./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-lit/gr2006.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-lit/gr2006.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 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 22:23:24,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 22:23:24,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 22:23:24,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 22:23:24,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 22:23:24,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 22:23:24,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 22:23:24,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 22:23:24,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 22:23:24,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 22:23:24,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 22:23:24,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 22:23:24,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 22:23:24,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 22:23:24,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 22:23:24,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 22:23:24,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 22:23:24,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 22:23:24,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 22:23:24,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 22:23:24,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 22:23:24,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 22:23:24,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 22:23:24,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 22:23:24,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 22:23:24,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 22:23:24,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 22:23:24,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 22:23:24,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 22:23:24,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 22:23:24,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 22:23:24,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 22:23:24,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 22:23:24,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 22:23:24,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 22:23:24,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 22:23:24,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 22:23:24,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 22:23:24,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 22:23:24,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 22:23:24,535 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 22:23:24,536 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-21 22:23:24,566 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 22:23:24,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 22:23:24,567 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 22:23:24,567 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 22:23:24,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 22:23:24,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 22:23:24,568 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 22:23:24,568 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-21 22:23:24,568 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-21 22:23:24,569 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-21 22:23:24,569 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-21 22:23:24,569 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-21 22:23:24,570 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-21 22:23:24,570 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 22:23:24,570 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 22:23:24,570 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 22:23:24,570 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 22:23:24,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 22:23:24,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 22:23:24,571 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-21 22:23:24,571 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-21 22:23:24,571 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-21 22:23:24,571 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 22:23:24,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 22:23:24,571 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-21 22:23:24,571 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 22:23:24,572 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-21 22:23:24,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 22:23:24,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 22:23:24,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 22:23:24,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 22:23:24,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 22:23:24,573 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-21 22:23:24,573 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 [2021-12-21 22:23:24,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 22:23:24,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 22:23:24,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 22:23:24,760 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 22:23:24,760 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 22:23:24,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gr2006.i [2021-12-21 22:23:24,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21850a106/c91fe3b067f640f8ad4be0a5d150e237/FLAG3c6d70d11 [2021-12-21 22:23:25,191 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 22:23:25,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gr2006.i [2021-12-21 22:23:25,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21850a106/c91fe3b067f640f8ad4be0a5d150e237/FLAG3c6d70d11 [2021-12-21 22:23:25,231 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21850a106/c91fe3b067f640f8ad4be0a5d150e237 [2021-12-21 22:23:25,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 22:23:25,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 22:23:25,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 22:23:25,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 22:23:25,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 22:23:25,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:23:25" (1/1) ... [2021-12-21 22:23:25,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7156ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25, skipping insertion in model container [2021-12-21 22:23:25,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:23:25" (1/1) ... [2021-12-21 22:23:25,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 22:23:25,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 22:23:25,465 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-lit/gr2006.i[895,908] [2021-12-21 22:23:25,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:23:25,474 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 22:23:25,481 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-lit/gr2006.i[895,908] [2021-12-21 22:23:25,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 22:23:25,490 INFO L208 MainTranslator]: Completed translation [2021-12-21 22:23:25,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25 WrapperNode [2021-12-21 22:23:25,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 22:23:25,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 22:23:25,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 22:23:25,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 22:23:25,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25" (1/1) ... [2021-12-21 22:23:25,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25" (1/1) ... [2021-12-21 22:23:25,509 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2021-12-21 22:23:25,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 22:23:25,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 22:23:25,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 22:23:25,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 22:23:25,515 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25" (1/1) ... [2021-12-21 22:23:25,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25" (1/1) ... [2021-12-21 22:23:25,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25" (1/1) ... [2021-12-21 22:23:25,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25" (1/1) ... [2021-12-21 22:23:25,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25" (1/1) ... [2021-12-21 22:23:25,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25" (1/1) ... [2021-12-21 22:23:25,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25" (1/1) ... [2021-12-21 22:23:25,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 22:23:25,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 22:23:25,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 22:23:25,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 22:23:25,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25" (1/1) ... [2021-12-21 22:23:25,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:25,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:25,542 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 22:23:25,557 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 22:23:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 22:23:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 22:23:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 22:23:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 22:23:25,621 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 22:23:25,622 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 22:23:25,709 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 22:23:25,714 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 