./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 ff03de63 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 f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:23:09,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:23:09,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:23:09,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:23:09,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:23:09,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:23:09,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:23:09,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:23:09,553 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:23:09,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:23:09,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:23:09,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:23:09,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:23:09,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:23:09,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:23:09,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:23:09,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:23:09,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:23:09,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:23:09,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:23:09,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:23:09,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:23:09,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:23:09,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:23:09,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:23:09,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:23:09,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:23:09,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:23:09,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:23:09,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:23:09,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:23:09,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:23:09,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:23:09,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:23:09,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:23:09,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:23:09,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:23:09,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:23:09,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:23:09,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:23:09,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:23:09,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-21 22:23:09,609 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:23:09,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:23:09,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:23:09,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:23:09,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:23:09,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:23:09,611 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:23:09,611 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:23:09,611 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:23:09,611 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:23:09,612 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:23:09,612 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:23:09,612 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:23:09,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:23:09,612 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 22:23:09,612 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:23:09,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:23:09,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 22:23:09,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:23:09,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:23:09,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:23:09,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:23:09,613 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 22:23:09,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:23:09,613 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:23:09,613 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:23:09,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:23:09,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:23:09,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:23:09,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:23:09,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:23:09,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:23:09,615 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:23:09,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a [2021-12-21 22:23:09,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:23:09,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:23:09,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:23:09,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:23:09,815 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:23:09,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/nested9.i [2021-12-21 22:23:09,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71fd5f8d4/1d90a49dcf9041aca1d558723acc20a1/FLAGb51b2f3b9 [2021-12-21 22:23:10,166 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:23:10,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/nested9.i [2021-12-21 22:23:10,171 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71fd5f8d4/1d90a49dcf9041aca1d558723acc20a1/FLAGb51b2f3b9 [2021-12-21 22:23:10,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71fd5f8d4/1d90a49dcf9041aca1d558723acc20a1 [2021-12-21 22:23:10,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:23:10,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:23:10,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:23:10,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:23:10,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:23:10,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:23:10" (1/1) ... [2021-12-21 22:23:10,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f073cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10, skipping insertion in model container [2021-12-21 22:23:10,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:23:10" (1/1) ... [2021-12-21 22:23:10,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:23:10,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:23:10,746 WARN L230 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] [2021-12-21 22:23:10,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:23:10,768 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:23:10,783 WARN L230 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] [2021-12-21 22:23:10,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:23:10,806 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:23:10,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10 WrapperNode [2021-12-21 22:23:10,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:23:10,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:23:10,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:23:10,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:23:10,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10" (1/1) ... [2021-12-21 22:23:10,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10" (1/1) ... [2021-12-21 22:23:10,832 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2021-12-21 22:23:10,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:23:10,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:23:10,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:23:10,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:23:10,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10" (1/1) ... [2021-12-21 22:23:10,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10" (1/1) ... [2021-12-21 22:23:10,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10" (1/1) ... [2021-12-21 22:23:10,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10" (1/1) ... [2021-12-21 22:23:10,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10" (1/1) ... [2021-12-21 22:23:10,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10" (1/1) ... [2021-12-21 22:23:10,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10" (1/1) ... [2021-12-21 22:23:10,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:23:10,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:23:10,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:23:10,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:23:10,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10" (1/1) ... [2021-12-21 22:23:10,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:10,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:10,879 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) [2021-12-21 22:23:10,881 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 [2021-12-21 22:23:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 22:23:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 22:23:10,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:23:10,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:23:10,944 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:23:10,945 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:23:11,032 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:23:11,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:23:11,037 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-21 22:23:11,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:23:11 BoogieIcfgContainer [2021-12-21 22:23:11,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:23:11,040 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:23:11,040 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:23:11,051 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:23:11,052 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:23:11,052 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:23:10" (1/3) ... [2021-12-21 22:23:11,053 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e0f80ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:23:11, skipping insertion in model container [2021-12-21 22:23:11,053 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:23:11,053 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:10" (2/3) ... [2021-12-21 22:23:11,058 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e0f80ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:23:11, skipping insertion in model container [2021-12-21 22:23:11,059 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:23:11,059 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:23:11" (3/3) ... [2021-12-21 22:23:11,060 INFO L388 chiAutomizerObserver]: Analyzing ICFG nested9.i [2021-12-21 22:23:11,102 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:23:11,103 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:23:11,103 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:23:11,103 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:23:11,103 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:23:11,103 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:23:11,103 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:23:11,111 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:23:11,125 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:11,137 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-21 22:23:11,137 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:11,137 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:11,141 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:11,141 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:23:11,141 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:23:11,141 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:11,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-21 22:23:11,142 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:11,142 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:11,143 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:11,143 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:23:11,147 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 5#L30true assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 8#L31true assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 10#L32true assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 7#L33true assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 6#L33-1true main_~i~0#1 := 0; 22#L34-3true [2021-12-21 22:23:11,148 INFO L793 eck$LassoCheckResult]: Loop: 22#L34-3true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 13#L35-3true assume !true; 12#L34-2true main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 22#L34-3true [2021-12-21 22:23:11,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:11,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2021-12-21 22:23:11,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:11,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981025570] [2021-12-21 22:23:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:11,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:11,217 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:11,253 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:11,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash 62657, now seen corresponding path program 1 times [2021-12-21 22:23:11,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:11,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68626667] [2021-12-21 22:23:11,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:11,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:11,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:23:11,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68626667] [2021-12-21 22:23:11,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68626667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:23:11,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:23:11,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 22:23:11,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140652213] [2021-12-21 22:23:11,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:23:11,295 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 22:23:11,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:23:11,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 22:23:11,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 22:23:11,318 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 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) [2021-12-21 22:23:11,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:23:11,322 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2021-12-21 22:23:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 22:23:11,326 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2021-12-21 22:23:11,327 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-21 22:23:11,329 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 17 transitions. [2021-12-21 22:23:11,330 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-21 22:23:11,330 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-12-21 22:23:11,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2021-12-21 22:23:11,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:23:11,330 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-21 22:23:11,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2021-12-21 22:23:11,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-21 22:23:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-12-21 22:23:11,347 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-21 22:23:11,347 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-21 22:23:11,347 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 22:23:11,347 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2021-12-21 22:23:11,348 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-21 22:23:11,348 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:11,348 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:11,348 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:11,348 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:23:11,348 INFO L791 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 49#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 50#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 51#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 55#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 54#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 52#L33-1 main_~i~0#1 := 0; 53#L34-3 [2021-12-21 22:23:11,348 INFO L793 eck$LassoCheckResult]: Loop: 53#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 60#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 59#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 53#L34-3 [2021-12-21 22:23:11,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:11,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2021-12-21 22:23:11,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:11,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064124990] [2021-12-21 22:23:11,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:11,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:11,362 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:11,368 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:11,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:11,369 INFO L85 PathProgramCache]: Analyzing trace with hash 61789, now seen corresponding path program 1 times [2021-12-21 22:23:11,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:11,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844459376] [2021-12-21 22:23:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:11,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:11,393 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:11,396 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:11,397 INFO L85 PathProgramCache]: Analyzing trace with hash 763900017, now seen corresponding path program 1 times [2021-12-21 22:23:11,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:11,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301256654] [2021-12-21 22:23:11,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:11,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:11,416 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:11,425 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:11,464 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:11,465 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:11,465 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:11,465 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:11,465 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:11,465 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:11,465 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:11,465 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:11,466 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-12-21 22:23:11,466 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:11,466 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:11,476 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:11,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:11,522 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:11,523 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:11,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:11,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:11,525 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) [2021-12-21 22:23:11,526 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 [2021-12-21 22:23:11,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:11,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:11,548 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:11,548 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:11,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:11,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:11,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:11,568 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) [2021-12-21 22:23:11,582 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 [2021-12-21 22:23:11,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:11,592 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:11,628 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 [2021-12-21 22:23:11,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:11,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:11,630 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) [2021-12-21 22:23:11,630 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 [2021-12-21 22:23:11,631 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:11,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:11,785 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:11,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-21 22:23:11,791 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:11,791 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:11,791 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:11,791 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:11,791 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:11,791 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:11,791 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:11,791 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:11,791 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-12-21 22:23:11,792 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:11,792 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:11,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:11,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:11,825 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:11,828 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:11,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:11,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:11,830 