, (33), 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 15:22:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-08-27 15:22:06,540 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-08-27 15:22:06,540 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-08-27 15:22:06,540 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-08-27 15:22:06,540 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2021-08-27 15:22:06,541 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-08-27 15:22:06,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:06,541 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:06,541 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:06,541 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:22:06,542 INFO L791 eck$LassoCheckResult]: Stem: 481#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 482#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 483#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 484#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 488#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 487#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 485#L33-1 main_~i~0 := 0; 486#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 495#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 496#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 507#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 493#L35-3 [2021-08-27 15:22:06,542 INFO L793 eck$LassoCheckResult]: Loop: 493#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 494#L36-2 assume !(main_~k~0 < main_~j~0); 498#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 504#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 489#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 490#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 493#L35-3 [2021-08-27 15:22:06,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:06,542 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 2 times [2021-08-27 15:22:06,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:06,542 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432403786] [2021-08-27 15:22:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:06,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:06,550 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:06,557 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:06,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:06,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 2 times [2021-08-27 15:22:06,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:06,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996177361] [2021-08-27 15:22:06,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:06,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:06,560 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:06,563 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1743510022, now seen corresponding path program 2 times [2021-08-27 15:22:06,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:06,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484013229] [2021-08-27 15:22:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:06,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-27 15:22:06,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:22:06,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484013229] [2021-08-27 15:22:06,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484013229] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:22:06,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:22:06,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-27 15:22:06,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012391775] [2021-08-27 15:22:06,679 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:06,679 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:06,682 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:06,682 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:06,682 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:22:06,682 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:06,682 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:06,682 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:06,682 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-08-27 15:22:06,682 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:06,682 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:06,685 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 15:22:06,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:22:06,706 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 15:22:06,776 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:06,777 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:22:06,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:06,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:06,778 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 15:22:06,778 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 15:22:06,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:06,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:06,809 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 15:22:06,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:06,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:06,810 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 15:22:06,810 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 15:22:06,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:22:06,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:06,981 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:22:06,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:06,987 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:06,987 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:06,987 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:06,987 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:06,987 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:22:06,987 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:06,987 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:06,987 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:06,987 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-08-27 15:22:06,987 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:06,987 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:06,988 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 15:22:06,992 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 15:22:06,995 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 15:22:07,097 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:07,098 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:22:07,098 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:07,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:07,105 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 15:22:07,106 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 15:22:07,107 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 15:22:07,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:07,115 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:07,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:07,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:07,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:07,117 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:07,117 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:07,132 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:07,157 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 15:22:07,157 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:07,158 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 15:22:07,159 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 15:22:07,161 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 15:22:07,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:07,169 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:07,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:07,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:07,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:07,170 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:07,170 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:07,183 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:07,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-08-27 15:22:07,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:07,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:07,201 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 15:22:07,202 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 15:22:07,203 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 15:22:07,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:07,212 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:07,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:07,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:07,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:07,213 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:07,213 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:07,226 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:22:07,230 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-08-27 15:22:07,230 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 15:22:07,230 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:07,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:07,231 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 15:22:07,232 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 15:22:07,233 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:22:07,233 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:22:07,233 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:22:07,233 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -2*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2021-08-27 15:22:07,251 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 15:22:07,251 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:22:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:07,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:07,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:07,313 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 15:22:07,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:07,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:22:07,426 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2021-08-27 15:22:07,426 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8 Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:22:07,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:07,597 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 33 transitions. cyclomatic complexity: 8. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 97 states and 129 transitions. Complement of second has 16 states. [2021-08-27 15:22:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-08-27 15:22:07,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:22:07,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 35 transitions. [2021-08-27 15:22:07,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 11 letters. Loop has 6 letters. [2021-08-27 15:22:07,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:07,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 17 letters. Loop has 6 letters. [2021-08-27 15:22:07,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:07,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 11 letters. Loop has 12 letters. [2021-08-27 15:22:07,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:07,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 129 transitions. [2021-08-27 15:22:07,601 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-08-27 15:22:07,603 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 93 states and 125 transitions. [2021-08-27 15:22:07,603 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-08-27 15:22:07,603 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-08-27 15:22:07,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 125 transitions. [2021-08-27 15:22:07,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:07,603 INFO L681 BuchiCegarLoop]: Abstraction has 93 states and 125 transitions. [2021-08-27 15:22:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states and 125 transitions. [2021-08-27 15:22:07,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-08-27 15:22:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 62 states have internal predecessors, (86), 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 15:22:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2021-08-27 15:22:07,607 INFO L704 BuchiCegarLoop]: Abstraction has 63 states and 86 transitions. [2021-08-27 15:22:07,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:22:07,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-27 15:22:07,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-27 15:22:07,607 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:22:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:22:07,631 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2021-08-27 15:22:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-27 15:22:07,632 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 63 transitions. [2021-08-27 15:22:07,633 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-08-27 15:22:07,633 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 29 states and 35 transitions. [2021-08-27 15:22:07,633 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-08-27 15:22:07,633 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-08-27 15:22:07,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 35 transitions. [2021-08-27 15:22:07,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:07,633 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-08-27 15:22:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 35 transitions. [2021-08-27 15:22:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-27 15:22:07,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.206896551724138) internal successors, (35), 28 states have internal predecessors, (35), 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 15:22:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-08-27 15:22:07,636 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-08-27 15:22:07,636 INFO L587 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-08-27 15:22:07,636 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-08-27 15:22:07,636 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2021-08-27 15:22:07,637 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-08-27 15:22:07,637 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:07,637 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:07,638 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:07,638 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:07,638 INFO L791 eck$LassoCheckResult]: Stem: 821#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 822#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 819#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 820#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 826#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 825#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 823#L33-1 main_~i~0 := 0; 824#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 833#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 834#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 847#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 831#L35-3 [2021-08-27 15:22:07,638 INFO L793 eck$LassoCheckResult]: Loop: 831#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 832#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 835#L18 assume !