22:23:25,716 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 22:23:25,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:23:25 BoogieIcfgContainer [2021-12-21 22:23:25,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 22:23:25,719 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-21 22:23:25,719 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-21 22:23:25,722 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-21 22:23:25,722 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:23:25,722 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.12 10:23:25" (1/3) ... [2021-12-21 22:23:25,723 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57a5c366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:23:25, skipping insertion in model container [2021-12-21 22:23:25,723 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:23:25,723 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:23:25" (2/3) ... [2021-12-21 22:23:25,724 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57a5c366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.12 10:23:25, skipping insertion in model container [2021-12-21 22:23:25,724 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-21 22:23:25,724 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:23:25" (3/3) ... [2021-12-21 22:23:25,725 INFO L388 chiAutomizerObserver]: Analyzing ICFG gr2006.i [2021-12-21 22:23:25,752 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-21 22:23:25,753 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-21 22:23:25,753 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-21 22:23:25,753 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-21 22:23:25,753 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-21 22:23:25,753 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-21 22:23:25,753 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-21 22:23:25,753 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-21 22:23:25,762 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:25,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 22:23:25,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:25,773 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:25,777 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 22:23:25,777 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:23:25,777 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-21 22:23:25,778 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:25,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 22:23:25,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:25,780 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:25,780 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-21 22:23:25,780 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:23:25,785 INFO L791 eck$LassoCheckResult]: Stem: 5#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); 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 8#L28-2true [2021-12-21 22:23:25,785 INFO L793 eck$LassoCheckResult]: Loop: 8#L28-2true assume !false; 7#L29true assume !(main_~x~0#1 < 50);main_#t~post2#1 := main_~y~0#1;main_~y~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 13#L29-2true assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 8#L28-2true [2021-12-21 22:23:25,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-21 22:23:25,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:25,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95123521] [2021-12-21 22:23:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:25,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:25,865 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:25,894 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:25,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:25,897 INFO L85 PathProgramCache]: Analyzing trace with hash 40880, now seen corresponding path program 1 times [2021-12-21 22:23:25,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:25,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498276266] [2021-12-21 22:23:25,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:25,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:25,915 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:25,924 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:25,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:25,925 INFO L85 PathProgramCache]: Analyzing trace with hash 28699822, now seen corresponding path program 1 times [2021-12-21 22:23:25,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:25,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828490774] [2021-12-21 22:23:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:25,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:26,020 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 22:23:26,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:23:26,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828490774] [2021-12-21 22:23:26,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828490774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 22:23:26,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 22:23:26,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 22:23:26,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37361534] [2021-12-21 22:23:26,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 22:23:26,064 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:26,065 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:26,065 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:26,065 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:26,065 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:26,065 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:26,066 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:26,066 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:26,066 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration1_Loop [2021-12-21 22:23:26,066 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:26,066 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:26,092 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 22:23:26,096 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 22:23:26,098 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 22:23:26,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:26,181 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:26,181 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:26,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:26,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:26,200 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 22:23:26,220 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 22:23:26,221 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:26,221 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:26,232 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:26,232 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2#1=0} Honda state: {ULTIMATE.start_main_#t~post2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:26,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-21 22:23:26,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:26,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:26,250 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 22:23:26,251 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 22:23:26,252 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:26,252 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:26,259 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:26,260 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:26,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-21 22:23:26,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:26,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:26,279 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 22:23:26,280 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 22:23:26,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:26,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:26,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:26,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:26,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:26,313 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 22:23:26,314 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 22:23:26,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:26,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:26,392 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:26,399 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 22:23:26,399 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:26,399 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:26,399 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:26,399 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:26,399 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:26,399 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:26,399 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:26,399 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:26,399 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration1_Loop [2021-12-21 22:23:26,399 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:26,399 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:26,400 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 22:23:26,406 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 22:23:26,416 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 22:23:26,424 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 22:23:26,475 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:26,491 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:26,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:26,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:26,494 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 22:23:26,520 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 