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) [2021-12-21 22:23:11,831 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 [2021-12-21 22:23:11,832 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:11,839 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:11,839 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:11,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:11,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:11,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:11,843 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:11,843 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:11,858 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:11,862 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 22:23:11,862 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 22:23:11,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:11,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:11,868 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) [2021-12-21 22:23:11,870 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:11,870 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:11,871 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:11,871 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-12-21 22:23:11,886 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 [2021-12-21 22:23:11,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:11,892 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:11,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:11,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:11,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:11,951 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 22:23:11,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:11,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:11,993 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 [2021-12-21 22:23:11,994 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 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) [2021-12-21 22:23:12,054 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 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 40 states and 50 transitions. Complement of second has 8 states. [2021-12-21 22:23:12,055 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 [2021-12-21 22:23:12,055 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) [2021-12-21 22:23:12,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2021-12-21 22:23:12,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-21 22:23:12,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:12,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 10 letters. Loop has 3 letters. [2021-12-21 22:23:12,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:12,058 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 6 letters. [2021-12-21 22:23:12,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:12,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2021-12-21 22:23:12,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-12-21 22:23:12,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 48 transitions. [2021-12-21 22:23:12,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-12-21 22:23:12,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-12-21 22:23:12,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 48 transitions. [2021-12-21 22:23:12,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:12,060 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-12-21 22:23:12,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 48 transitions. [2021-12-21 22:23:12,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2021-12-21 22:23:12,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.25) internal successors, (35), 27 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) [2021-12-21 22:23:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-12-21 22:23:12,062 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-12-21 22:23:12,062 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-12-21 22:23:12,062 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 22:23:12,063 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 35 transitions. [2021-12-21 22:23:12,063 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-21 22:23:12,063 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:12,063 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:12,064 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:12,064 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-21 22:23:12,064 INFO L791 eck$LassoCheckResult]: Stem: 161#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 162#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 163#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 164#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 168#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 167#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 165#L33-1 main_~i~0#1 := 0; 166#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 179#L35-3 [2021-12-21 22:23:12,064 INFO L793 eck$LassoCheckResult]: Loop: 179#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 169#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 171#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 185#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 175#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 176#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 179#L35-3 [2021-12-21 22:23:12,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:12,064 INFO L85 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2021-12-21 22:23:12,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:12,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816600037] [2021-12-21 22:23:12,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:12,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:12,073 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:12,079 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:12,079 INFO L85 PathProgramCache]: Analyzing trace with hash 2077096969, now seen corresponding path program 1 times [2021-12-21 22:23:12,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:12,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653191517] [2021-12-21 22:23:12,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:12,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:12,084 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:12,088 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:12,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:12,088 INFO L85 PathProgramCache]: Analyzing trace with hash -696653093, now seen corresponding path program 1 times [2021-12-21 22:23:12,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:12,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485182994] [2021-12-21 22:23:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:12,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:12,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:23:12,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485182994] [2021-12-21 22:23:12,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485182994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:23:12,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:23:12,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 22:23:12,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459074713] [2021-12-21 22:23:12,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:23:12,186 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:12,186 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:12,186 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:12,186 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:12,186 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:12,186 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:12,186 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:12,186 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:12,186 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-12-21 22:23:12,186 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:12,186 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:12,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:12,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:12,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:12,232 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:12,233 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:12,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:12,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:12,236 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) [2021-12-21 22:23:12,244 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 [2021-12-21 22:23:12,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:12,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:12,312 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 [2021-12-21 22:23:12,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:12,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:12,313 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) [2021-12-21 22:23:12,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:12,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:12,337 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 [2021-12-21 22:23:12,540 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:12,544 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 [2021-12-21 22:23:12,544 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:12,544 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:12,544 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:12,544 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:12,545 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:12,545 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:12,545 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:12,545 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:12,545 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-12-21 22:23:12,545 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:12,545 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:12,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:12,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:12,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:12,614 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:12,614 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:12,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:12,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:12,615 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) [2021-12-21 22:23:12,622 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 [2021-12-21 22:23:12,622 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:12,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:12,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:12,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:12,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:12,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:12,636 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:12,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:12,647 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:12,651 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-21 22:23:12,651 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 22:23:12,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:12,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:12,700 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) [2021-12-21 22:23:12,702 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 [2021-12-21 22:23:12,703 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:12,703 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:12,703 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:12,703 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2021-12-21 22:23:12,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-21 22:23:12,722 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:12,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:12,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:12,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:12,764 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 22:23:12,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:12,839 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 [2021-12-21 22:23:12,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-21 22:23:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:12,878 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 [2021-12-21 22:23:12,878 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 35 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) [2021-12-21 22:23:12,977 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 35 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 136 states and 169 transitions. Complement of second has 13 states. [2021-12-21 22:23:12,978 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 [2021-12-21 22:23:12,978 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) [2021-12-21 22:23:12,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 40 transitions. [2021-12-21 22:23:12,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 8 letters. Loop has 6 letters. [2021-12-21 22:23:12,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:12,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 14 letters. Loop has 6 letters. [2021-12-21 22:23:12,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:12,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 8 letters. Loop has 12 letters. [2021-12-21 22:23:12,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:12,979 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 169 transitions. [2021-12-21 22:23:12,982 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 30 [2021-12-21 22:23:12,984 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 115 states and 145 transitions. [2021-12-21 22:23:12,984 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-12-21 22:23:12,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-12-21 22:23:12,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 145 transitions. [2021-12-21 22:23:12,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:12,984 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 145 transitions. [2021-12-21 22:23:12,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 145 transitions. [2021-12-21 22:23:12,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2021-12-21 22:23:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.308641975308642) internal successors, (106), 80 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 106 transitions. [2021-12-21 22:23:12,989 INFO L704 BuchiCegarLoop]: Abstraction has 81 states and 106 transitions. [2021-12-21 22:23:12,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:23:12,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 22:23:12,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 22:23:12,990 INFO L87 Difference]: Start difference. First operand 81 states and 106 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) [2021-12-21 22:23:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:23:12,999 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-12-21 22:23:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 22:23:13,000 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2021-12-21 22:23:13,001 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-21 22:23:13,001 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 30 states and 36 transitions. [2021-12-21 22:23:13,001 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-12-21 22:23:13,001 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-21 22:23:13,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2021-12-21 22:23:13,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:13,001 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-12-21 22:23:13,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2021-12-21 22:23:13,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-12-21 22:23:13,003 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) [2021-12-21 22:23:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-12-21 22:23:13,003 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-12-21 22:23:13,003 INFO L587 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-12-21 22:23:13,003 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-21 22:23:13,003 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2021-12-21 22:23:13,003 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-21 22:23:13,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:13,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:13,004 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:13,004 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-12-21 22:23:13,004 INFO L791 eck$LassoCheckResult]: Stem: 519#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 520#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 521#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 522#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 526#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 525#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 523#L33-1 main_~i~0#1 := 0; 524#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 538#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 535#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 536#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 537#L35-3 [2021-12-21 22:23:13,004 INFO L793 eck$LassoCheckResult]: Loop: 537#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 527#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 529#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 543#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 533#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 534#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 537#L35-3 [2021-12-21 22:23:13,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:13,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 2 times [2021-12-21 22:23:13,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:13,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998204955] [2021-12-21 22:23:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:13,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:13,010 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:13,016 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2077096969, now seen corresponding path program 2 times [2021-12-21 22:23:13,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:13,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303537358] [2021-12-21 22:23:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:13,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:13,021 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:13,024 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:13,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:13,025 INFO L85 PathProgramCache]: Analyzing trace with hash -669865, now seen corresponding path program 2 times [2021-12-21 22:23:13,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:13,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250402332] [2021-12-21 22:23:13,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:13,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 22:23:13,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:23:13,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250402332] [2021-12-21 22:23:13,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250402332] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:23:13,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:23:13,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 22:23:13,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372082464] [2021-12-21 22:23:13,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:23:13,093 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:13,094 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:13,094 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:13,094 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:13,094 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:13,094 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:13,094 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:13,094 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:13,094 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-12-21 22:23:13,094 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:13,094 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:13,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:13,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:13,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:13,139 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:13,140 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:13,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:13,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:13,141 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) [2021-12-21 22:23:13,144 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 [2021-12-21 22:23:13,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:13,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:13,151 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:13,151 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:13,169 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 [2021-12-21 22:23:13,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:13,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:13,170 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) [2021-12-21 22:23:13,171 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 [2021-12-21 22:23:13,172 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:13,172 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:13,203 