(0 == __VERIFIER_assert_~cond); 838#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 840#L36-2 assume !(main_~k~0 < main_~j~0); 842#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 843#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 827#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 828#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 831#L35-3 [2021-08-27 15:22:07,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:07,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 3 times [2021-08-27 15:22:07,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:07,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761721484] [2021-08-27 15:22:07,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:07,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:07,666 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:07,677 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:07,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:07,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1576881701, now seen corresponding path program 1 times [2021-08-27 15:22:07,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:07,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498940882] [2021-08-27 15:22:07,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:07,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:07,689 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:07,692 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:07,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:07,693 INFO L82 PathProgramCache]: Analyzing trace with hash -604215978, now seen corresponding path program 1 times [2021-08-27 15:22:07,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:07,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148009512] [2021-08-27 15:22:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:07,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:07,700 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:07,710 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:07,813 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:07,813 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:07,813 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:07,813 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:07,813 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:22:07,813 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:07,813 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:07,813 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:07,814 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-08-27 15:22:07,814 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:07,814 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:07,814 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 15:22:07,818 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 15:22:07,820 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 15:22:07,821 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 15:22:07,833 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 15:22:07,894 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:07,894 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:22:07,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:07,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:07,897 INFO L229 MonitoredProcess]: Starting monitored process 18 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 15:22:07,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-08-27 15:22:07,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:07,900 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:07,912 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:22:07,912 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 15:22:07,933 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2021-08-27 15:22:07,933 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:07,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:07,934 INFO L229 MonitoredProcess]: Starting monitored process 19 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 15:22:07,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-08-27 15:22:07,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:07,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:07,943 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:22:07,943 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:22:07,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-08-27 15:22:07,959 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:07,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:07,960 INFO L229 MonitoredProcess]: Starting monitored process 20 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 15:22:07,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-08-27 15:22:07,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:07,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:07,971 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:22:07,971 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 15:22:07,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:07,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:07,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:07,988 INFO L229 MonitoredProcess]: Starting monitored process 21 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 15:22:07,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-08-27 15:22:07,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:07,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:08,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:08,024 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:08,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:08,025 INFO L229 MonitoredProcess]: Starting monitored process 22 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 15:22:08,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-08-27 15:22:08,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:22:08,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:08,190 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:22:08,194 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2021-08-27 15:22:08,194 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:08,194 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:08,194 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:08,194 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:08,194 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:22:08,194 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:08,194 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:08,195 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:08,195 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-08-27 15:22:08,195 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:08,195 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:08,195 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 15:22:08,214 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 15:22:08,222 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 15:22:08,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:22:08,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:22:08,302 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:08,302 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:22:08,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:08,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:08,303 INFO L229 MonitoredProcess]: Starting monitored process 23 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 15:22:08,309 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 15:22:08,316 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:08,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:08,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:08,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:08,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:08,318 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:08,318 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:08,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-08-27 15:22:08,332 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:22:08,335 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:22:08,335 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:22:08,335 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:08,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:08,336 INFO L229 MonitoredProcess]: Starting monitored process 24 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 15:22:08,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-08-27 15:22:08,338 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:22:08,338 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:22:08,338 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:22:08,338 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 3 Supporting invariants [] [2021-08-27 15:22:08,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:08,363 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:22:08,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:08,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:08,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:08,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 15:22:08,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:08,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:22:08,566 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2021-08-27 15:22:08,566 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 15:22:08,684 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 117 states and 146 transitions. Complement of second has 18 states. [2021-08-27 15:22:08,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2021-08-27 15:22:08,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 15:22:08,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2021-08-27 15:22:08,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 9 letters. [2021-08-27 15:22:08,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:08,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 20 letters. Loop has 9 letters. [2021-08-27 15:22:08,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:08,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 18 letters. [2021-08-27 15:22:08,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:08,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 146 transitions. [2021-08-27 15:22:08,687 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-08-27 15:22:08,687 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 115 states and 144 transitions. [2021-08-27 15:22:08,687 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-08-27 15:22:08,688 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-08-27 15:22:08,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 144 transitions. [2021-08-27 15:22:08,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:08,688 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 144 transitions. [2021-08-27 15:22:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 144 transitions. [2021-08-27 15:22:08,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 73. [2021-08-27 15:22:08,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 72 states have internal predecessors, (94), 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 15:22:08,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2021-08-27 15:22:08,691 INFO L704 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2021-08-27 15:22:08,691 INFO L587 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2021-08-27 15:22:08,691 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-08-27 15:22:08,691 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 94 transitions. [2021-08-27 15:22:08,691 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-08-27 15:22:08,691 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:08,691 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:08,692 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:08,692 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:22:08,692 INFO L791 eck$LassoCheckResult]: Stem: 1075#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 1076#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 1077#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 1078#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 1082#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 1081#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 1079#L33-1 main_~i~0 := 0; 1080#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1115#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1127#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1129#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1103#L35-3 [2021-08-27 15:22:08,692 INFO L793 eck$LassoCheckResult]: Loop: 1103#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 1091#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1092#L18 assume !(0 == __VERIFIER_assert_~cond); 1110#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1109#L36-2 assume !