22:23:26,523 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 22:23:26,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:26,531 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:26,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:26,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:26,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:26,533 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:26,533 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:26,548 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:26,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:26,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:26,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:26,565 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 22:23:26,566 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 22:23:26,567 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 22:23:26,574 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:26,574 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:26,575 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:26,575 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:26,575 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:26,575 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:26,575 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:26,579 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:26,597 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 22:23:26,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:26,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:26,598 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 22:23:26,600 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 22:23:26,602 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 22:23:26,609 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:26,609 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:26,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:26,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:26,609 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:26,611 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:26,611 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:26,624 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:26,641 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 22:23:26,641 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-21 22:23:26,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:26,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:26,643 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 22:23:26,644 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 22:23:26,677 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:26,677 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:26,677 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:26,677 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-21 22:23:26,695 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 22:23:26,698 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:26,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:26,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:26,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:26,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:23:26,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:26,770 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 22:23:26,789 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-21 22:23:26,790 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 22:23:26,823 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 39 states and 50 transitions. Complement of second has 8 states. [2021-12-21 22:23:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-21 22:23:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 22:23:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-12-21 22:23:26,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2021-12-21 22:23:26,829 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:26,829 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-21 22:23:26,829 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:26,829 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2021-12-21 22:23:26,829 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:26,830 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2021-12-21 22:23:26,832 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 22:23:26,833 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 10 states and 13 transitions. [2021-12-21 22:23:26,834 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-12-21 22:23:26,834 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-21 22:23:26,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2021-12-21 22:23:26,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:26,835 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-21 22:23:26,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2021-12-21 22:23:26,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-21 22:23:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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 22:23:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2021-12-21 22:23:26,850 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2021-12-21 22:23:26,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:23:26,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 22:23:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 22:23:26,852 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 22:23:26,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:23:26,859 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-12-21 22:23:26,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 22:23:26,860 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-12-21 22:23:26,860 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 22:23:26,860 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2021-12-21 22:23:26,861 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-12-21 22:23:26,861 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-12-21 22:23:26,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2021-12-21 22:23:26,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:23:26,861 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-12-21 22:23:26,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2021-12-21 22:23:26,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-12-21 22:23:26,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 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 22:23:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-12-21 22:23:26,862 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-12-21 22:23:26,862 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-12-21 22:23:26,862 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-21 22:23:26,863 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2021-12-21 22:23:26,863 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 22:23:26,863 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:26,863 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:26,863 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-21 22:23:26,863 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:23:26,864 INFO L791 eck$LassoCheckResult]: Stem: 114#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); 115#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 120#L28-2 assume !false; 116#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 117#L29-2 [2021-12-21 22:23:26,864 INFO L793 eck$LassoCheckResult]: Loop: 117#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 118#L28-2 assume !false; 119#L29 assume !(main_~x~0#1 < 50);main_#t~post2#1 := main_~y~0#1;main_~y~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 117#L29-2 [2021-12-21 22:23:26,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:26,864 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-12-21 22:23:26,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:26,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398875847] [2021-12-21 22:23:26,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:26,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:26,894 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:26,903 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:26,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:26,906 INFO L85 PathProgramCache]: Analyzing trace with hash 51290, now seen corresponding path program 2 times [2021-12-21 22:23:26,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:26,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553638894] [2021-12-21 22:23:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:26,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:26,914 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:26,916 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:26,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:26,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1810665941, now seen corresponding path program 1 times [2021-12-21 22:23:26,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:26,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218215000] [2021-12-21 22:23:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:26,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:26,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:23:26,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218215000] [2021-12-21 22:23:26,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218215000] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 22:23:26,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740609374] [2021-12-21 22:23:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:26,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:23:26,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:26,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 