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 [2021-12-21 22:23:13,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:13,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:13,205 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) [2021-12-21 22:23:13,205 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 [2021-12-21 22:23:13,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:13,207 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:13,428 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:13,432 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 [2021-12-21 22:23:13,432 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:13,432 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:13,432 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:13,432 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:13,432 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:13,432 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:13,433 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:13,433 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:13,433 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-12-21 22:23:13,433 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:13,433 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:13,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:13,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:13,458 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:13,503 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:13,503 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:13,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:13,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:13,504 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) [2021-12-21 22:23:13,543 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 [2021-12-21 22:23:13,544 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:13,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:13,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:13,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:13,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:13,550 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:13,551 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:13,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:13,552 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:13,569 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 [2021-12-21 22:23:13,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:13,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:13,570 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) [2021-12-21 22:23:13,571 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 [2021-12-21 22:23:13,573 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 [2021-12-21 22:23:13,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:13,579 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:13,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:13,579 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:13,579 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:13,581 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:13,581 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:13,587 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:13,593 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-21 22:23:13,594 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 22:23:13,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:13,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:13,595 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) [2021-12-21 22:23:13,595 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 [2021-12-21 22:23:13,597 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:13,597 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:13,597 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:13,597 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-12-21 22:23:13,613 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 [2021-12-21 22:23:13,614 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:13,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:13,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:13,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:13,651 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 22:23:13,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:13,731 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 [2021-12-21 22:23:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:13,736 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 [2021-12-21 22:23:13,736 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 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) [2021-12-21 22:23:13,829 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 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 105 states and 134 transitions. Complement of second has 14 states. [2021-12-21 22:23:13,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2021-12-21 22:23:13,831 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) [2021-12-21 22:23:13,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 37 transitions. [2021-12-21 22:23:13,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 37 transitions. Stem has 11 letters. Loop has 6 letters. [2021-12-21 22:23:13,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:13,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 37 transitions. Stem has 17 letters. Loop has 6 letters. [2021-12-21 22:23:13,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:13,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 37 transitions. Stem has 11 letters. Loop has 12 letters. [2021-12-21 22:23:13,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:13,832 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 134 transitions. [2021-12-21 22:23:13,833 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-12-21 22:23:13,833 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 103 states and 132 transitions. [2021-12-21 22:23:13,833 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-12-21 22:23:13,834 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-12-21 22:23:13,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 132 transitions. [2021-12-21 22:23:13,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:13,834 INFO L681 BuchiCegarLoop]: Abstraction has 103 states and 132 transitions. [2021-12-21 22:23:13,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 132 transitions. [2021-12-21 22:23:13,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 65. [2021-12-21 22:23:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 65 states have (on average 1.323076923076923) internal successors, (86), 64 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) [2021-12-21 22:23:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2021-12-21 22:23:13,837 INFO L704 BuchiCegarLoop]: Abstraction has 65 states and 86 transitions. [2021-12-21 22:23:13,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:23:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 22:23:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 22:23:13,837 INFO L87 Difference]: Start difference. First operand 65 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) [2021-12-21 22:23:13,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:23:13,854 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2021-12-21 22:23:13,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 22:23:13,855 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 67 transitions. [2021-12-21 22:23:13,855 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-21 22:23:13,856 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 31 states and 37 transitions. [2021-12-21 22:23:13,856 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-12-21 22:23:13,856 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-12-21 22:23:13,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 37 transitions. [2021-12-21 22:23:13,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:13,856 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-12-21 22:23:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 37 transitions. [2021-12-21 22:23:13,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-21 22:23:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 30 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) [2021-12-21 22:23:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-12-21 22:23:13,857 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-12-21 22:23:13,857 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-12-21 22:23:13,857 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-21 22:23:13,857 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 37 transitions. [2021-12-21 22:23:13,858 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-21 22:23:13,858 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:13,858 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:13,858 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:13,858 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:13,858 INFO L791 eck$LassoCheckResult]: Stem: 869#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 870#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 871#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 872#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 876#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 875#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 873#L33-1 main_~i~0#1 := 0; 874#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 886#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 887#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 899#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 885#L35-3 [2021-12-21 22:23:13,858 INFO L793 eck$LassoCheckResult]: Loop: 885#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 877#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 878#L18 assume !(0 == __VERIFIER_assert_~cond#1); 892#L18-2 assume { :end_inline___VERIFIER_assert } true; 888#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 889#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 894#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 895#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 881#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 882#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 885#L35-3 [2021-12-21 22:23:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 3 times [2021-12-21 22:23:13,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:13,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259590483] [2021-12-21 22:23:13,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:13,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:13,864 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:13,869 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:13,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:13,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1137044896, now seen corresponding path program 1 times [2021-12-21 22:23:13,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:13,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609822264] [2021-12-21 22:23:13,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:13,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:13,876 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:13,880 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:13,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1923390994, now seen corresponding path program 1 times [2021-12-21 22:23:13,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:13,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959180092] [2021-12-21 22:23:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:13,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:13,889 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:13,901 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:13,975 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:13,976 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:13,976 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:13,976 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:13,976 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:13,976 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:13,976 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:13,976 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:13,976 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-12-21 22:23:13,976 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:13,976 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:13,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:13,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:13,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:13,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:13,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:14,042 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:14,043 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:14,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:14,044 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) [2021-12-21 22:23:14,045 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 [2021-12-21 22:23:14,046 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:14,046 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:14,053 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:14,053 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:14,069 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 [2021-12-21 22:23:14,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:14,070 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) [2021-12-21 22:23:14,071 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 [2021-12-21 22:23:14,072 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:14,072 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:14,084 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:14,084 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:14,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:14,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:14,101 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) [2021-12-21 22:23:14,103 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 [2021-12-21 22:23:14,104 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:14,104 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:14,124 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:14,124 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:14,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:14,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:14,143 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) [2021-12-21 22:23:14,152 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 [2021-12-21 22:23:14,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:14,152 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:14,173 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:14,173 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:14,189 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 [2021-12-21 22:23:14,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:14,191 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) [2021-12-21 22:23:14,192 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 [2021-12-21 22:23:14,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:14,194 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:14,233 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 [2021-12-21 22:23:14,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:14,235 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) [2021-12-21 22:23:14,236 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 [2021-12-21 22:23:14,237 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:14,237 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:14,493 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:14,503 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 [2021-12-21 22:23:14,504 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:14,504 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:14,504 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:14,504 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:14,504 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:14,504 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,504 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:14,504 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:14,504 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-12-21 22:23:14,504 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:14,504 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:14,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:14,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:14,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:14,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:14,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:14,571 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:14,571 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:14,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:14,576 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) [2021-12-21 22:23:14,583 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:14,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:14,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:14,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:14,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:14,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:14,592 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:14,592 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:14,599 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 [2021-12-21 22:23:14,605 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:14,623 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 [2021-12-21 22:23:14,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:14,625 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) [2021-12-21 22:23:14,625 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 [2021-12-21 22:23:14,626 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:14,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:14,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:14,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:14,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:14,632 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:14,633 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:14,633 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:14,647 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:14,663 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 [2021-12-21 22:23:14,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:14,665 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) [2021-12-21 22:23:14,666 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 [2021-12-21 22:23:14,667 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:14,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:14,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:14,674 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:14,674 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:14,674 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:14,674 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:14,674 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:14,689 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:14,705 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 [2021-12-21 22:23:14,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:14,707 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) [2021-12-21 22:23:14,708 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 [2021-12-21 22:23:14,709 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:14,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:14,716 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:14,716 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:14,716 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:14,716 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:14,716 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:14,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:14,731 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:14,748 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 [2021-12-21 22:23:14,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:14,749 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) [2021-12-21 22:23:14,750 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 [2021-12-21 22:23:14,751 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:14,757 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:14,757 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:14,758 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:14,758 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:14,758 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:14,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:14,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:14,770 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:14,784 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 22:23:14,784 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 22:23:14,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:14,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:14,788 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) [2021-12-21 22:23:14,800 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:14,800 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:14,800 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:14,800 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 3 Supporting invariants [] [2021-12-21 22:23:14,816 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 [2021-12-21 22:23:14,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:14,819 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:14,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:14,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:14,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:14,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:14,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 22:23:14,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:14,977 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 [2021-12-21 22:23:14,977 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 37 transitions. cyclomatic complexity: 8 Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:15,099 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 37 transitions. cyclomatic complexity: 8. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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 137 states and 166 transitions. Complement of second has 18 states. [2021-12-21 22:23:15,100 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 [2021-12-21 22:23:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:15,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2021-12-21 22:23:15,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 11 letters. Loop has 10 letters. [2021-12-21 22:23:15,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:15,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 21 letters. Loop has 10 letters. [2021-12-21 22:23:15,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:15,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 11 letters. Loop has 20 letters. [2021-12-21 22:23:15,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:15,104 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 137 states and 166 transitions. [2021-12-21 22:23:15,105 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2021-12-21 22:23:15,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 137 states to 135 states and 164 transitions. [2021-12-21 22:23:15,106 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 38 [2021-12-21 22:23:15,106 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-12-21 22:23:15,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 164 transitions. [2021-12-21 22:23:15,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:15,106 INFO L681 BuchiCegarLoop]: Abstraction has 135 states and 164 transitions. [2021-12-21 22:23:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states and 164 transitions. [2021-12-21 22:23:15,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 81. [2021-12-21 22:23:15,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 80 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:15,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2021-12-21 22:23:15,111 INFO L704 BuchiCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-12-21 22:23:15,111 INFO L587 BuchiCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-12-21 22:23:15,111 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-21 22:23:15,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 81 states and 102 transitions. [2021-12-21 22:23:15,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2021-12-21 22:23:15,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:15,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:15,112 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:15,112 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:15,112 INFO L791 eck$LassoCheckResult]: Stem: 1150#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1151#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1152#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1153#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1157#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1156#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1154#L33-1 main_~i~0#1 := 0; 1155#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1192#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1204#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1208#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1179#L35-3 [2021-12-21 22:23:15,112 INFO L793 eck$LassoCheckResult]: Loop: 1179#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1158#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1159#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1187#L18-2 assume { :end_inline___VERIFIER_assert } true; 1186#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1185#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1178#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1179#L35-3 [2021-12-21 22:23:15,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:15,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 4 times [2021-12-21 22:23:15,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:15,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850406121] [2021-12-21 22:23:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:15,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:15,117 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:15,121 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:15,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:15,121 INFO L85 PathProgramCache]: Analyzing trace with hash 15031842, now seen corresponding path program 1 times [2021-12-21 22:23:15,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:15,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739421643] [2021-12-21 22:23:15,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:15,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:15,124 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:15,128 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:15,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:15,128 INFO L85 PathProgramCache]: Analyzing trace with hash 28769428, now seen corresponding path program 2 times [2021-12-21 22:23:15,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:15,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112311246] [2021-12-21 22:23:15,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:15,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:15,134 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:15,140 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:15,176 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:15,176 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:15,176 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:15,176 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:15,176 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:15,176 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:15,177 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:15,177 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:15,177 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-12-21 22:23:15,177 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:15,177 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:15,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:15,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:15,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:15,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:15,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:15,227 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:15,228 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:15,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:15,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:15,229 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) [2021-12-21 22:23:15,229 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 [2021-12-21 22:23:15,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:15,232 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:15,239 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:15,239 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:15,256 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 [2021-12-21 22:23:15,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:15,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:15,257 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2021-12-21 22:23:15,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-21 22:23:15,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:15,259 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:15,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-12-21 22:23:15,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:15,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:15,282 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2021-12-21 22:23:15,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-21 22:23:15,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:15,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:15,665 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:15,669 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:15,669 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:15,670 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:15,670 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:15,670 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:15,670 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:15,670 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:15,670 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:15,670 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:15,670 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-12-21 22:23:15,670 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:15,670 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:15,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:15,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:15,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:15,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:15,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:15,731 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:15,731 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:15,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:15,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:15,733 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) [2021-12-21 22:23:15,734 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 [2021-12-21 22:23:15,736 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:15,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:15,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:15,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:15,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:15,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:15,742 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:15,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:15,757 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:15,775 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 [2021-12-21 22:23:15,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:15,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:15,777 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) [2021-12-21 22:23:15,778 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 [2021-12-21 22:23:15,779 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:15,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:15,785 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:15,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:15,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:15,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:15,786 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:15,786 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:15,791 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:15,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-12-21 22:23:15,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:15,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:15,808 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) [2021-12-21 22:23:15,808 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 [2021-12-21 22:23:15,810 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:15,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:15,817 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:15,817 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:15,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:15,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:15,818 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:15,818 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:15,828 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:15,833 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-21 22:23:15,833 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 22:23:15,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:15,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:15,834 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) [2021-12-21 22:23:15,835 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 [2021-12-21 22:23:15,836 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:15,836 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:15,836 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:15,836 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~j~0#1 + 5*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-21 22:23:15,857 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 [2021-12-21 22:23:15,858 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:15,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:15,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:15,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:15,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 22:23:15,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:15,971 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 [2021-12-21 22:23:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:15,983 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 [2021-12-21 22:23:15,983 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 81 states and 102 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:15,989 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 81 states and 102 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 85 states and 106 transitions. Complement of second has 5 states. [2021-12-21 22:23:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-21 22:23:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-12-21 22:23:15,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 7 letters. [2021-12-21 22:23:15,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:15,990 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 22:23:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:16,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:16,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:16,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 22:23:16,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:16,093 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 [2021-12-21 22:23:16,093 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 81 states and 102 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:16,099 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 81 states and 102 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 85 states and 106 transitions. Complement of second has 5 states. [2021-12-21 22:23:16,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-12-21 22:23:16,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-12-21 22:23:16,100 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 7 letters. [2021-12-21 22:23:16,100 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:16,100 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 22:23:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:16,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:16,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:16,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:16,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 22:23:16,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:16,190 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 [2021-12-21 22:23:16,190 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 81 states and 102 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:16,230 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 81 states and 102 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 183 states and 223 transitions. Complement of second has 10 states. [2021-12-21 22:23:16,231 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 [2021-12-21 22:23:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 38 transitions. [2021-12-21 22:23:16,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 11 letters. Loop has 7 letters. [2021-12-21 22:23:16,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:16,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 18 letters. Loop has 7 letters. [2021-12-21 22:23:16,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:16,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 38 transitions. Stem has 11 letters. Loop has 14 letters. [2021-12-21 22:23:16,232 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:16,232 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 223 transitions. [2021-12-21 22:23:16,233 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2021-12-21 22:23:16,234 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 169 states and 207 transitions. [2021-12-21 22:23:16,234 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-12-21 22:23:16,234 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-12-21 22:23:16,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 207 transitions. [2021-12-21 22:23:16,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:16,234 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 207 transitions. [2021-12-21 22:23:16,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 207 transitions. [2021-12-21 22:23:16,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 126. [2021-12-21 22:23:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 126 states have (on average 1.2698412698412698) internal successors, (160), 125 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 160 transitions. [2021-12-21 22:23:16,238 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 160 transitions. [2021-12-21 22:23:16,238 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 160 transitions. [2021-12-21 22:23:16,238 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-21 22:23:16,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 160 transitions. [2021-12-21 22:23:16,239 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 27 [2021-12-21 22:23:16,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:16,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:16,239 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:16,239 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:16,239 INFO L791 eck$LassoCheckResult]: Stem: 1794#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1795#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1796#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1797#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1801#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1800#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1798#L33-1 main_~i~0#1 := 0; 1799#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1824#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1808#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1809#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1832#L35-3 [2021-12-21 22:23:16,239 INFO L793 eck$LassoCheckResult]: Loop: 1832#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1827#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1830#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1829#L18-2 assume { :end_inline___VERIFIER_assert } true; 1813#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1802#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1803#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1816#L18-2 assume { :end_inline___VERIFIER_assert } true; 1819#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1828#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1821#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1822#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1806#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1807#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1832#L35-3 [2021-12-21 22:23:16,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:16,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 5 times [2021-12-21 22:23:16,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:16,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88471263] [2021-12-21 22:23:16,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:16,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:16,244 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:16,248 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:16,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:16,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2069021769, now seen corresponding path program 2 times [2021-12-21 22:23:16,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:16,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652314770] [2021-12-21 22:23:16,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:16,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:16,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:23:16,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652314770] [2021-12-21 22:23:16,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652314770] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 22:23:16,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387525730] [2021-12-21 22:23:16,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 