(main_~k~0 < main_~j~0); 1102#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 1103#L35-3 [2021-08-27 15:22:08,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:08,693 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 4 times [2021-08-27 15:22:08,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:08,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915167486] [2021-08-27 15:22:08,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:08,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:08,698 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:08,721 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:08,724 INFO L82 PathProgramCache]: Analyzing trace with hash 2078695422, now seen corresponding path program 1 times [2021-08-27 15:22:08,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:08,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904787655] [2021-08-27 15:22:08,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:08,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:08,727 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:08,730 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:08,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:08,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1741881747, now seen corresponding path program 2 times [2021-08-27 15:22:08,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:08,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934957759] [2021-08-27 15:22:08,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:08,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:08,739 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:08,751 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:08,803 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:08,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:08,803 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:08,803 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:08,803 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:22:08,803 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:08,803 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:08,803 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:08,803 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-08-27 15:22:08,803 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:08,803 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:08,804 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 15:22:08,813 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 15:22:08,815 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 15:22:08,817 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 15:22:08,860 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:08,861 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:22:08,861 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:08,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:08,873 INFO L229 MonitoredProcess]: Starting monitored process 25 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 15:22:08,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-08-27 15:22:08,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:08,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:08,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:08,908 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:08,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:08,908 INFO L229 MonitoredProcess]: Starting monitored process 26 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 15:22:08,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-08-27 15:22:08,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:22:08,910 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:09,177 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:22:09,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:09,184 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:09,184 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:09,184 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:09,184 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:09,184 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:22:09,184 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:09,184 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:09,184 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:09,184 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-08-27 15:22:09,184 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:09,184 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:09,185 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 15:22:09,190 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 15:22:09,200 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 15:22:09,201 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 15:22:09,251 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:09,251 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:22:09,251 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:09,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:09,252 INFO L229 MonitoredProcess]: Starting monitored process 27 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 15:22:09,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-08-27 15:22:09,254 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 15:22:09,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:09,260 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:09,260 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:09,260 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:09,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:09,268 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:09,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:09,274 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:09,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-08-27 15:22:09,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:09,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:09,289 INFO L229 MonitoredProcess]: Starting monitored process 28 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 15:22:09,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-08-27 15:22:09,291 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 15:22:09,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:09,298 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:09,298 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:09,298 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:09,298 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:09,299 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:09,299 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:09,301 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:22:09,304 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-08-27 15:22:09,304 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 15:22:09,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:09,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:09,305 INFO L229 MonitoredProcess]: Starting monitored process 29 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 15:22:09,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-08-27 15:22:09,306 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:22:09,306 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:22:09,306 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:22:09,306 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 5*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-08-27 15:22:09,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-08-27 15:22:09,321 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:22:09,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:09,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:09,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:09,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 15:22:09,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:22:09,450 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-08-27 15:22:09,450 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:22:09,458 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 77 states and 98 transitions. Complement of second has 5 states. [2021-08-27 15:22:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 15:22:09,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:22:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-08-27 15:22:09,459 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2021-08-27 15:22:09,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:09,460 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 15:22:09,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:09,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:09,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:09,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:09,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 15:22:09,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:22:09,598 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-08-27 15:22:09,598 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:22:09,604 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 77 states and 98 transitions. Complement of second has 5 states. [2021-08-27 15:22:09,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 15:22:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:22:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-08-27 15:22:09,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2021-08-27 15:22:09,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:09,606 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 15:22:09,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:09,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:09,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:09,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 15:22:09,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:22:09,724 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-08-27 15:22:09,725 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:22:09,765 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 156 states and 196 transitions. Complement of second has 10 states. [2021-08-27 15:22:09,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-08-27 15:22:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:22:09,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2021-08-27 15:22:09,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 6 letters. [2021-08-27 15:22:09,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:09,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 17 letters. Loop has 6 letters. [2021-08-27 15:22:09,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:09,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 12 letters. [2021-08-27 15:22:09,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:09,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 196 transitions. [2021-08-27 15:22:09,770 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-08-27 15:22:09,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 142 states and 180 transitions. [2021-08-27 15:22:09,771 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-08-27 15:22:09,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-08-27 15:22:09,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 142 states and 180 transitions. [2021-08-27 15:22:09,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:09,772 INFO L681 BuchiCegarLoop]: Abstraction has 142 states and 180 transitions. [2021-08-27 15:22:09,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states and 180 transitions. [2021-08-27 15:22:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110. [2021-08-27 15:22:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 110 states have (on average 1.309090909090909) internal successors, (144), 109 states have internal predecessors, (144), 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 15:22:09,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2021-08-27 15:22:09,795 INFO L704 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-08-27 15:22:09,795 INFO L587 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-08-27 15:22:09,796 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-08-27 15:22:09,796 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 144 transitions. [2021-08-27 15:22:09,796 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-08-27 15:22:09,797 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:09,797 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:09,797 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:09,798 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:09,798 INFO L791 eck$LassoCheckResult]: Stem: 1659#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 1660#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 1661#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 1662#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 1666#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 1665#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 1663#L33-1 main_~i~0 := 0; 1664#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1689#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1713#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1714#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1695#L35-3 [2021-08-27 15:22:09,798 INFO L793 eck$LassoCheckResult]: Loop: 1695#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 1692#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1696#L18 assume !(0 == __VERIFIER_assert_~cond); 1682#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1676#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1677#L18 assume !(0 == __VERIFIER_assert_~cond); 1679#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1693#L36-2 assume !(main_~k~0 < main_~j~0); 1685#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 1686#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1667#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1668#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1695#L35-3 [2021-08-27 15:22:09,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:09,798 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 5 times [2021-08-27 15:22:09,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:09,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150104734] [2021-08-27 15:22:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:09,799 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:09,807 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:09,815 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:09,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:09,815 INFO L82 PathProgramCache]: Analyzing trace with hash -206190261, now seen corresponding path program 2 times [2021-08-27 15:22:09,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:09,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926351051] [2021-08-27 15:22:09,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:09,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:22:09,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:22:09,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926351051] [2021-08-27 15:22:09,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926351051] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 15:22:09,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552913859] [2021-08-27 15:22:09,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 15:22:09,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 15:22:09,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:09,886 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 15:22:09,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-08-27 15:22:09,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 15:22:09,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 15:22:09,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 15:22:09,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:22:10,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552913859] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 15:22:10,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 15:22:10,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-08-27 15:22:10,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304981146] [2021-08-27 15:22:10,127 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-08-27 15:22:10,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:22:10,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 15:22:10,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-08-27 15:22:10,129 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. cyclomatic complexity: 38 Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 states have internal predecessors, (22), 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 15:22:10,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:22:10,310 INFO L93 Difference]: Finished difference Result 270 states and 328 transitions. [2021-08-27 15:22:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 15:22:10,310 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 270 states and 328 transitions. [2021-08-27 15:22:10,311 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 63 [2021-08-27 15:22:10,312 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 270 states to 270 states and 328 transitions. [2021-08-27 15:22:10,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-08-27 15:22:10,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-08-27 15:22:10,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 328 transitions. [2021-08-27 15:22:10,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:10,313 INFO L681 BuchiCegarLoop]: Abstraction has 270 states and 328 transitions. [2021-08-27 15:22:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 328 transitions. [2021-08-27 15:22:10,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 166. [2021-08-27 15:22:10,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 166 states have (on average 1.2530120481927711) internal successors, (208), 165 states have internal predecessors, (208), 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 15:22:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 208 transitions. [2021-08-27 15:22:10,316 INFO L704 BuchiCegarLoop]: Abstraction has 166 states and 208 transitions. [2021-08-27 15:22:10,316 INFO L587 BuchiCegarLoop]: Abstraction has 166 states and 208 transitions. [2021-08-27 15:22:10,316 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-08-27 15:22:10,316 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 166 states and 208 transitions. [2021-08-27 15:22:10,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-08-27 15:22:10,317 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:10,317 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:10,317 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:10,318 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:10,318 INFO L791 eck$LassoCheckResult]: Stem: 2103#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);~__BLAST_NONDET~0 := 0; 2104#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 2105#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 2106#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 2110#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 2109#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 2107#L33-1 main_~i~0 := 0; 2108#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2135#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 2146#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 2147#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2145#L35-3 [2021-08-27 15:22:10,318 INFO L793 eck$LassoCheckResult]: Loop: 2145#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 2120#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2121#L18 assume !(0 == __VERIFIER_assert_~cond); 2127#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2128#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2143#L18 assume !(0 == __VERIFIER_assert_~cond); 2142#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2141#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2123#L18 assume !(0 == __VERIFIER_assert_~cond); 2124#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2140#L36-2 assume !(main_~k~0 < main_~j~0); 2139#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 2138#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 2111#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 2112#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2145#L35-3 [2021-08-27 15:22:10,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:10,318 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 6 times [2021-08-27 15:22:10,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:10,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852642926] [2021-08-27 15:22:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:10,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:10,323 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:10,327 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:10,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:10,327 INFO L82 PathProgramCache]: Analyzing trace with hash 452506725, now seen corresponding path program 3 times [2021-08-27 15:22:10,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:10,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216186822] [2021-08-27 15:22:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:10,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:10,332 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:10,335 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:10,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1390681386, now seen corresponding path program 3 times [2021-08-27 15:22:10,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:10,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274043084] [2021-08-27 15:22:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:10,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-27 15:22:10,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:22:10,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274043084] [2021-08-27 15:22:10,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274043084] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 15:22:10,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863184804] [2021-08-27 15:22:10,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 15:22:10,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 15:22:10,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:10,377 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 15:22:10,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-08-27 15:22:10,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-08-27 15:22:10,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 15:22:10,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 15:22:10,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:22:10,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863184804] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 15:22:10,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 15:22:10,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2021-08-27 15:22:10,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467595554] [2021-08-27 15:22:10,752 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:10,752 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:10,752 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:10,752 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:10,752 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:22:10,752 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:10,752 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:10,752 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:10,753 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-08-27 15:22:10,753 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:10,753 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:10,753 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 15:22:10,766 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 15:22:10,767 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 15:22:10,771 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 15:22:10,772 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 15:22:10,834 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:10,834 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:22:10,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:10,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:10,835 INFO L229 MonitoredProcess]: Starting monitored process 32 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 15:22:10,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-08-27 15:22:10,837 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:10,837 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:10,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:10,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:10,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:10,863 INFO L229 MonitoredProcess]: Starting monitored process 33 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 15:22:10,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-08-27 15:22:10,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:22:10,865 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:11,073 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:22:11,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:11,079 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:11,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:11,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:11,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:11,079 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:22:11,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:11,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:11,079 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:11,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-08-27 15:22:11,080 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:11,080 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:11,080 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 15:22:11,104 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 15:22:11,106 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 15:22:11,107 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 15:22:11,111 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 15:22:11,172 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:11,172 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:22:11,172 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:11,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:11,173 INFO L229 MonitoredProcess]: Starting monitored process 34 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 15:22:11,181 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 15:22:11,187 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:11,187 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:11,188 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:11,188 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:11,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:11,189 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:11,189 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:11,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-08-27 15:22:11,208 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:22:11,211 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:22:11,211 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:22:11,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:11,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:11,212 INFO L229 MonitoredProcess]: Starting monitored process 35 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 15:22:11,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-08-27 15:22:11,213 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:22:11,214 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:22:11,214 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:22:11,214 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 5 Supporting invariants [] [2021-08-27 15:22:11,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:11,236 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:22:11,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:11,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:11,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:11,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 15:22:11,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:11,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:11,470 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:22:11,470 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-08-27 15:22:11,471 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 166 states and 208 transitions. cyclomatic complexity: 46 Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 15:22:11,748 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 166 states and 208 transitions. cyclomatic complexity: 46. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 672 states and 840 transitions. Complement of second has 32 states. [2021-08-27 15:22:11,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 17 states 1 stem states 15 non-accepting loop states 1 accepting loop states [2021-08-27 15:22:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 15:22:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 62 transitions. [2021-08-27 15:22:11,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 15 letters. [2021-08-27 15:22:11,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:11,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 26 letters. Loop has 15 letters. [2021-08-27 15:22:11,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:11,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 30 letters. [2021-08-27 15:22:11,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:11,750 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 672 states and 840 transitions. [2021-08-27 15:22:11,752 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-08-27 15:22:11,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 672 states to 504 states and 629 transitions. [2021-08-27 15:22:11,754 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2021-08-27 15:22:11,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2021-08-27 15:22:11,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 504 states and 629 transitions. [2021-08-27 15:22:11,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:11,755 INFO L681 BuchiCegarLoop]: Abstraction has 504 states and 629 transitions. [2021-08-27 15:22:11,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states and 629 transitions. [2021-08-27 15:22:11,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 262. [2021-08-27 15:22:11,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 262 states have (on average 1.2709923664122138) internal successors, (333), 261 states have internal predecessors, (333), 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 15:22:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 333 transitions. [2021-08-27 15:22:11,758 INFO L704 BuchiCegarLoop]: Abstraction has 262 states and 333 transitions. [2021-08-27 15:22:11,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:22:11,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 15:22:11,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-08-27 15:22:11,759 INFO L87 Difference]: Start difference. First operand 262 states and 333 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 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 15:22:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:22:11,857 INFO L93 Difference]: Finished difference Result 341 states and 428 transitions. [2021-08-27 15:22:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 15:22:11,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 341 states and 428 transitions. [2021-08-27 15:22:11,859 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-08-27 15:22:11,860 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 341 states to 283 states and 358 transitions. [2021-08-27 15:22:11,860 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-08-27 15:22:11,860 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-08-27 15:22:11,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 283 states and 358 transitions. [2021-08-27 15:22:11,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:11,860 INFO L681 BuchiCegarLoop]: Abstraction has 283 states and 358 transitions. [2021-08-27 15:22:11,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states and 358 transitions. [2021-08-27 15:22:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 278. [2021-08-27 15:22:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 278 states have (on average 1.2625899280575539) internal successors, (351), 277 states have internal predecessors, (351), 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 15:22:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 351 transitions. [2021-08-27 15:22:11,864 INFO L704 BuchiCegarLoop]: Abstraction has 278 states and 351 transitions. [2021-08-27 15:22:11,864 INFO L587 BuchiCegarLoop]: Abstraction has 278 states and 351 transitions. [2021-08-27 15:22:11,864 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-08-27 15:22:11,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 278 states and 351 transitions. [2021-08-27 15:22:11,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-08-27 15:22:11,865 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:11,865 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:11,865 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:11,865 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1] [2021-08-27 15:22:11,866 INFO L791 eck$LassoCheckResult]: Stem: 3795#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);~__BLAST_NONDET~0 := 0; 3796#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 3797#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 3798#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 3802#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 3801#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 3799#L33-1 main_~i~0 := 0; 3800#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 3823#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 3872#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 3865#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 3866#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 3882#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3980#L18 assume !(0 == __VERIFIER_assert_~cond); 3979#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3875#L36-2 assume !(main_~k~0 < main_~j~0); 3876#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 3881#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 3863#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 3864#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 3835#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 3812#L36-2 [2021-08-27 15:22:11,866 INFO L793 eck$LassoCheckResult]: Loop: 3812#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3813#L18 assume !(0 == __VERIFIER_assert_~cond); 3815#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3817#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3834#L18 assume !(0 == __VERIFIER_assert_~cond); 3832#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3826#L36-2 assume !(main_~k~0 < main_~j~0); 3819#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 3820#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 3812#L36-2 [2021-08-27 15:22:11,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:11,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1550826094, now seen corresponding path program 4 times [2021-08-27 15:22:11,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:11,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282560931] [2021-08-27 15:22:11,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:11,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:11,872 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:11,878 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:11,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:11,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1734754794, now seen corresponding path program 2 times [2021-08-27 15:22:11,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:11,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337561943] [2021-08-27 15:22:11,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:11,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:11,886 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:11,889 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:11,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:11,889 INFO L82 PathProgramCache]: Analyzing trace with hash 538979237, now seen corresponding path program 5 times [2021-08-27 15:22:11,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:11,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496700177] [2021-08-27 15:22:11,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:11,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:11,895 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:11,906 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:11,983 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:11,984 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:11,984 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:11,984 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:11,984 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:22:11,984 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:11,984 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:11,984 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:11,984 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-08-27 15:22:11,984 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:11,984 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:11,984 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 15:22:11,986 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 15:22:11,987 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 15:22:11,990 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 15:22:12,033 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:12,033 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:22:12,034 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:12,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:12,035 INFO L229 MonitoredProcess]: Starting monitored process 36 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 15:22:12,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-08-27 15:22:12,037 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:12,037 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:12,044 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:22:12,044 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:22:12,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:12,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:12,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:12,060 INFO L229 MonitoredProcess]: Starting monitored process 37 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 15:22:12,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-08-27 15:22:12,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:12,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:12,077 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:22:12,077 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 15:22:12,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-08-27 15:22:12,092 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:12,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:12,093 INFO L229 MonitoredProcess]: Starting monitored process 38 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 15:22:12,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-08-27 15:22:12,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:12,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:12,117 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:22:12,117 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 15:22:12,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:12,132 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:12,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:12,132 INFO L229 MonitoredProcess]: Starting monitored process 39 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 15:22:12,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-08-27 15:22:12,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:12,134 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:12,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-08-27 15:22:12,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:12,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:12,163 INFO L229 MonitoredProcess]: Starting monitored process 40 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 15:22:12,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-08-27 15:22:12,165 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:22:12,165 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:12,429 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:22:12,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:12,434 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:12,434 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:12,434 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:12,434 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:12,434 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:22:12,434 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:12,434 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:12,434 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:12,434 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-08-27 15:22:12,434 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:12,434 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:12,435 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 15:22:12,440 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 15:22:12,441 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 15:22:12,451 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 15:22:12,507 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:12,508 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:22:12,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:12,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:12,509 INFO L229 MonitoredProcess]: Starting monitored process 41 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 15:22:12,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-08-27 15:22:12,512 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 15:22:12,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:12,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:12,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:12,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:12,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:12,519 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:12,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:12,519 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:12,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:12,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:12,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:12,544 INFO L229 MonitoredProcess]: Starting monitored process 42 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 15:22:12,573 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 15:22:12,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:12,580 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:12,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:12,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:12,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:12,581 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:12,581 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:12,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-08-27 15:22:12,592 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:12,610 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-08-27 15:22:12,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:12,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:12,611 INFO L229 MonitoredProcess]: Starting monitored process 43 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 15:22:12,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-08-27 15:22:12,613 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 15:22:12,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:12,619 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:12,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:12,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:12,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:12,621 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:12,621 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:12,632 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:22:12,634 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:22:12,634 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:22:12,635 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:12,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:12,635 INFO L229 MonitoredProcess]: Starting monitored process 44 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 15:22:12,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-08-27 15:22:12,637 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:22:12,637 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:22:12,637 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:22:12,637 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 3*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-08-27 15:22:12,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:12,653 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:22:12,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:12,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:12,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:12,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:22:12,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:12,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-27 15:22:12,789 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 15:22:12,789 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 15:22:12,821 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 292 states and 365 transitions. Complement of second has 7 states. [2021-08-27 15:22:12,822 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 15:22:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 15:22:12,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-08-27 15:22:12,822 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 9 letters. [2021-08-27 15:22:12,822 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:12,823 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 15:22:12,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:12,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:12,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:12,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:12,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:12,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:22:12,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-27 15:22:12,949 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 15:22:12,950 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 15:22:12,963 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 292 states and 365 transitions. Complement of second has 7 states. [2021-08-27 15:22:12,964 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 15:22:12,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 15:22:12,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-08-27 15:22:12,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 9 letters. [2021-08-27 15:22:12,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:12,965 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 15:22:12,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:12,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:12,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:13,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:22:13,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-27 15:22:13,097 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 15:22:13,097 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 15:22:13,119 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 503 states and 601 transitions. Complement of second has 6 states. [2021-08-27 15:22:13,125 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 15:22:13,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 15:22:13,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-08-27 15:22:13,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 9 letters. [2021-08-27 15:22:13,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:13,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 30 letters. Loop has 9 letters. [2021-08-27 15:22:13,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:13,126 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 18 letters. [2021-08-27 15:22:13,126 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:13,126 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 503 states and 601 transitions. [2021-08-27 15:22:13,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 55 [2021-08-27 15:22:13,129 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 503 states to 383 states and 465 transitions. [2021-08-27 15:22:13,129 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-08-27 15:22:13,129 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-08-27 15:22:13,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 383 states and 465 transitions. [2021-08-27 15:22:13,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:13,130 INFO L681 BuchiCegarLoop]: Abstraction has 383 states and 465 transitions. [2021-08-27 15:22:13,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states and 465 transitions. [2021-08-27 15:22:13,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 324. [2021-08-27 15:22:13,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 324 states have (on average 1.212962962962963) internal successors, (393), 323 states have internal predecessors, (393), 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 15:22:13,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 393 transitions. [2021-08-27 15:22:13,134 INFO L704 BuchiCegarLoop]: Abstraction has 324 states and 393 transitions. [2021-08-27 15:22:13,134 INFO L587 BuchiCegarLoop]: Abstraction has 324 states and 393 transitions. [2021-08-27 15:22:13,134 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-08-27 15:22:13,134 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 324 states and 393 transitions. [2021-08-27 15:22:13,135 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-08-27 15:22:13,135 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:13,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:13,135 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:13,135 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:13,135 INFO L791 eck$LassoCheckResult]: Stem: 5471#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);~__BLAST_NONDET~0 := 0; 5472#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 5473#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 5474#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 5478#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 5477#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 5475#L33-1 main_~i~0 := 0; 5476#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5501#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 5557#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5549#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5550#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5565#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5563#L18 assume !(0 == __VERIFIER_assert_~cond); 5560#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5556#L36-2 assume !(main_~k~0 < main_~j~0); 5553#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 5548#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 5544#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5545#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5513#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5488#L36-2 [2021-08-27 15:22:13,136 INFO L793 eck$LassoCheckResult]: Loop: 5488#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5490#L18 assume !(0 == __VERIFIER_assert_~cond); 5493#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5495#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5512#L18 assume !(0 == __VERIFIER_assert_~cond); 5511#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5510#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5509#L18 assume !(0 == __VERIFIER_assert_~cond); 5508#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5507#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5505#L18 assume !(0 == __VERIFIER_assert_~cond); 5506#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5504#L36-2 assume !(main_~k~0 < main_~j~0); 5497#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 5498#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 5479#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5480#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5515#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5488#L36-2 [2021-08-27 15:22:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:13,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1550826094, now seen corresponding path program 6 times [2021-08-27 15:22:13,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:13,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668465328] [2021-08-27 15:22:13,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:13,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:13,141 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:13,146 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:13,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:13,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1362433097, now seen corresponding path program 4 times [2021-08-27 15:22:13,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:13,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412027189] [2021-08-27 15:22:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:13,147 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:13,151 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:13,155 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:13,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:13,156 INFO L82 PathProgramCache]: Analyzing trace with hash -130724088, now seen corresponding path program 7 times [2021-08-27 15:22:13,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:13,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721532683] [2021-08-27 15:22:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:13,156 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:13,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 11 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-08-27 15:22:13,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:22:13,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721532683] [2021-08-27 15:22:13,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721532683] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 15:22:13,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882780887] [2021-08-27 15:22:13,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-08-27 15:22:13,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 15:22:13,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:13,193 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 15:22:13,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-08-27 15:22:13,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:13,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 15:22:13,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:13,604 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-08-27 15:22:13,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882780887] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 15:22:13,605 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 15:22:13,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-08-27 15:22:13,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145261061] [2021-08-27 15:22:13,775 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:13,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:13,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:13,775 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:13,775 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:22:13,775 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:13,775 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:13,775 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:13,775 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2021-08-27 15:22:13,775 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:13,775 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:13,776 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 15:22:13,782 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 15:22:13,785 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 15:22:13,789 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 15:22:13,791 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 15:22:13,857 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:13,857 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:22:13,858 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:13,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:13,858 INFO L229 MonitoredProcess]: Starting monitored process 46 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 15:22:13,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-08-27 15:22:13,860 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:13,860 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:13,869 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:22:13,869 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:22:13,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:13,886 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:13,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:13,887 INFO L229 MonitoredProcess]: Starting monitored process 47 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 15:22:13,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-08-27 15:22:13,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:13,890 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:13,905 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:22:13,905 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 15:22:13,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-08-27 15:22:13,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:13,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:13,920 INFO L229 MonitoredProcess]: Starting monitored process 48 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 15:22:13,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-08-27 15:22:13,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:13,923 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:13,935 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:22:13,935 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 15:22:13,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-08-27 15:22:13,950 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:13,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:13,950 INFO L229 MonitoredProcess]: Starting monitored process 49 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 15:22:13,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-08-27 15:22:13,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:13,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:13,960 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:22:13,960 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 15:22:13,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:13,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:13,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:13,976 INFO L229 MonitoredProcess]: Starting monitored process 50 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 15:22:13,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-08-27 15:22:13,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:13,979 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:14,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-08-27 15:22:14,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:14,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:14,015 INFO L229 MonitoredProcess]: Starting monitored process 51 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 15:22:14,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-08-27 15:22:14,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:22:14,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:14,305 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:22:14,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:14,310 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:14,310 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:14,310 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:14,310 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:14,310 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:22:14,310 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:14,310 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:14,310 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:14,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2021-08-27 15:22:14,310 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:14,310 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:14,311 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 15:22:14,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:22:14,315 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 15:22:14,318 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 15:22:14,320 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 15:22:14,381 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:14,381 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:22:14,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:14,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:14,382 INFO L229 MonitoredProcess]: Starting monitored process 52 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 15:22:14,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-08-27 15:22:14,384 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 15:22:14,390 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:14,390 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:14,390 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:14,390 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:14,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:14,390 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:14,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:14,396 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:14,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-08-27 15:22:14,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:14,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:14,414 INFO L229 MonitoredProcess]: Starting monitored process 53 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 15:22:14,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-08-27 15:22:14,441 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 15:22:14,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:14,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:14,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:14,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:14,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:14,447 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:14,447 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:14,448 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:14,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-08-27 15:22:14,463 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:14,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:14,464 INFO L229 MonitoredProcess]: Starting monitored process 54 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 15:22:14,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-08-27 15:22:14,466 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 15:22:14,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:14,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:14,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:14,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:14,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:14,472 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:14,473 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:14,476 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:14,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-08-27 15:22:14,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:14,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:14,492 INFO L229 MonitoredProcess]: Starting monitored process 55 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 15:22:14,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-08-27 15:22:14,493 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 15:22:14,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:14,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:14,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:14,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:14,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:14,500 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:14,500 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:14,501 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:14,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-08-27 15:22:14,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:14,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:14,516 INFO L229 MonitoredProcess]: Starting monitored process 56 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 15:22:14,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-08-27 15:22:14,518 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 15:22:14,524 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:14,524 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:14,524 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:14,524 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:14,524 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:14,526 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:14,526 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:14,528 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:22:14,531 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-08-27 15:22:14,531 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 15:22:14,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:14,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:14,532 INFO L229 MonitoredProcess]: Starting monitored process 57 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 15:22:14,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-08-27 15:22:14,533 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:22:14,533 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:22:14,533 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:22:14,533 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 15:22:14,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:14,549 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:22:14,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:14,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:14,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:14,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:14,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:22:14,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-27 15:22:14,743 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 15:22:14,743 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 324 states and 393 transitions. cyclomatic complexity: 78 Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 15:22:14,769 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 324 states and 393 transitions. cyclomatic complexity: 78. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 763 states and 938 transitions. Complement of second has 6 states. [2021-08-27 15:22:14,770 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 15:22:14,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 15:22:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2021-08-27 15:22:14,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 21 letters. Loop has 18 letters. [2021-08-27 15:22:14,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:14,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 39 letters. Loop has 18 letters. [2021-08-27 15:22:14,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:14,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 21 letters. Loop has 36 letters. [2021-08-27 15:22:14,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:14,771 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 763 states and 938 transitions. [2021-08-27 15:22:14,774 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 15:22:14,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 763 states to 496 states and 614 transitions. [2021-08-27 15:22:14,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-08-27 15:22:14,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2021-08-27 15:22:14,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 614 transitions. [2021-08-27 15:22:14,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:14,776 INFO L681 BuchiCegarLoop]: Abstraction has 496 states and 614 transitions. [2021-08-27 15:22:14,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 614 transitions. [2021-08-27 15:22:14,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 477. [2021-08-27 15:22:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 477 states have (on average 1.2243186582809225) internal successors, (584), 476 states have internal predecessors, (584), 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 15:22:14,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 584 transitions. [2021-08-27 15:22:14,781 INFO L704 BuchiCegarLoop]: Abstraction has 477 states and 584 transitions. [2021-08-27 15:22:14,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:22:14,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 15:22:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-08-27 15:22:14,782 INFO L87 Difference]: Start difference. First operand 477 states and 584 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 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 15:22:15,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:22:15,072 INFO L93 Difference]: Finished difference Result 1182 states and 1388 transitions. [2021-08-27 15:22:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-27 15:22:15,072 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1182 states and 1388 transitions. [2021-08-27 15:22:15,076 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-08-27 15:22:15,078 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1182 states to 602 states and 721 transitions. [2021-08-27 15:22:15,078 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-08-27 15:22:15,078 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-08-27 15:22:15,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 602 states and 721 transitions. [2021-08-27 15:22:15,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:22:15,078 INFO L681 BuchiCegarLoop]: Abstraction has 602 states and 721 transitions. [2021-08-27 15:22:15,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states and 721 transitions. [2021-08-27 15:22:15,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 290. [2021-08-27 15:22:15,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 290 states have (on average 1.2) internal successors, (348), 289 states have internal predecessors, (348), 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 15:22:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 348 transitions. [2021-08-27 15:22:15,083 INFO L704 BuchiCegarLoop]: Abstraction has 290 states and 348 transitions. [2021-08-27 15:22:15,083 INFO L587 BuchiCegarLoop]: Abstraction has 290 states and 348 transitions. [2021-08-27 15:22:15,083 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-08-27 15:22:15,085 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 290 states and 348 transitions. [2021-08-27 15:22:15,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-08-27 15:22:15,086 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:15,086 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:15,086 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:22:15,086 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-08-27 15:22:15,086 INFO L791 eck$LassoCheckResult]: Stem: 8512#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);~__BLAST_NONDET~0 := 0; 8513#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 8514#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 8515#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 8519#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 8518#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 8516#L33-1 main_~i~0 := 0; 8517#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8541#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 8520#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 8521#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8524#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8525#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8606#L18 assume !(0 == __VERIFIER_assert_~cond); 8605#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8604#L36-2 assume !(main_~k~0 < main_~j~0); 8603#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 8602#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 8601#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 8572#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8574#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8599#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8658#L18 assume !(0 == __VERIFIER_assert_~cond); 8657#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8621#L36-2 assume !(main_~k~0 < main_~j~0); 8619#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 8616#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8547#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8532#L18 [2021-08-27 15:22:15,087 INFO L793 eck$LassoCheckResult]: Loop: 8532#L18 assume !(0 == __VERIFIER_assert_~cond); 8533#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8535#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8532#L18 [2021-08-27 15:22:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:15,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1984863707, now seen corresponding path program 8 times [2021-08-27 15:22:15,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:15,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268054314] [2021-08-27 15:22:15,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:15,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:15,127 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 15:22:15,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:22:15,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268054314] [2021-08-27 15:22:15,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268054314] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 15:22:15,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829559468] [2021-08-27 15:22:15,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 15:22:15,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 15:22:15,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:15,133 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 15:22:15,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-08-27 15:22:15,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 15:22:15,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 15:22:15,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 15:22:15,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 15:22:15,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829559468] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-27 15:22:15,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 15:22:15,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-08-27 15:22:15,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873725518] [2021-08-27 15:22:15,452 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 15:22:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:15,453 INFO L82 PathProgramCache]: Analyzing trace with hash 84523, now seen corresponding path program 1 times [2021-08-27 15:22:15,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:15,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840721449] [2021-08-27 15:22:15,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:15,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:15,458 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:15,462 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:15,498 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:15,498 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:15,498 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:15,499 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:15,499 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:22:15,499 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:15,499 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:15,499 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:15,499 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2021-08-27 15:22:15,499 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:15,499 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:15,500 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 15:22:15,501 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 15:22:15,685 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:15,685 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:22:15,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:15,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:15,686 INFO L229 MonitoredProcess]: Starting monitored process 59 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 15:22:15,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-08-27 15:22:15,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:15,688 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:15,695 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:22:15,695 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:22:15,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:15,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:15,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:15,710 INFO L229 MonitoredProcess]: Starting monitored process 60 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 15:22:15,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-08-27 15:22:15,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:15,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:15,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2021-08-27 15:22:15,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:15,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:15,735 INFO L229 MonitoredProcess]: Starting monitored process 61 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 15:22:15,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-08-27 15:22:15,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:22:15,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:16,481 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:22:16,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-08-27 15:22:16,486 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:16,486 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:16,486 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:16,486 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:16,486 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:22:16,486 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:16,486 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:16,486 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:16,486 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2021-08-27 15:22:16,486 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:16,486 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:16,487 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 15:22:16,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:22:16,688 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:16,689 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:22:16,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:16,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:16,689 INFO L229 MonitoredProcess]: Starting monitored process 62 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 15:22:16,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-08-27 15:22:16,695 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 15:22:16,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:16,701 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:16,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:16,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:16,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:16,702 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:16,702 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:16,703 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:16,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-08-27 15:22:16,718 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:16,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:16,719 INFO L229 MonitoredProcess]: Starting monitored process 63 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 15:22:16,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-08-27 15:22:16,721 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 15:22:16,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:16,727 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:16,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:16,728 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-08-27 15:22:16,728 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:16,732 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-08-27 15:22:16,732 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:16,738 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:22:16,742 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-08-27 15:22:16,742 INFO L444 ModelExtractionUtils]: 4 out of 8 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 15:22:16,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:16,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:16,743 INFO L229 MonitoredProcess]: Starting monitored process 64 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 15:22:16,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-08-27 15:22:16,745 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:22:16,745 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:22:16,745 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:22:16,745 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~j~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-08-27 15:22:16,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2021-08-27 15:22:16,760 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:22:16,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:16,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:16,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:16,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:22:16,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:16,885 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 15:22:16,886 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 15:22:16,886 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 15:22:16,902 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 313 states and 374 transitions. Complement of second has 7 states. [2021-08-27 15:22:16,902 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 15:22:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 15:22:16,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-08-27 15:22:16,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 28 letters. Loop has 3 letters. [2021-08-27 15:22:16,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:16,905 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 15:22:16,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:16,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:16,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:16,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:16,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:22:16,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:17,006 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 15:22:17,007 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 15:22:17,007 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 15:22:17,019 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 313 states and 374 transitions. Complement of second has 7 states. [2021-08-27 15:22:17,020 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 15:22:17,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 15:22:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-08-27 15:22:17,020 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 28 letters. Loop has 3 letters. [2021-08-27 15:22:17,020 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:17,020 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-08-27 15:22:17,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:17,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:17,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:17,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:17,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:22:17,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:17,131 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 15:22:17,131 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 15:22:17,131 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 15:22:17,148 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 473 states and 544 transitions. Complement of second has 6 states. [2021-08-27 15:22:17,149 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 15:22:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 15:22:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2021-08-27 15:22:17,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 28 letters. Loop has 3 letters. [2021-08-27 15:22:17,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:17,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 31 letters. Loop has 3 letters. [2021-08-27 15:22:17,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:17,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 28 letters. Loop has 6 letters. [2021-08-27 15:22:17,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:17,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 473 states and 544 transitions. [2021-08-27 15:22:17,151 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:22:17,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 473 states to 0 states and 0 transitions. [2021-08-27 15:22:17,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 15:22:17,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 15:22:17,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 15:22:17,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:22:17,152 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:22:17,152 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:22:17,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:22:17,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 15:22:17,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-08-27 15:22:17,152 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 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 15:22:17,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:22:17,152 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-08-27 15:22:17,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 15:22:17,152 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-08-27 15:22:17,152 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:22:17,153 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 15:22:17,153 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 15:22:17,153 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 15:22:17,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 15:22:17,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:22:17,153 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:22:17,158 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:22:17,158 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:22:17,158 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-08-27 15:22:17,158 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 15:22:17,158 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:22:17,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 15:22:17,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:22:17 BoogieIcfgContainer [2021-08-27 15:22:17,162 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:22:17,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:22:17,162 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:22:17,163 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:22:17,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:22:04" (3/4) ... [2021-08-27 15:22:17,165 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 15:22:17,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:22:17,166 INFO L168 Benchmark]: Toolchain (without parser) took 13415.43 ms. Allocated memory was 58.7 MB in the beginning and 161.5 MB in the end (delta: 102.8 MB). Free memory was 37.8 MB in the beginning and 110.7 MB in the end (delta: -72.9 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:22:17,166 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 40.8 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:22:17,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.61 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 27.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 15:22:17,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.22 ms. Allocated memory is still 58.7 MB. Free memory was 27.9 MB in the beginning and 42.9 MB in the end (delta: -15.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 15:22:17,166 INFO L168 Benchmark]: Boogie Preprocessor took 37.49 ms. Allocated memory is still 58.7 MB. Free memory was 42.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:22:17,166 INFO L168 Benchmark]: RCFGBuilder took 290.31 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 28.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 15:22:17,167 INFO L168 Benchmark]: BuchiAutomizer took 12878.22 ms. Allocated memory was 58.7 MB in the beginning and 161.5 MB in the end (delta: 102.8 MB). Free memory was 28.2 MB in the beginning and 110.7 MB in the end (delta: -82.4 MB). Peak memory consumption was 95.3 MB. Max. memory is 16.1 GB. [2021-08-27 15:22:17,167 INFO L168 Benchmark]: Witness Printer took 2.30 ms. Allocated memory is still 161.5 MB. Free memory is still 110.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:22:17,168 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 58.7 MB. Free memory was 40.8 MB in the beginning and 40.8 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 170.61 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 27.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.22 ms. Allocated memory is still 58.7 MB. Free memory was 27.9 MB in the beginning and 42.9 MB in the end (delta: -15.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.49 ms. Allocated memory is still 58.7 MB. Free memory was 42.9 MB in the beginning and 41.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 290.31 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 28.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 12878.22 ms. Allocated memory was 58.7 MB in the beginning and 161.5 MB in the end (delta: 102.8 MB). Free memory was 28.2 MB in the beginning and 110.7 MB in the end (delta: -82.4 MB). Peak memory consumption was 95.3 MB. Max. memory is 16.1 GB. * Witness Printer took 2.30 ms. Allocated memory is still 161.5 MB. Free memory is still 110.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 16 terminating modules (7 trivial, 6 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function n + -1 * j and consists of 7 locations. One deterministic module has affine ranking function n + -2 * i and consists of 9 locations. One deterministic module has affine ranking function -2 * i + 3 and consists of 10 locations. One deterministic module has affine ranking function -2 * i + 5 and consists of 17 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function 5 * i + -2 * j and consists of 6 locations. One nondeterministic module has affine ranking function 3 * i + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function j + -1 * k and consists of 4 locations. 7 modules have a trivial ranking function, the largest among these consists of 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.8s and 12 iterations. TraceHistogramMax:4. Analysis of lassos took 8.6s. Construction of modules took 0.5s. Büchi inclusion checks took 3.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 13. Automata minimization 69.1ms AutomataMinimizationTime, 14 MinimizatonAttempts, 882 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 324 states and ocurred in iteration 9. Nontrivial modules had stage [6, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 31/46 HoareTripleCheckerStatistics: 272 SDtfs, 446 SDslu, 248 SDs, 0 SdLazy, 925 SolverSat, 182 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 567.0ms Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT4 conc0 concLT4 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital38 mio100 ax100 hnf100 lsp98 ukn95 mio100 lsp100 div100 bol100 ite100 ukn100 eq144 hnf94 smp98 dnf145 smp94 tf104 neg99 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 15:22:17,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-08-27 15:22:17,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:17,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:17,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:17,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...