22:23:26,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 22:23:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:26,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 22:23:26,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:26,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 22:23:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:27,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740609374] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 22:23:27,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 22:23:27,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-12-21 22:23:27,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235559922] [2021-12-21 22:23:27,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 22:23:27,018 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:27,019 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:27,019 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:27,019 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:27,019 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:27,019 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,019 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:27,019 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:27,019 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration2_Loop [2021-12-21 22:23:27,019 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:27,019 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:27,020 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 22:23:27,022 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 22:23:27,026 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 22:23:27,030 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 22:23:27,052 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:27,052 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:27,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:27,053 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 22:23:27,054 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 22:23:27,056 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:27,056 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:27,077 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:27,077 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:27,113 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 22:23:27,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:27,128 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 22:23:27,204 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 22:23:27,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:27,206 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:27,241 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 22:23:27,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:27,256 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 22:23:27,273 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 22:23:27,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:27,275 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:27,298 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:27,298 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=49} Honda state: {ULTIMATE.start_main_~x~0#1=49} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [5, 1, 9] Nus: [0, 1] [2021-12-21 22:23:27,313 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 22:23:27,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:27,315 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 22:23:27,315 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 22:23:27,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:27,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:27,353 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 22:23:27,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:27,355 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 22:23:27,356 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 22:23:27,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:27,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:27,386 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:27,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:27,391 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:27,392 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:27,392 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:27,392 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:27,392 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:27,392 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,392 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:27,392 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:27,392 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration2_Loop [2021-12-21 22:23:27,392 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:27,392 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:27,393 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 22:23:27,398 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 22:23:27,402 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 22:23:27,406 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 22:23:27,438 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:27,438 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:27,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:27,440 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 22:23:27,441 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 22:23:27,442 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 22:23:27,449 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:27,449 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:27,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:27,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:27,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:27,449 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:27,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:27,464 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:27,481 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 22:23:27,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:27,482 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 22:23:27,483 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 22:23:27,484 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 22:23:27,490 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:27,490 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:27,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:27,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:27,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:27,491 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:27,491 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:27,506 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:27,523 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 22:23:27,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:27,524 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 22:23:27,525 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 22:23:27,527 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 22:23:27,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:27,533 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:27,533 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:27,533 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:27,533 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:27,534 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:27,534 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:27,536 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:27,539 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 22:23:27,539 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 22:23:27,539 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:27,541 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 22:23:27,541 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 22:23:27,542 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:27,542 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:27,543 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:27,543 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2021-12-21 22:23:27,560 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 22:23:27,561 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:27,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:27,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:27,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:27,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:23:27,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:27,635 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 22:23:27,635 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 22:23:27,635 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:27,642 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 16 transitions. Complement of second has 5 states. [2021-12-21 22:23:27,643 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 22:23:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:27,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-12-21 22:23:27,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 3 letters. [2021-12-21 22:23:27,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:27,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 3 letters. [2021-12-21 22:23:27,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:27,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 6 letters. [2021-12-21 22:23:27,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:27,644 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2021-12-21 22:23:27,644 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 22:23:27,645 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2021-12-21 22:23:27,645 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-12-21 22:23:27,645 