22:23:16,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:23:16,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:16,301 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 22:23:16,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-21 22:23:16,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 22:23:16,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 22:23:16,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 22:23:16,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:16,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 22:23:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:16,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387525730] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 22:23:16,531 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 22:23:16,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2021-12-21 22:23:16,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480251657] [2021-12-21 22:23:16,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 22:23:16,531 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-21 22:23:16,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:23:16,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-21 22:23:16,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-12-21 22:23:16,536 INFO L87 Difference]: Start difference. First operand 126 states and 160 transitions. cyclomatic complexity: 38 Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:16,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:23:16,902 INFO L93 Difference]: Finished difference Result 438 states and 528 transitions. [2021-12-21 22:23:16,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-21 22:23:16,902 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 438 states and 528 transitions. [2021-12-21 22:23:16,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 105 [2021-12-21 22:23:16,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 438 states to 438 states and 528 transitions. [2021-12-21 22:23:16,906 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 62 [2021-12-21 22:23:16,906 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 62 [2021-12-21 22:23:16,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 438 states and 528 transitions. [2021-12-21 22:23:16,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:16,907 INFO L681 BuchiCegarLoop]: Abstraction has 438 states and 528 transitions. [2021-12-21 22:23:16,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states and 528 transitions. [2021-12-21 22:23:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 226. [2021-12-21 22:23:16,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 226 states have (on average 1.2212389380530972) internal successors, (276), 225 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:16,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 276 transitions. [2021-12-21 22:23:16,914 INFO L704 BuchiCegarLoop]: Abstraction has 226 states and 276 transitions. [2021-12-21 22:23:16,914 INFO L587 BuchiCegarLoop]: Abstraction has 226 states and 276 transitions. [2021-12-21 22:23:16,914 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-21 22:23:16,914 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 226 states and 276 transitions. [2021-12-21 22:23:16,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2021-12-21 22:23:16,915 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:16,915 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:16,915 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:16,915 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:16,915 INFO L791 eck$LassoCheckResult]: Stem: 2495#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 2496#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 2497#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 2498#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 2502#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 2501#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 2499#L33-1 main_~i~0#1 := 0; 2500#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 2531#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 2542#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 2543#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 2541#L35-3 [2021-12-21 22:23:16,916 INFO L793 eck$LassoCheckResult]: Loop: 2541#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 2535#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 2565#L18 assume !(0 == __VERIFIER_assert_~cond#1); 2563#L18-2 assume { :end_inline___VERIFIER_assert } true; 2549#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 2503#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 2504#L18 assume !(0 == __VERIFIER_assert_~cond#1); 2524#L18-2 assume { :end_inline___VERIFIER_assert } true; 2525#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 2538#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 2539#L18 assume !(0 == __VERIFIER_assert_~cond#1); 2668#L18-2 assume { :end_inline___VERIFIER_assert } true; 2669#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 2537#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 2536#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 2534#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 2507#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 2508#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 2541#L35-3 [2021-12-21 22:23:16,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:16,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 6 times [2021-12-21 22:23:16,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:16,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434876398] [2021-12-21 22:23:16,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:16,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:16,920 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:16,924 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:16,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:16,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1182901838, now seen corresponding path program 3 times [2021-12-21 22:23:16,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:16,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024316722] [2021-12-21 22:23:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:16,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:16,930 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:16,936 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:16,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:16,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1513942172, now seen corresponding path program 3 times [2021-12-21 22:23:16,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:16,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606728735] [2021-12-21 22:23:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:16,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 22:23:16,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:23:16,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606728735] [2021-12-21 22:23:16,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606728735] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 22:23:16,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914404538] [2021-12-21 22:23:16,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 22:23:16,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:23:16,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:16,968 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 22:23:16,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-21 22:23:16,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-21 22:23:16,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 22:23:16,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 22:23:16,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:17,113 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:17,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 22:23:17,168 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:17,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914404538] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 22:23:17,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 22:23:17,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2021-12-21 22:23:17,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501091865] [2021-12-21 22:23:17,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 22:23:17,275 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:17,275 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:17,275 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:17,275 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:17,275 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:17,276 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:17,276 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:17,276 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:17,276 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-12-21 22:23:17,276 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:17,276 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:17,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:17,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:17,280 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:17,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:17,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:17,335 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:17,335 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:17,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:17,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:17,336 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) [2021-12-21 22:23:17,337 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 [2021-12-21 22:23:17,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:17,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:17,345 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:17,345 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:17,361 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 [2021-12-21 22:23:17,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:17,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:17,362 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) [2021-12-21 22:23:17,368 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 [2021-12-21 22:23:17,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:17,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:17,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:17,375 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:17,391 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 [2021-12-21 22:23:17,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:17,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:17,392 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) [2021-12-21 22:23:17,395 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 [2021-12-21 22:23:17,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:17,396 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:17,402 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:17,403 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:17,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-12-21 22:23:17,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:17,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:17,420 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) [2021-12-21 22:23:17,422 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 [2021-12-21 22:23:17,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:17,422 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:17,446 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 [2021-12-21 22:23:17,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:17,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:17,447 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) [2021-12-21 22:23:17,448 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 [2021-12-21 22:23:17,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:17,449 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:17,731 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:17,736 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 [2021-12-21 22:23:17,736 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:17,736 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:17,736 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:17,736 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:17,736 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:17,736 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:17,736 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:17,736 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:17,736 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-12-21 22:23:17,736 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:17,737 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:17,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:17,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:17,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:17,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:17,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:17,805 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:17,805 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:17,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:17,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:17,806 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) [2021-12-21 22:23:17,807 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 [2021-12-21 22:23:17,808 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:17,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:17,814 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:17,814 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:17,814 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:17,814 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:17,815 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:17,815 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:17,819 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:17,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-12-21 22:23:17,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:17,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:17,836 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) [2021-12-21 22:23:17,837 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 [2021-12-21 22:23:17,838 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:17,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:17,844 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:17,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:17,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:17,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:17,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:17,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:17,846 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:17,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-12-21 22:23:17,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:17,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:17,862 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2021-12-21 22:23:17,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-21 22:23:17,865 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:17,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:17,872 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:17,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:17,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:17,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:17,872 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:17,872 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:17,874 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:17,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-12-21 22:23:17,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:17,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:17,891 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) [2021-12-21 22:23:17,893 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 [2021-12-21 22:23:17,895 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:17,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:17,901 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:17,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:17,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:17,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:17,903 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:17,903 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:17,911 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:17,913 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 22:23:17,913 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 22:23:17,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:17,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:17,914 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) [2021-12-21 22:23:17,915 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 [2021-12-21 22:23:17,916 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:17,916 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:17,916 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:17,916 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 5 Supporting invariants [] [2021-12-21 22:23:17,932 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 [2021-12-21 22:23:17,939 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:17,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:17,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:17,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:17,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 22:23:17,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:18,104 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 [2021-12-21 22:23:18,104 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 226 states and 276 transitions. cyclomatic complexity: 54 Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 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) [2021-12-21 22:23:18,330 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 226 states and 276 transitions. cyclomatic complexity: 54. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 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) Result 888 states and 1072 transitions. Complement of second has 32 states. [2021-12-21 22:23:18,330 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 [2021-12-21 22:23:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 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) [2021-12-21 22:23:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 71 transitions. [2021-12-21 22:23:18,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 71 transitions. Stem has 11 letters. Loop has 18 letters. [2021-12-21 22:23:18,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:18,331 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 71 transitions. Stem has 29 letters. Loop has 18 letters. [2021-12-21 22:23:18,331 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:18,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 71 transitions. Stem has 11 letters. Loop has 36 letters. [2021-12-21 22:23:18,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:18,332 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 888 states and 1072 transitions. [2021-12-21 22:23:18,335 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 106 [2021-12-21 22:23:18,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 888 states to 666 states and 803 transitions. [2021-12-21 22:23:18,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 65 [2021-12-21 22:23:18,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 65 [2021-12-21 22:23:18,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 666 states and 803 transitions. [2021-12-21 22:23:18,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:18,338 INFO L681 BuchiCegarLoop]: Abstraction has 666 states and 803 transitions. [2021-12-21 22:23:18,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states and 803 transitions. [2021-12-21 22:23:18,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 340. [2021-12-21 22:23:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 340 states have (on average 1.2323529411764707) internal successors, (419), 339 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 419 transitions. [2021-12-21 22:23:18,345 INFO L704 BuchiCegarLoop]: Abstraction has 340 states and 419 transitions. [2021-12-21 22:23:18,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:23:18,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 22:23:18,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-12-21 22:23:18,345 INFO L87 Difference]: Start difference. First operand 340 states and 419 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:18,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:23:18,537 INFO L93 Difference]: Finished difference Result 882 states and 1060 transitions. [2021-12-21 22:23:18,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 22:23:18,538 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 882 states and 1060 transitions. [2021-12-21 22:23:18,541 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 77 [2021-12-21 22:23:18,544 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 882 states to 814 states and 980 transitions. [2021-12-21 22:23:18,544 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 78 [2021-12-21 22:23:18,544 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2021-12-21 22:23:18,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 814 states and 980 transitions. [2021-12-21 22:23:18,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:18,545 INFO L681 BuchiCegarLoop]: Abstraction has 814 states and 980 transitions. [2021-12-21 22:23:18,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states and 980 transitions. [2021-12-21 22:23:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 485. [2021-12-21 22:23:18,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 485 states have (on average 1.2185567010309277) internal successors, (591), 484 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:18,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 591 transitions. [2021-12-21 22:23:18,551 INFO L704 BuchiCegarLoop]: Abstraction has 485 states and 591 transitions. [2021-12-21 22:23:18,552 INFO L587 BuchiCegarLoop]: Abstraction has 485 states and 591 transitions. [2021-12-21 22:23:18,552 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-21 22:23:18,552 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 485 states and 591 transitions. [2021-12-21 22:23:18,553 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2021-12-21 22:23:18,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:18,553 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:18,554 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:18,554 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1] [2021-12-21 22:23:18,554 INFO L791 eck$LassoCheckResult]: Stem: 5205#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 5206#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 5207#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 5208#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 5212#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 5211#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 5209#L33-1 main_~i~0#1 := 0; 5210#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 5300#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 5299#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 5296#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 5294#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 5277#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 5291#L18 assume !(0 == __VERIFIER_assert_~cond#1); 5289#L18-2 assume { :end_inline___VERIFIER_assert } true; 5286#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 5284#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 5280#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 5276#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 5274#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 5269#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 5268#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 5267#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 5335#L18 assume !(0 == __VERIFIER_assert_~cond#1); 5334#L18-2 assume { :end_inline___VERIFIER_assert } true; 5333#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 5307#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 5303#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 5301#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 5213#L36-3 [2021-12-21 22:23:18,554 INFO L793 eck$LassoCheckResult]: Loop: 5213#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 5214#L18 assume !(0 == __VERIFIER_assert_~cond#1); 5229#L18-2 assume { :end_inline___VERIFIER_assert } true; 5232#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 5258#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 5257#L18 assume !(0 == __VERIFIER_assert_~cond#1); 5256#L18-2 assume { :end_inline___VERIFIER_assert } true; 5255#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 5254#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 5234#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 5235#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 5213#L36-3 [2021-12-21 22:23:18,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:18,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1334545203, now seen corresponding path program 4 times [2021-12-21 22:23:18,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:18,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879047706] [2021-12-21 22:23:18,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:18,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 22:23:18,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:23:18,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879047706] [2021-12-21 22:23:18,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879047706] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 22:23:18,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757752439] [2021-12-21 22:23:18,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 22:23:18,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:23:18,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:18,591 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 22:23:18,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-12-21 22:23:18,618 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 22:23:18,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 22:23:18,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 22:23:18,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 22:23:18,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 22:23:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 22:23:18,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757752439] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 22:23:18,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 22:23:18,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2021-12-21 22:23:18,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713708342] [2021-12-21 22:23:18,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 22:23:18,794 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-21 22:23:18,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:18,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1426778589, now seen corresponding path program 2 times [2021-12-21 22:23:18,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:18,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465700612] [2021-12-21 22:23:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:18,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:18,802 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:18,808 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:18,876 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:18,876 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:18,876 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:18,876 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:18,876 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:18,876 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:18,876 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:18,876 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:18,876 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-12-21 22:23:18,876 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:18,876 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:18,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:18,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:18,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:18,890 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:18,927 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:18,927 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:18,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:18,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:18,928 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) [2021-12-21 22:23:18,929 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 [2021-12-21 22:23:18,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:18,931 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:18,955 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:18,955 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:18,975 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 [2021-12-21 22:23:18,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:18,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:18,976 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) [2021-12-21 22:23:18,977 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 [2021-12-21 22:23:18,978 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:18,978 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:19,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:19,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:19,003 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) [2021-12-21 22:23:19,004 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 [2021-12-21 22:23:19,005 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:19,005 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:19,363 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:19,368 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-12-21 22:23:19,368 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:19,369 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:19,369 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:19,369 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:19,369 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:19,369 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:19,369 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:19,369 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:19,369 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-12-21 22:23:19,369 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:19,369 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:19,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:19,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:19,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:19,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:19,426 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:19,426 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:19,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:19,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:19,427 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) [2021-12-21 22:23:19,428 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 [2021-12-21 22:23:19,429 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:19,435 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:19,436 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:19,436 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:19,436 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:19,436 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:19,436 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:19,436 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:19,437 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:19,453 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 [2021-12-21 22:23:19,453 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:19,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:19,454 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) [2021-12-21 22:23:19,455 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 [2021-12-21 22:23:19,456 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:19,462 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:19,462 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:19,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:19,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:19,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:19,463 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:19,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:19,465 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:19,467 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 22:23:19,467 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 22:23:19,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:19,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:19,469 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) [2021-12-21 22:23:19,471 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 [2021-12-21 22:23:19,471 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:19,471 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:19,471 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:19,471 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 3*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-12-21 22:23:19,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:19,488 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:19,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:19,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:19,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:19,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:23:19,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 22:23:19,589 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 22:23:19,589 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 485 states and 591 transitions. cyclomatic complexity: 118 Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) [2021-12-21 22:23:19,605 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 485 states and 591 transitions. cyclomatic complexity: 118. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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 499 states and 605 transitions. Complement of second has 7 states. [2021-12-21 22:23:19,606 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 [2021-12-21 22:23:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) [2021-12-21 22:23:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-21 22:23:19,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 29 letters. Loop has 11 letters. [2021-12-21 22:23:19,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:19,606 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 22:23:19,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:19,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:19,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:19,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:19,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:23:19,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 22:23:19,713 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 [2021-12-21 22:23:19,713 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 485 states and 591 transitions. cyclomatic complexity: 118 Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) [2021-12-21 22:23:19,728 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 485 states and 591 transitions. cyclomatic complexity: 118. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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 499 states and 605 transitions. Complement of second has 7 states. [2021-12-21 22:23:19,729 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 [2021-12-21 22:23:19,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) [2021-12-21 22:23:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-21 22:23:19,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 29 letters. Loop has 11 letters. [2021-12-21 22:23:19,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:19,729 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 22:23:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:19,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:19,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:19,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:23:19,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 22:23:19,795 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 [2021-12-21 22:23:19,795 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 485 states and 591 transitions. cyclomatic complexity: 118 Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) [2021-12-21 22:23:19,811 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 485 states and 591 transitions. cyclomatic complexity: 118. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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 888 states and 1043 transitions. Complement of second has 6 states. [2021-12-21 22:23:19,811 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 [2021-12-21 22:23:19,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 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) [2021-12-21 22:23:19,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2021-12-21 22:23:19,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 29 letters. Loop has 11 letters. [2021-12-21 22:23:19,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:19,812 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 40 letters. Loop has 11 letters. [2021-12-21 22:23:19,812 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:19,813 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 29 letters. Loop has 22 letters. [2021-12-21 22:23:19,813 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:19,813 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 888 states and 1043 transitions. [2021-12-21 22:23:19,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 75 [2021-12-21 22:23:19,818 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 888 states to 656 states and 775 transitions. [2021-12-21 22:23:19,818 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-12-21 22:23:19,819 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-12-21 22:23:19,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 656 states and 775 transitions. [2021-12-21 22:23:19,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:19,819 INFO L681 BuchiCegarLoop]: Abstraction has 656 states and 775 transitions. [2021-12-21 22:23:19,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states and 775 transitions. [2021-12-21 22:23:19,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 557. [2021-12-21 22:23:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 557 states have (on average 1.1759425493716338) internal successors, (655), 556 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 655 transitions. [2021-12-21 22:23:19,826 INFO L704 BuchiCegarLoop]: Abstraction has 557 states and 655 transitions. [2021-12-21 22:23:19,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:23:19,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 22:23:19,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-21 22:23:19,826 INFO L87 Difference]: Start difference. First operand 557 states and 655 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:19,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:23:19,911 INFO L93 Difference]: Finished difference Result 581 states and 658 transitions. [2021-12-21 22:23:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 22:23:19,912 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 581 states and 658 transitions. [2021-12-21 22:23:19,914 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-12-21 22:23:19,914 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 581 states to 260 states and 290 transitions. [2021-12-21 22:23:19,914 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-12-21 22:23:19,915 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-12-21 22:23:19,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 260 states and 290 transitions. [2021-12-21 22:23:19,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:19,915 INFO L681 BuchiCegarLoop]: Abstraction has 260 states and 290 transitions. [2021-12-21 22:23:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states and 290 transitions. [2021-12-21 22:23:19,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 244. [2021-12-21 22:23:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 244 states have (on average 1.1229508196721312) internal successors, (274), 243 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 274 transitions. [2021-12-21 22:23:19,917 INFO L704 BuchiCegarLoop]: Abstraction has 244 states and 274 transitions. [2021-12-21 22:23:19,917 INFO L587 BuchiCegarLoop]: Abstraction has 244 states and 274 transitions. [2021-12-21 22:23:19,917 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-21 22:23:19,917 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 244 states and 274 transitions. [2021-12-21 22:23:19,918 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-12-21 22:23:19,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:19,918 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:19,919 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:19,919 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:19,919 INFO L791 eck$LassoCheckResult]: Stem: 9301#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 9302#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 9303#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 9304#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 9308#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 9307#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 9305#L33-1 main_~i~0#1 := 0; 9306#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 9335#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 9315#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 9316#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 9397#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 9484#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 9483#L18 assume !(0 == __VERIFIER_assert_~cond#1); 9482#L18-2 assume { :end_inline___VERIFIER_assert } true; 9481#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 9479#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 9459#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 9369#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 9370#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 9360#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 9356#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 9309#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 9310#L18 assume !