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-12-21 22:23:27,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2021-12-21 22:23:27,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:27,645 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-12-21 22:23:27,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2021-12-21 22:23:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-21 22:23:27,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 22:23:27,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-12-21 22:23:27,646 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-12-21 22:23:27,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:23:27,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 22:23:27,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-21 22:23:27,646 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) 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 22:23:27,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:23:27,673 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-12-21 22:23:27,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 22:23:27,674 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2021-12-21 22:23:27,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-21 22:23:27,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 18 transitions. [2021-12-21 22:23:27,675 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-12-21 22:23:27,675 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-21 22:23:27,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2021-12-21 22:23:27,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:23:27,676 INFO L681 BuchiCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-12-21 22:23:27,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2021-12-21 22:23:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-12-21 22:23:27,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 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 22:23:27,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-12-21 22:23:27,678 INFO L704 BuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-12-21 22:23:27,678 INFO L587 BuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-12-21 22:23:27,678 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-21 22:23:27,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2021-12-21 22:23:27,678 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-21 22:23:27,678 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:27,678 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:27,679 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2021-12-21 22:23:27,679 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:23:27,679 INFO L791 eck$LassoCheckResult]: Stem: 249#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); 250#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 253#L28-2 assume !false; 251#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 252#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 254#L28-2 assume !false; 264#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 263#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 262#L28-2 assume !false; 261#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 260#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 259#L28-2 assume !false; 258#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 256#L29-2 [2021-12-21 22:23:27,679 INFO L793 eck$LassoCheckResult]: Loop: 256#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 257#L28-2 assume !false; 255#L29 assume !(main_~x~0#1 < 50);main_#t~post2#1 := main_~y~0#1;main_~y~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 256#L29-2 [2021-12-21 22:23:27,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:27,680 INFO L85 PathProgramCache]: Analyzing trace with hash -227870477, now seen corresponding path program 1 times [2021-12-21 22:23:27,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:27,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874797572] [2021-12-21 22:23:27,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:27,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:27,713 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:27,721 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:27,721 INFO L85 PathProgramCache]: Analyzing trace with hash 51290, now seen corresponding path program 3 times [2021-12-21 22:23:27,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:27,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056516804] [2021-12-21 22:23:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:27,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:27,724 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:27,726 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:27,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:27,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1853936168, now seen corresponding path program 2 times [2021-12-21 22:23:27,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:27,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759066483] [2021-12-21 22:23:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:27,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:27,740 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 22:23:27,765 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:27,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 22:23:27,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759066483] [2021-12-21 22:23:27,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759066483] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 22:23:27,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012485422] [2021-12-21 22:23:27,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 22:23:27,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 22:23:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:27,767 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 22:23:27,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-21 22:23:27,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 22:23:27,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 22:23:27,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 22:23:27,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:27,830 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:27,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 22:23:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 22:23:27,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012485422] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 22:23:27,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 22:23:27,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2021-12-21 22:23:27,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489694947] [2021-12-21 22:23:27,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 22:23:27,901 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:27,901 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:27,901 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:27,901 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:27,901 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:27,901 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,901 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:27,901 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:27,901 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration3_Loop [2021-12-21 22:23:27,901 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:27,901 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:27,902 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 22:23:27,905 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 22:23:27,907 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 22:23:27,910 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 22:23:27,930 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:27,930 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:27,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:27,931 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 22:23:27,932 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 22:23:27,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:27,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:27,963 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 22:23:27,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:27,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:27,965 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 22:23:27,966 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 22:23:27,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:27,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:27,990 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:27,990 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=49} Honda state: {ULTIMATE.start_main_~x~0#1=49} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [5, 1, 9] Nus: [0, 1] [2021-12-21 22:23:28,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:28,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,011 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 22:23:28,012 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 22:23:28,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:28,014 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:28,028 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:28,029 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2#1=0} Honda state: {ULTIMATE.start_main_#t~post2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:28,044 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 22:23:28,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,046 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 22:23:28,046 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 22:23:28,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:28,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:28,113 