(0 == __VERIFIER_assert_~cond#1); 9529#L18-2 assume { :end_inline___VERIFIER_assert } true; 9527#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 9525#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 9524#L18 assume !(0 == __VERIFIER_assert_~cond#1); 9523#L18-2 assume { :end_inline___VERIFIER_assert } true; 9522#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 9358#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 9357#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 9355#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 9353#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 9324#L18 [2021-12-21 22:23:19,919 INFO L793 eck$LassoCheckResult]: Loop: 9324#L18 assume !(0 == __VERIFIER_assert_~cond#1); 9325#L18-2 assume { :end_inline___VERIFIER_assert } true; 9320#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 9321#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 9350#L18 assume !(0 == __VERIFIER_assert_~cond#1); 9327#L18-2 assume { :end_inline___VERIFIER_assert } true; 9328#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 9349#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 9348#L18 assume !(0 == __VERIFIER_assert_~cond#1); 9347#L18-2 assume { :end_inline___VERIFIER_assert } true; 9346#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 9345#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 9344#L18 assume !(0 == __VERIFIER_assert_~cond#1); 9343#L18-2 assume { :end_inline___VERIFIER_assert } true; 9342#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 9341#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 9338#L18 assume !(0 == __VERIFIER_assert_~cond#1); 9340#L18-2 assume { :end_inline___VERIFIER_assert } true; 9339#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 9337#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 9331#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 9332#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 9313#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 9314#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 9354#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 9351#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 9324#L18 [2021-12-21 22:23:19,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:19,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1304386790, now seen corresponding path program 5 times [2021-12-21 22:23:19,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:19,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479646381] [2021-12-21 22:23:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:19,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:19,926 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:19,944 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:19,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:19,946 INFO L85 PathProgramCache]: Analyzing trace with hash 96299068, now seen corresponding path program 4 times [2021-12-21 22:23:19,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:19,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507632459] [2021-12-21 22:23:19,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:19,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:19,954 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:19,968 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:19,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash -96091935, now seen corresponding path program 6 times [2021-12-21 22:23:19,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:19,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792443699] [2021-12-21 22:23:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:19,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:20,061 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 86 proven. 87 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-21 22:23:20,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:23:20,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792443699] [2021-12-21 22:23:20,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792443699] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 22:23:20,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80991316] [2021-12-21 22:23:20,062 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-21 22:23:20,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:23:20,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:20,062 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 22:23:20,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-12-21 22:23:20,096 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-21 22:23:20,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 22:23:20,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 22:23:20,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 95 proven. 72 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 22:23:20,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 22:23:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 95 proven. 72 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 22:23:20,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80991316] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 22:23:20,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 22:23:20,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 17 [2021-12-21 22:23:20,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199638106] [2021-12-21 22:23:20,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 22:23:20,545 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:20,545 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:20,545 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:20,545 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:20,545 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:20,545 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:20,545 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:20,545 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:20,545 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2021-12-21 22:23:20,546 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:20,546 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:20,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:20,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:20,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:20,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:20,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:20,624 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:20,624 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:20,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:20,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:20,625 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) [2021-12-21 22:23:20,630 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 [2021-12-21 22:23:20,631 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:20,631 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:20,638 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:20,638 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:20,653 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 [2021-12-21 22:23:20,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:20,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:20,654 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) [2021-12-21 22:23:20,655 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 [2021-12-21 22:23:20,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:20,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:20,663 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:20,663 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:20,679 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 [2021-12-21 22:23:20,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:20,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:20,680 INFO L229 MonitoredProcess]: Starting monitored process 58 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) [2021-12-21 22:23:20,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-12-21 22:23:20,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:20,682 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:20,694 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:20,694 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:20,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-12-21 22:23:20,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:20,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:20,710 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) [2021-12-21 22:23:20,711 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 [2021-12-21 22:23:20,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:20,713 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:20,720 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:20,720 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:20,735 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-12-21 22:23:20,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:20,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:20,737 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) [2021-12-21 22:23:20,738 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 [2021-12-21 22:23:20,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:20,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:20,762 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 [2021-12-21 22:23:20,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:20,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:20,763 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) [2021-12-21 22:23:20,763 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 [2021-12-21 22:23:20,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:20,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:21,127 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:21,132 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 [2021-12-21 22:23:21,132 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:21,132 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:21,132 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:21,132 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:21,132 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:21,132 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:21,132 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:21,132 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:21,132 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2021-12-21 22:23:21,132 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:21,132 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:21,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:21,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:21,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:21,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:21,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:21,219 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:21,220 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:21,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:21,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:21,221 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) [2021-12-21 22:23:21,221 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 [2021-12-21 22:23:21,222 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:21,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:21,229 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:21,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:21,229 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-21 22:23:21,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:21,230 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-21 22:23:21,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:21,232 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:21,248 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 [2021-12-21 22:23:21,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:21,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:21,249 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) [2021-12-21 22:23:21,250 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 [2021-12-21 22:23:21,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:21,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:21,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:21,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:21,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:21,257 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:21,257 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:21,257 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:21,258 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:21,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:21,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:21,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:21,274 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) [2021-12-21 22:23:21,275 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 [2021-12-21 22:23:21,276 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:21,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:21,282 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:21,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:21,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:21,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:21,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:21,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:21,283 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:21,298 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 [2021-12-21 22:23:21,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:21,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:21,299 INFO L229 MonitoredProcess]: Starting monitored process 65 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) [2021-12-21 22:23:21,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-12-21 22:23:21,303 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:21,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:21,309 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:21,309 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:21,309 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:21,309 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:21,310 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:21,310 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:21,311 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:21,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:21,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:21,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:21,327 INFO L229 MonitoredProcess]: Starting monitored process 66 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) [2021-12-21 22:23:21,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-12-21 22:23:21,329 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:21,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:21,335 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:21,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:21,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:21,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:21,337 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:21,337 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:21,339 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:21,342 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-12-21 22:23:21,342 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 22:23:21,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:21,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:21,343 INFO L229 MonitoredProcess]: Starting monitored process 67 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) [2021-12-21 22:23:21,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-12-21 22:23:21,344 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:21,344 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:21,344 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:21,345 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0#1, ULTIMATE.start_main_~i~0#1) = 7*ULTIMATE.start_main_~n~0#1 - 4*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-21 22:23:21,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:21,360 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:21,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:21,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:21,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:21,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 22:23:21,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:21,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 22:23:21,583 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 [2021-12-21 22:23:21,583 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 244 states and 274 transitions. cyclomatic complexity: 38 Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:21,618 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 244 states and 274 transitions. cyclomatic complexity: 38. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 539 states and 617 transitions. Complement of second has 8 states. [2021-12-21 22:23:21,619 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 [2021-12-21 22:23:21,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:21,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2021-12-21 22:23:21,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 34 letters. Loop has 26 letters. [2021-12-21 22:23:21,619 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:21,619 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 60 letters. Loop has 26 letters. [2021-12-21 22:23:21,620 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:21,620 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 34 letters. Loop has 52 letters. [2021-12-21 22:23:21,620 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:21,620 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 539 states and 617 transitions. [2021-12-21 22:23:21,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:23:21,623 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 539 states to 347 states and 393 transitions. [2021-12-21 22:23:21,624 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-12-21 22:23:21,624 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-12-21 22:23:21,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 347 states and 393 transitions. [2021-12-21 22:23:21,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:21,624 INFO L681 BuchiCegarLoop]: Abstraction has 347 states and 393 transitions. [2021-12-21 22:23:21,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states and 393 transitions. [2021-12-21 22:23:21,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 316. [2021-12-21 22:23:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 316 states have (on average 1.1265822784810127) internal successors, (356), 315 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 356 transitions. [2021-12-21 22:23:21,628 INFO L704 BuchiCegarLoop]: Abstraction has 316 states and 356 transitions. [2021-12-21 22:23:21,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:23:21,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-21 22:23:21,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-12-21 22:23:21,628 INFO L87 Difference]: Start difference. First operand 316 states and 356 transitions. Second operand has 17 states, 17 states have (on average 4.9411764705882355) internal successors, (84), 17 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:23:21,904 INFO L93 Difference]: Finished difference Result 508 states and 557 transitions. [2021-12-21 22:23:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 22:23:21,905 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 508 states and 557 transitions. [2021-12-21 22:23:21,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:23:21,908 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 508 states to 388 states and 429 transitions. [2021-12-21 22:23:21,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-12-21 22:23:21,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-12-21 22:23:21,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 388 states and 429 transitions. [2021-12-21 22:23:21,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:21,909 INFO L681 BuchiCegarLoop]: Abstraction has 388 states and 429 transitions. [2021-12-21 22:23:21,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states and 429 transitions. [2021-12-21 22:23:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 355. [2021-12-21 22:23:21,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 355 states have (on average 1.115492957746479) internal successors, (396), 354 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 396 transitions. [2021-12-21 22:23:21,912 INFO L704 BuchiCegarLoop]: Abstraction has 355 states and 396 transitions. [2021-12-21 22:23:21,912 INFO L587 BuchiCegarLoop]: Abstraction has 355 states and 396 transitions. [2021-12-21 22:23:21,912 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-21 22:23:21,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 355 states and 396 transitions. [2021-12-21 22:23:21,913 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:23:21,913 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:21,913 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:21,914 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 22:23:21,914 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-21 22:23:21,914 INFO L791 eck$LassoCheckResult]: Stem: 11519#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 11520#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 11521#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 11522#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 11526#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 11525#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 11523#L33-1 main_~i~0#1 := 0; 11524#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 11545#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 11612#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 11568#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 11569#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 11742#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 11741#L18 assume !