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 22:23:28,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,115 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 22:23:28,116 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 22:23:28,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:28,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:28,146 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:28,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-12-21 22:23:28,149 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:28,150 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:28,150 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:28,150 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:28,150 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:28,150 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,150 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:28,150 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:28,150 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration3_Loop [2021-12-21 22:23:28,150 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:28,150 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:28,151 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 22:23:28,163 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 22:23:28,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-21 22:23:28,169 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 22:23:28,191 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:28,191 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:28,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,208 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 22:23:28,209 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 22:23:28,210 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 22:23:28,216 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:28,216 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:28,216 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:28,216 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:28,216 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:28,217 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:28,217 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:28,231 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:28,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-12-21 22:23:28,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,259 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 22:23:28,260 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 22:23:28,260 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 22:23:28,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:28,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:28,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:28,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:28,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:28,267 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:28,267 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:28,268 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:28,286 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 22:23:28,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,287 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 22:23:28,289 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 22:23:28,290 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 22:23:28,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:28,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:28,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:28,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:28,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:28,298 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:28,298 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:28,302 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:28,304 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 22:23:28,304 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 22:23:28,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,306 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 22:23:28,307 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 22:23:28,308 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:28,308 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:28,308 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:28,308 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2021-12-21 22:23:28,325 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 22:23:28,326 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:28,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:28,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:28,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:28,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:23:28,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:28,411 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 22:23:28,412 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 22:23:28,412 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:23:28,419 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 22:23:28,422 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 18 states and 19 transitions. Complement of second has 5 states. [2021-12-21 22:23:28,422 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 22:23:28,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:23:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-21 22:23:28,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2021-12-21 22:23:28,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:28,423 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 22:23:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:28,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:28,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:28,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:23:28,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:28,471 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 22:23:28,472 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 22:23:28,472 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:23:28,477 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 18 states and 19 transitions. Complement of second has 5 states. [2021-12-21 22:23:28,477 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 22:23:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:23:28,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2021-12-21 22:23:28,477 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2021-12-21 22:23:28,478 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:28,478 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-21 22:23:28,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:28,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:28,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:28,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:23:28,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:28,525 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 22:23:28,526 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 22:23:28,526 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:23:28,532 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 25 states and 27 transitions. Complement of second has 4 states. [2021-12-21 22:23:28,533 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 22:23:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:23:28,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-12-21 22:23:28,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 3 letters. [2021-12-21 22:23:28,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:28,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 16 letters. Loop has 3 letters. [2021-12-21 22:23:28,534 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:28,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 6 letters. [2021-12-21 22:23:28,534 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:28,534 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2021-12-21 22:23:28,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 22:23:28,535 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 21 transitions. [2021-12-21 22:23:28,535 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-21 22:23:28,535 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-12-21 22:23:28,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2021-12-21 22:23:28,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:28,535 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-12-21 22:23:28,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2021-12-21 22:23:28,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-12-21 22:23:28,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 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 22:23:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-12-21 22:23:28,536 INFO L704 BuchiCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-12-21 22:23:28,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 22:23:28,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 22:23:28,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-21 22:23:28,537 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 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 22:23:28,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 22:23:28,560 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2021-12-21 22:23:28,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 22:23:28,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 51 transitions. [2021-12-21 22:23:28,562 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 22:23:28,562 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 37 states and 39 transitions. [2021-12-21 22:23:28,562 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2021-12-21 22:23:28,562 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-12-21 22:23:28,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 39 transitions. [2021-12-21 22:23:28,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-21 22:23:28,562 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-12-21 22:23:28,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 39 transitions. [2021-12-21 22:23:28,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-12-21 22:23:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 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 22:23:28,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-12-21 22:23:28,564 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-12-21 22:23:28,564 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-12-21 22:23:28,564 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-21 22:23:28,564 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 37 transitions. [2021-12-21 22:23:28,565 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-21 22:23:28,565 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-21 22:23:28,565 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-21 22:23:28,566 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 9, 9, 1, 1] [2021-12-21 22:23:28,566 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-21 22:23:28,566 INFO L791 eck$LassoCheckResult]: Stem: 669#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); 670#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 675#L28-2 assume !false; 671#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 672#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 677#L28-2 assume !false; 703#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 702#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 701#L28-2 assume !false; 700#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 699#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 698#L28-2 assume !false; 697#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 696#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 695#L28-2 assume !false; 694#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 693#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 692#L28-2 assume !false; 691#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 690#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 689#L28-2 assume !false; 688#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 687#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 686#L28-2 assume !false; 685#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 684#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 683#L28-2 assume !false; 682#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 681#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 678#L28-2 [2021-12-21 22:23:28,566 INFO L793 eck$LassoCheckResult]: Loop: 678#L28-2 assume !false; 680#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 679#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 678#L28-2 [2021-12-21 22:23:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:28,566 INFO L85 PathProgramCache]: Analyzing trace with hash 992319728, now seen corresponding path program 2 times [2021-12-21 22:23:28,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:28,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833079001] [2021-12-21 22:23:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:28,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:28,578 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:28,590 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:28,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash 40818, now seen corresponding path program 1 times [2021-12-21 22:23:28,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:28,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078887804] [2021-12-21 22:23:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:28,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:28,594 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:28,595 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:28,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:28,596 INFO L85 PathProgramCache]: Analyzing trace with hash -62870493, now seen corresponding path program 3 times [2021-12-21 22:23:28,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 22:23:28,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547219883] [2021-12-21 22:23:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 22:23:28,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 22:23:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:28,606 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 22:23:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 22:23:28,617 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 22:23:28,632 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:28,632 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:28,632 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:28,632 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:28,632 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-21 22:23:28,632 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,632 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:28,632 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:28,633 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration4_Loop [2021-12-21 22:23:28,633 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:28,633 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:28,633 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 22:23:28,636 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 22:23:28,638 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 22:23:28,641 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 22:23:28,660 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:28,661 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-21 22:23:28,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,662 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 22:23:28,676 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 22:23:28,677 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:28,677 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:28,710 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 22:23:28,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,712 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 22:23:28,713 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 22:23:28,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:28,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:28,738 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:28,738 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=-1} Honda state: {ULTIMATE.start_main_~y~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0#1=1}, {ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=0}] Lambdas: [1, 13, 6] Nus: [1, 1] [2021-12-21 22:23:28,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-12-21 22:23:28,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,755 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 22:23:28,755 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 22:23:28,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:28,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:28,765 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-21 22:23:28,765 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post1#1=0} Honda state: {ULTIMATE.start_main_#t~post1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-21 22:23:28,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-12-21 22:23:28,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,782 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 22:23:28,782 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 22:23:28,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-21 22:23:28,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:28,807 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 22:23:28,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,809 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 22:23:28,810 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 22:23:28,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-21 22:23:28,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-21 22:23:28,841 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-21 22:23:28,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-12-21 22:23:28,845 INFO L210 LassoAnalysis]: Preferences: [2021-12-21 22:23:28,845 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-21 22:23:28,845 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-21 22:23:28,845 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-21 22:23:28,845 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-21 22:23:28,845 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,845 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-21 22:23:28,845 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-21 22:23:28,845 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration4_Loop [2021-12-21 22:23:28,845 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-21 22:23:28,845 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-21 22:23:28,846 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 22:23:28,850 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 22:23:28,851 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 22:23:28,855 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 22:23:28,888 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-21 22:23:28,888 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-21 22:23:28,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,908 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 22:23:28,917 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 22:23:28,923 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:28,923 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:28,923 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:28,923 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:28,923 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:28,923 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 22:23:28,924 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:28,924 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:28,925 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:28,943 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 22:23:28,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,944 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:23:28,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-21 22:23:28,946 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 22:23:28,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:28,953 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:28,953 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:28,953 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:28,953 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:28,953 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:28,953 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:28,957 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-21 22:23:28,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-12-21 22:23:28,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:28,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:28,974 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-21 22:23:28,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-21 22:23:28,977 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 22:23:28,983 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-21 22:23:28,983 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-21 22:23:28,983 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-21 22:23:28,983 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-21 22:23:28,983 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-21 22:23:28,984 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-21 22:23:28,984 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-21 22:23:28,987 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-21 22:23:29,005 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-21 22:23:29,005 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-21 22:23:29,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-21 22:23:29,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 22:23:29,006 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 22:23:29,007 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 22:23:29,008 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-21 22:23:29,008 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-21 22:23:29,008 INFO L513 LassoAnalysis]: Proved termination. [2021-12-21 22:23:29,008 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 99 Supporting invariants [] [2021-12-21 22:23:29,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:29,026 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-21 22:23:29,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 22:23:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:29,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 22:23:29,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 22:23:29,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 22:23:29,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 22:23:29,107 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 22:23:29,108 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 22:23:29,108 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 22:23:29,116 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 61 states and 65 transitions. Complement of second has 6 states. [2021-12-21 22:23:29,116 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 22:23:29,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 22:23:29,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-12-21 22:23:29,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 3 letters. [2021-12-21 22:23:29,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:29,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 32 letters. Loop has 3 letters. [2021-12-21 22:23:29,117 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:29,117 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 6 letters. [2021-12-21 22:23:29,118 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-21 22:23:29,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 65 transitions. [2021-12-21 22:23:29,118 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:23:29,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2021-12-21 22:23:29,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-21 22:23:29,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-21 22:23:29,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-21 22:23:29,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-21 22:23:29,119 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:23:29,119 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:23:29,119 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 22:23:29,119 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-21 22:23:29,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-21 22:23:29,119 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-21 22:23:29,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-21 22:23:29,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.12 10:23:29 BoogieIcfgContainer [2021-12-21 22:23:29,124 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-21 22:23:29,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 22:23:29,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 22:23:29,124 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 22:23:29,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:23:25" (3/4) ... [2021-12-21 22:23:29,126 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 22:23:29,126 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 22:23:29,127 INFO L158 Benchmark]: Toolchain (without parser) took 3890.81ms. Allocated memory was 77.6MB in the beginning and 146.8MB in the end (delta: 69.2MB). Free memory was 44.4MB in the beginning and 68.8MB in the end (delta: -24.4MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2021-12-21 22:23:29,127 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 77.6MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:23:29,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.00ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 44.2MB in the beginning and 80.1MB in the end (delta: -35.9MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-12-21 22:23:29,127 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.09ms. Allocated memory is still 102.8MB. Free memory was 80.1MB in the beginning and 78.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 22:23:29,127 INFO L158 Benchmark]: Boogie Preprocessor took 10.51ms. Allocated memory is still 102.8MB. Free memory was 78.7MB in the beginning and 77.9MB in the end (delta: 776.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:23:29,128 INFO L158 Benchmark]: RCFGBuilder took 197.12ms. Allocated memory is still 102.8MB. Free memory was 77.6MB in the beginning and 69.2MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 22:23:29,128 INFO L158 Benchmark]: BuchiAutomizer took 3404.67ms. Allocated memory was 102.8MB in the beginning and 146.8MB in the end (delta: 44.0MB). Free memory was 69.0MB in the beginning and 68.8MB in the end (delta: 206.0kB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2021-12-21 22:23:29,128 INFO L158 Benchmark]: Witness Printer took 2.10ms. Allocated memory is still 146.8MB. Free memory is still 68.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 22:23:29,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 77.6MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.00ms. Allocated memory was 77.6MB in the beginning and 102.8MB in the end (delta: 25.2MB). Free memory was 44.2MB in the beginning and 80.1MB in the end (delta: -35.9MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.09ms. Allocated memory is still 102.8MB. Free memory was 80.1MB in the beginning and 78.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.51ms. Allocated memory is still 102.8MB. Free memory was 78.7MB in the beginning and 77.9MB in the end (delta: 776.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 197.12ms. Allocated memory is still 102.8MB. Free memory was 77.6MB in the beginning and 69.2MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 3404.67ms. Allocated memory was 102.8MB in the beginning and 146.8MB in the end (delta: 44.0MB). Free memory was 69.0MB in the beginning and 68.8MB in the end (delta: 206.0kB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. * Witness Printer took 2.10ms. Allocated memory is still 146.8MB. Free memory is still 68.8MB. 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 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function 2 * y + 1 and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 99 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 5 iterations. TraceHistogramMax:9. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 35 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 34 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 49 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq154 hnf94 smp100 dnf100 smp100 tf112 neg94 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 56ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 3 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-21 22:23:29,165 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 22:23:29,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:29,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 22:23:29,791 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