(0 == __VERIFIER_assert_~cond#1); 11740#L18-2 assume { :end_inline___VERIFIER_assert } true; 11739#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 11714#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 11712#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 11710#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 11531#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 11532#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 11535#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 11536#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 11866#L18 assume !(0 == __VERIFIER_assert_~cond#1); 11864#L18-2 assume { :end_inline___VERIFIER_assert } true; 11862#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 11856#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 11855#L18 assume !(0 == __VERIFIER_assert_~cond#1); 11853#L18-2 assume { :end_inline___VERIFIER_assert } true; 11851#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 11843#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 11797#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 11779#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 11777#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 11776#L18 assume !(0 == __VERIFIER_assert_~cond#1); 11775#L18-2 assume { :end_inline___VERIFIER_assert } true; 11596#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 11594#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 11595#L18 assume !(0 == __VERIFIER_assert_~cond#1); 11766#L18-2 assume { :end_inline___VERIFIER_assert } true; 11590#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 11588#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 11589#L18 assume !(0 == __VERIFIER_assert_~cond#1); 11758#L18-2 assume { :end_inline___VERIFIER_assert } true; 11757#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 11583#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 11577#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 11572#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 11573#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 11552#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 11551#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 11550#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 11528#L18 [2021-12-21 22:23:21,914 INFO L793 eck$LassoCheckResult]: Loop: 11528#L18 assume !(0 == __VERIFIER_assert_~cond#1); 11540#L18-2 assume { :end_inline___VERIFIER_assert } true; 11537#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 11527#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 11528#L18 [2021-12-21 22:23:21,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash -586107213, now seen corresponding path program 7 times [2021-12-21 22:23:21,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:21,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436404035] [2021-12-21 22:23:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:21,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:21,923 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:21,933 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:21,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:21,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2619672, now seen corresponding path program 1 times [2021-12-21 22:23:21,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:21,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273908739] [2021-12-21 22:23:21,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:21,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:21,935 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:21,937 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:21,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:21,937 INFO L85 PathProgramCache]: Analyzing trace with hash -474347830, now seen corresponding path program 8 times [2021-12-21 22:23:21,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:21,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306199950] [2021-12-21 22:23:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:21,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:21,946 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:21,955 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:21,981 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:21,981 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:21,981 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:21,981 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:21,981 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:21,981 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:21,981 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:21,981 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:21,981 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2021-12-21 22:23:21,981 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:21,981 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:21,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:21,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:22,126 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:22,126 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:22,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:22,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:22,127 INFO L229 MonitoredProcess]: Starting monitored process 68 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) [2021-12-21 22:23:22,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-12-21 22:23:22,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:22,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:22,137 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:22,138 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:22,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:22,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:22,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:22,154 INFO L229 MonitoredProcess]: Starting monitored process 69 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) [2021-12-21 22:23:22,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-12-21 22:23:22,156 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:22,156 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:22,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-12-21 22:23:22,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:22,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:22,180 INFO L229 MonitoredProcess]: Starting monitored process 70 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) [2021-12-21 22:23:22,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-12-21 22:23:22,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:22,182 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:22,771 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:22,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2021-12-21 22:23:22,776 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:22,776 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:22,776 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:22,776 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:22,776 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:22,776 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:22,776 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:22,776 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:22,776 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2021-12-21 22:23:22,776 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:22,776 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:22,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:22,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:22,927 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:22,928 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:22,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:22,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:22,929 INFO L229 MonitoredProcess]: Starting monitored process 71 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) [2021-12-21 22:23:22,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-12-21 22:23:22,931 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:22,937 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:22,937 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:22,938 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:22,938 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:22,938 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:22,938 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:22,938 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:22,939 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:22,954 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2021-12-21 22:23:22,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:22,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:22,956 INFO L229 MonitoredProcess]: Starting monitored process 72 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) [2021-12-21 22:23:22,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-12-21 22:23:22,958 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-21 22:23:22,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:22,965 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:22,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:22,965 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-12-21 22:23:22,965 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:22,969 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-12-21 22:23:22,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:22,975 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:22,978 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 22:23:22,978 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 22:23:22,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:22,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:22,979 INFO L229 MonitoredProcess]: Starting monitored process 73 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) [2021-12-21 22:23:22,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-12-21 22:23:22,981 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:22,981 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:22,981 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:22,981 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~k~0#1) = 1*ULTIMATE.start_main_~j~0#1 - 1*ULTIMATE.start_main_~k~0#1 Supporting invariants [] [2021-12-21 22:23:22,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:22,998 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:23,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:23,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:23,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:23,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:23:23,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:23,124 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 22:23:23,124 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 355 states and 396 transitions. cyclomatic complexity: 54 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) [2021-12-21 22:23:23,139 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 355 states and 396 transitions. cyclomatic complexity: 54. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) Result 410 states and 453 transitions. Complement of second has 7 states. [2021-12-21 22:23:23,139 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 [2021-12-21 22:23:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) [2021-12-21 22:23:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-21 22:23:23,140 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 52 letters. Loop has 4 letters. [2021-12-21 22:23:23,140 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:23,140 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 22:23:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:23,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:23,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:23,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:23:23,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:23,240 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 [2021-12-21 22:23:23,240 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 355 states and 396 transitions. cyclomatic complexity: 54 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) [2021-12-21 22:23:23,253 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 355 states and 396 transitions. cyclomatic complexity: 54. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) Result 410 states and 453 transitions. Complement of second has 7 states. [2021-12-21 22:23:23,254 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 [2021-12-21 22:23:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) [2021-12-21 22:23:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-21 22:23:23,254 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 52 letters. Loop has 4 letters. [2021-12-21 22:23:23,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:23,254 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 22:23:23,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:23,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:23,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:23,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:23:23,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:23,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:23,353 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 [2021-12-21 22:23:23,353 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 355 states and 396 transitions. cyclomatic complexity: 54 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) [2021-12-21 22:23:23,376 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 355 states and 396 transitions. cyclomatic complexity: 54. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) Result 610 states and 658 transitions. Complement of second has 6 states. [2021-12-21 22:23:23,377 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 [2021-12-21 22:23:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 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) [2021-12-21 22:23:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2021-12-21 22:23:23,377 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 52 letters. Loop has 4 letters. [2021-12-21 22:23:23,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:23,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 56 letters. Loop has 4 letters. [2021-12-21 22:23:23,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:23,378 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 52 letters. Loop has 8 letters. [2021-12-21 22:23:23,378 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:23,378 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 610 states and 658 transitions. [2021-12-21 22:23:23,380 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:23:23,381 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 610 states to 0 states and 0 transitions. [2021-12-21 22:23:23,381 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-21 22:23:23,381 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-21 22:23:23,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-21 22:23:23,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:23:23,381 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:23:23,381 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:23:23,381 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:23:23,381 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-12-21 22:23:23,381 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-21 22:23:23,381 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:23:23,382 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-21 22:23:23,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 10:23:23 BoogieIcfgContainer [2021-12-21 22:23:23,387 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 22:23:23,387 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 22:23:23,387 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 22:23:23,387 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 22:23:23,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:23:11" (3/4) ... [2021-12-21 22:23:23,390 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 22:23:23,390 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 22:23:23,390 INFO L158 Benchmark]: Toolchain (without parser) took 12785.04ms. Allocated memory was 90.2MB in the beginning and 136.3MB in the end (delta: 46.1MB). Free memory was 59.3MB in the beginning and 38.4MB in the end (delta: 20.9MB). Peak memory consumption was 65.9MB. Max. memory is 16.1GB. [2021-12-21 22:23:23,391 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 47.5MB in the beginning and 47.4MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:23:23,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.70ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 59.3MB in the beginning and 88.9MB in the end (delta: -29.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 22:23:23,391 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.51ms. Allocated memory is still 113.2MB. Free memory was 88.9MB in the beginning and 87.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:23:23,391 INFO L158 Benchmark]: Boogie Preprocessor took 14.44ms. Allocated memory is still 113.2MB. Free memory was 87.4MB in the beginning and 86.4MB in the end (delta: 957.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:23:23,391 INFO L158 Benchmark]: RCFGBuilder took 189.76ms. Allocated memory is still 113.2MB. Free memory was 86.4MB in the beginning and 76.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 22:23:23,392 INFO L158 Benchmark]: BuchiAutomizer took 12346.68ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 76.3MB in the beginning and 38.4MB in the end (delta: 37.9MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. [2021-12-21 22:23:23,392 INFO L158 Benchmark]: Witness Printer took 2.73ms. Allocated memory is still 136.3MB. Free memory is still 38.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:23:23,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory was 47.5MB in the beginning and 47.4MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.70ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 59.3MB in the beginning and 88.9MB in the end (delta: -29.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.51ms. Allocated memory is still 113.2MB. Free memory was 88.9MB in the beginning and 87.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.44ms. Allocated memory is still 113.2MB. Free memory was 87.4MB in the beginning and 86.4MB in the end (delta: 957.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 189.76ms. Allocated memory is still 113.2MB. Free memory was 86.4MB in the beginning and 76.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 12346.68ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 76.3MB in the beginning and 38.4MB in the end (delta: 37.9MB). Peak memory consumption was 62.7MB. Max. memory is 16.1GB. * Witness Printer took 2.73ms. Allocated memory is still 136.3MB. Free memory is still 38.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 -1 * j + n and consists of 7 locations. One deterministic module has affine ranking function -1 * i + 1 and consists of 8 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 7 * n + -4 * i and consists of 5 locations. One nondeterministic module has affine ranking function -2 * j + 5 * i and consists of 6 locations. One nondeterministic module has affine ranking function -1 * j + 3 * i 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 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.2s and 12 iterations. TraceHistogramMax:7. Analysis of lassos took 8.4s. Construction of modules took 0.5s. Büchi inclusion checks took 3.0s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 14. Automata minimization 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 1227 StatesRemovedByMinimization, 13 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 485 states and ocurred in iteration 8. Nontrivial modules had stage [6, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 55/73 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 605 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 590 mSDsluCounter, 767 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 449 mSDsCounter, 250 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1094 IncrementalHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 250 mSolverCounterUnsat, 318 mSDtfsCounter, 1094 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT4 conc0 concLT4 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital40 mio100 ax100 hnf100 lsp91 ukn98 mio100 lsp100 div100 bol100 ite100 ukn100 eq144 hnf94 smp98 dnf130 smp96 tf104 neg97 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 26ms VariablesStem: 0 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-21 22:23:23,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:23,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:23,828 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-12-21 22:23:24,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-12-21 22:23:24,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-12-21 22:23:24,429 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE