./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-memory-alloca/BrockschmidtCookFuhs-2013CAV-Fig1-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b 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/termination-memory-alloca/BrockschmidtCookFuhs-2013CAV-Fig1-alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash e0a1cec22a7e787a87b4a304bdc1225ca64aedbe71e13dd8a6657fba2c77bbf7 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:04:33,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:04:33,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:04:33,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:04:33,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:04:33,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:04:33,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:04:33,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:04:33,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:04:33,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:04:33,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:04:33,448 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:04:33,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:04:33,449 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:04:33,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:04:33,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:04:33,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:04:33,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:04:33,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:04:33,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:04:33,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:04:33,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:04:33,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:04:33,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:04:33,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:04:33,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:04:33,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:04:33,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:04:33,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:04:33,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:04:33,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:04:33,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:04:33,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:04:33,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:04:33,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:04:33,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:04:33,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:04:33,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:04:33,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:04:33,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:04:33,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:04:33,486 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-14 23:04:33,506 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:04:33,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:04:33,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:04:33,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:04:33,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:04:33,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:04:33,510 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:04:33,510 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:04:33,510 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:04:33,510 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:04:33,511 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:04:33,511 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:04:33,511 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:04:33,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:04:33,511 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:04:33,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:04:33,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:04:33,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:04:33,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:04:33,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:04:33,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:04:33,512 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:04:33,512 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:04:33,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:04:33,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:04:33,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:04:33,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:04:33,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:04:33,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:04:33,513 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:04:33,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0a1cec22a7e787a87b4a304bdc1225ca64aedbe71e13dd8a6657fba2c77bbf7 [2021-12-14 23:04:33,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:04:33,707 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:04:33,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:04:33,711 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:04:33,715 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:04:33,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/BrockschmidtCookFuhs-2013CAV-Fig1-alloca.i [2021-12-14 23:04:33,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41447d6f6/b090edc291034e0a8ae2f8122c5d2ec6/FLAG1bcf57b94 [2021-12-14 23:04:34,136 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:04:34,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/BrockschmidtCookFuhs-2013CAV-Fig1-alloca.i [2021-12-14 23:04:34,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41447d6f6/b090edc291034e0a8ae2f8122c5d2ec6/FLAG1bcf57b94 [2021-12-14 23:04:34,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41447d6f6/b090edc291034e0a8ae2f8122c5d2ec6 [2021-12-14 23:04:34,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:04:34,535 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:04:34,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:04:34,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:04:34,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:04:34,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:04:34" (1/1) ... [2021-12-14 23:04:34,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e69a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34, skipping insertion in model container [2021-12-14 23:04:34,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:04:34" (1/1) ... [2021-12-14 23:04:34,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:04:34,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:04:34,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:04:34,792 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:04:34,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:04:34,848 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:04:34,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34 WrapperNode [2021-12-14 23:04:34,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:04:34,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:04:34,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:04:34,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:04:34,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34" (1/1) ... [2021-12-14 23:04:34,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34" (1/1) ... [2021-12-14 23:04:34,884 INFO L137 Inliner]: procedures = 109, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 52 [2021-12-14 23:04:34,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:04:34,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:04:34,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:04:34,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:04:34,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34" (1/1) ... [2021-12-14 23:04:34,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34" (1/1) ... [2021-12-14 23:04:34,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34" (1/1) ... [2021-12-14 23:04:34,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34" (1/1) ... [2021-12-14 23:04:34,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34" (1/1) ... [2021-12-14 23:04:34,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34" (1/1) ... [2021-12-14 23:04:34,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34" (1/1) ... [2021-12-14 23:04:34,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:04:34,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:04:34,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:04:34,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:04:34,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34" (1/1) ... [2021-12-14 23:04:34,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:04:34,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:04:34,941 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) [2021-12-14 23:04:34,943 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 [2021-12-14 23:04:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 23:04:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 23:04:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 23:04:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 23:04:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:04:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:04:35,068 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:04:35,069 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:04:35,222 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:04:35,226 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:04:35,228 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 23:04:35,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:04:35 BoogieIcfgContainer [2021-12-14 23:04:35,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:04:35,230 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:04:35,231 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:04:35,233 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:04:35,234 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:04:35,234 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:04:34" (1/3) ... [2021-12-14 23:04:35,235 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29c6961d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:04:35, skipping insertion in model container [2021-12-14 23:04:35,235 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:04:35,235 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:04:34" (2/3) ... [2021-12-14 23:04:35,235 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@29c6961d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:04:35, skipping insertion in model container [2021-12-14 23:04:35,235 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:04:35,236 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:04:35" (3/3) ... [2021-12-14 23:04:35,236 INFO L388 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-2013CAV-Fig1-alloca.i [2021-12-14 23:04:35,273 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:04:35,274 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:04:35,274 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:04:35,274 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:04:35,274 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:04:35,274 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:04:35,274 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:04:35,275 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:04:35,285 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:04:35,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 23:04:35,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:04:35,300 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:04:35,304 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:04:35,304 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:04:35,304 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:04:35,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:04:35,306 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 23:04:35,307 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:04:35,307 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:04:35,307 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:04:35,307 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:04:35,311 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~malloc4#1.base, main_#t~malloc4#1.offset, main_#t~mem9#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~mem10#1, main_#t~mem5#1, main_#t~mem6#1, main_~i~0#1.base, main_~i~0#1.offset, main_~j~0#1.base, main_~j~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~i~0#1.base, main_~i~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~j~0#1.base, main_~j~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call main_#t~malloc4#1.base, main_#t~malloc4#1.offset := #Ultimate.allocOnStack(4);main_~n~0#1.base, main_~n~0#1.offset := main_#t~malloc4#1.base, main_#t~malloc4#1.offset; 9#L550-3true [2021-12-14 23:04:35,312 INFO L793 eck$LassoCheckResult]: Loop: 9#L550-3true call main_#t~mem5#1 := read~int(main_~i~0#1.base, main_~i~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~n~0#1.base, main_~n~0#1.offset, 4); 11#L550-1true assume !!(main_#t~mem5#1 < main_#t~mem6#1);havoc main_#t~mem5#1;havoc main_#t~mem6#1;call write~int(0, main_~j~0#1.base, main_~j~0#1.offset, 4); 5#L552-3true assume !true; 6#L552-4true call main_#t~mem10#1 := read~int(main_~i~0#1.base, main_~i~0#1.offset, 4);call write~int(1 + main_#t~mem10#1, main_~i~0#1.base, main_~i~0#1.offset, 4);havoc main_#t~mem10#1; 9#L550-3true [2021-12-14 23:04:35,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:04:35,316 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-14 23:04:35,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:04:35,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603713834] [2021-12-14 23:04:35,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:04:35,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:04:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:04:35,412 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:04:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:04:35,452 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:04:35,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:04:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1144360, now seen corresponding path program 1 times [2021-12-14 23:04:35,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:04:35,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076603212] [2021-12-14 23:04:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:04:35,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:04:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:04:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:04:35,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:04:35,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076603212] [2021-12-14 23:04:35,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076603212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:04:35,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:04:35,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 23:04:35,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372804993] [2021-12-14 23:04:35,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:04:35,520 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:04:35,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:04:35,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 23:04:35,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 23:04:35,557 INFO L87 Difference]: Start difference. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-12-14 23:04:35,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:04:35,561 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-12-14 23:04:35,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 23:04:35,566 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2021-12-14 23:04:35,567 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 23:04:35,569 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2021-12-14 23:04:35,570 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-12-14 23:04:35,570 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-12-14 23:04:35,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2021-12-14 23:04:35,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:04:35,571 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-12-14 23:04:35,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2021-12-14 23:04:35,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-12-14 23:04:35,587 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) [2021-12-14 23:04:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-12-14 23:04:35,589 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-12-14 23:04:35,589 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-12-14 23:04:35,589 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:04:35,589 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2021-12-14 23:04:35,590 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-12-14 23:04:35,590 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:04:35,590 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:04:35,590 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:04:35,590 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-12-14 23:04:35,591 INFO L791 eck$LassoCheckResult]: Stem: 30#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 31#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~malloc4#1.base, main_#t~malloc4#1.offset, main_#t~mem9#1, main_#t~mem7#1, main_#t~mem8#1, main_#t~mem10#1, main_#t~mem5#1, main_#t~mem6#1, main_~i~0#1.base, main_~i~0#1.offset, main_~j~0#1.base, main_~j~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~i~0#1.base, main_~i~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnStack(4);main_~j~0#1.base, main_~j~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;call main_#t~malloc4#1.base, main_#t~malloc4#1.offset := #Ultimate.allocOnStack(4);main_~n~0#1.base, main_~n~0#1.offset := main_#t~malloc4#1.base, main_#t~malloc4#1.offset; 35#L550-3 [2021-12-14 23:04:35,591 INFO L793 eck$LassoCheckResult]: Loop: 35#L550-3 call main_#t~mem5#1 := read~int(main_~i~0#1.base, main_~i~0#1.offset, 4);call main_#t~mem6#1 := read~int(main_~n~0#1.base, main_~n~0#1.offset, 4); 36#L550-1 assume !!(main_#t~mem5#1 < main_#t~mem6#1);havoc main_#t~mem5#1;havoc main_#t~mem6#1;call write~int(0, main_~j~0#1.base, main_~j~0#1.offset, 4); 32#L552-3 call main_#t~mem7#1 := read~int(main_~j~0#1.base, main_~j~0#1.offset, 4);call main_#t~mem8#1 := read~int(main_~i~0#1.base, main_~i~0#1.offset, 4); 33#L552-1 assume !(main_#t~mem7#1 <= main_#t~mem8#1);havoc main_#t~mem7#1;havoc main_#t~mem8#1; 34#L552-4 call main_#t~mem10#1 := read~int(main_~i~0#1.base, main_~i~0#1.offset, 4);call write~int(1 + main_#t~mem10#1, main_~i~0#1.base, main_~i~0#1.offset, 4);havoc main_#t~mem10#1; 35#L550-3 [2021-12-14 23:04:35,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:04:35,592 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-14 23:04:35,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:04:35,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225359208] [2021-12-14 23:04:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:04:35,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:04:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:04:35,621 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:04:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:04:35,636 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:04:35,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:04:35,637 INFO L85 PathProgramCache]: Analyzing trace with hash 35468273, now seen corresponding path program 1 times [2021-12-14 23:04:35,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:04:35,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856864518] [2021-12-14 23:04:35,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:04:35,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:04:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:04:35,660 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:04:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:04:35,684 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:04:35,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:04:35,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907759, now seen corresponding path program 1 times [2021-12-14 23:04:35,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:04:35,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096254166] [2021-12-14 23:04:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:04:35,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:04:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:04:35,711 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:04:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:04:35,742 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:04:36,139 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:04:36,139 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:04:36,139 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:04:36,139 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:04:36,140 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:04:36,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:04:36,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:04:36,140 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:04:36,140 INFO L133 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-2013CAV-Fig1-alloca.i_Iteration2_Lasso [2021-12-14 23:04:36,140 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:04:36,140 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:04:36,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:04:36,755 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:04:36,758 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:04:36,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:04:36,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:04:36,760 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) [2021-12-14 23:04:36,762 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 [2021-12-14 23:04:36,768 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 [2021-12-14 23:04:36,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:04:36,768 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:04:36,768 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:04:36,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:04:36,782 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:04:36,783 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:04:36,796 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:04:36,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-14 23:04:36,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:04:36,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:04:36,822 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) [2021-12-14 23:04:36,824 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 [2021-12-14 23:04:36,835 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 [2021-12-14 23:04:36,851 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:04:36,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:04:36,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:04:36,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:04:36,855 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:04:36,855 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:04:36,867 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:04:36,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-14 23:04:36,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:04:36,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:04:36,888 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) [2021-12-14 23:04:36,889 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 [2021-12-14 23:04:36,895 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:04:36,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:04:36,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:04:36,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:04:36,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:04:36,905 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:04:36,905 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:04:36,926 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:04:36,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2021-12-14 23:04:36,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:04:36,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:04:36,973 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) [2021-12-14 23:04:36,975 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 [2021-12-14 23:04:36,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:04:36,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:04:36,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:04:36,981 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:04:36,984 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 [2021-12-14 23:04:36,985 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:04:36,985 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:04:37,003 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:04:37,036 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 [2021-12-14 23:04:37,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:04:37,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:04:37,038 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) [2021-12-14 23:04:37,039 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 [2021-12-14 23:04:37,040 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 [2021-12-14 23:04:37,046 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:04:37,046 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:04:37,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:04:37,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:04:37,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:04:37,047 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:04:37,047 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:04:37,062 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:04:37,077 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 [2021-12-14 23:04:37,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:04:37,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:04:37,078 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) [2021-12-14 23:04:37,079 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 [2021-12-14 23:04:37,080 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 [2021-12-14 23:04:37,085 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:04:37,085 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:04:37,086 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:04:37,086 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:04:37,086 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:04:37,087 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:04:37,087 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:04:37,096 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:04:37,101 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:04:37,101 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 23:04:37,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:04:37,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:04:37,103 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) [2021-12-14 23:04:37,104 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 [2021-12-14 23:04:37,105 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:04:37,105 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:04:37,105 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:04:37,105 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_main_~i~0#1.base) ULTIMATE.start_main_~i~0#1.offset)_1) = -1*v_rep(select (select #memory_int ULTIMATE.start_main_~i~0#1.base) ULTIMATE.start_main_~i~0#1.offset)_1 Supporting invariants [] [2021-12-14 23:04:37,123 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 [2021-12-14 23:04:37,169 INFO L297 tatePredicateManager]: 24 out of 24 supporting invariants were superfluous and have been removed [2021-12-14 23:04:37,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:04:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:04:37,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:04:37,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:04:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:04:37,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 23:04:37,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:04:37,317 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-14 23:04:37,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 28 [2021-12-14 23:04:37,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:04:37,443 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-12-14 23:04:37,444 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-12-14 23:04:37,490 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 [2021-12-14 23:04:37,497 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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 16 states and 18 transitions. Complement of second has 7 states. [2021-12-14 23:04:37,498 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 [2021-12-14 23:04:37,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-12-14 23:04:37,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2021-12-14 23:04:37,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 5 letters. [2021-12-14 23:04:37,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:04:37,500 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:04:37,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:04:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:04:37,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:04:37,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:04:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:04:37,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 23:04:37,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:04:37,569 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-14 23:04:37,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 28 [2021-12-14 23:04:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:04:37,688 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-12-14 23:04:37,689 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-12-14 23:04:37,704 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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 16 states and 18 transitions. Complement of second has 7 states. [2021-12-14 23:04:37,705 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 [2021-12-14 23:04:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-12-14 23:04:37,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2021-12-14 23:04:37,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 2 letters. Loop has 5 letters. [2021-12-14 23:04:37,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:04:37,706 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:04:37,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:04:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:04:37,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:04:37,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:04:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:04:37,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 23:04:37,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:04:37,763 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-14 23:04:37,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 28 [2021-12-14 23:04:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:04:37,860 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-12-14 23:04:37,860 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-12-14 23:04:37,874 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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 16 states and 18 transitions. Complement of second has 6 states. [2021-12-14 23:04:37,875 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 [2021-12-14 23:04:37,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-12-14 23:04:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2021-12-14 23:04:37,876 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 2 letters. Loop has 5 letters. [2021-12-14 23:04:37,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:04:37,877 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:04:37,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:04:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:04:37,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:04:37,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:04:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:04:37,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 23:04:37,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:04:37,934 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-14 23:04:37,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 28 [2021-12-14 23:04:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:04:38,029 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-12-14 23:04:38,030 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-12-14 23:04:38,033 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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 9 states and 10 transitions. Complement of second has 2 states. [2021-12-14 23:04:38,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2021-12-14 23:04:38,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-12-14 23:04:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 9 transitions. [2021-12-14 23:04:38,036 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 9 transitions. Stem has 2 letters. Loop has 5 letters. [2021-12-14 23:04:38,036 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:04:38,036 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:04:38,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:04:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:04:38,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:04:38,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:04:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:04:38,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 23:04:38,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:04:38,080 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-12-14 23:04:38,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 28 [2021-12-14 23:04:38,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:04:38,168 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-12-14 23:04:38,168 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-12-14 23:04:38,213 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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 59 states and 90 transitions. Complement of second has 28 states 6 powerset states22 rank states. The highest rank that occured is 5 [2021-12-14 23:04:38,214 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 [2021-12-14 23:04:38,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 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) [2021-12-14 23:04:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 30 transitions. [2021-12-14 23:04:38,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 30 transitions. Stem has 2 letters. Loop has 5 letters. [2021-12-14 23:04:38,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:04:38,216 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:04:38,216 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer has thrown an exception: java.lang.AssertionError: no settings was sufficient at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.refineBuchi(BuchiCegarLoop.java:785) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.iterate(BuchiCegarLoop.java:549) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.doTerminationAnalysis(BuchiAutomizerObserver.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver.finish(BuchiAutomizerObserver.java:397) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-14 23:04:38,219 INFO L158 Benchmark]: Toolchain (without parser) took 3683.20ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 55.6MB in the beginning and 46.4MB in the end (delta: 9.2MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2021-12-14 23:04:38,219 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:04:38,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.16ms. Allocated memory is still 88.1MB. Free memory was 55.4MB in the beginning and 60.3MB in the end (delta: -4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 23:04:38,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.60ms. Allocated memory is still 88.1MB. Free memory was 59.9MB in the beginning and 58.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:04:38,220 INFO L158 Benchmark]: Boogie Preprocessor took 32.08ms. Allocated memory is still 88.1MB. Free memory was 58.3MB in the beginning and 57.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:04:38,220 INFO L158 Benchmark]: RCFGBuilder took 311.99ms. Allocated memory is still 88.1MB. Free memory was 57.0MB in the beginning and 47.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 23:04:38,221 INFO L158 Benchmark]: BuchiAutomizer took 2987.75ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 46.9MB in the beginning and 46.4MB in the end (delta: 539.9kB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2021-12-14 23:04:38,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.16ms. Allocated memory is still 88.1MB. Free memory was 55.4MB in the beginning and 60.3MB in the end (delta: -4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.60ms. Allocated memory is still 88.1MB. Free memory was 59.9MB in the beginning and 58.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.08ms. Allocated memory is still 88.1MB. Free memory was 58.3MB in the beginning and 57.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 311.99ms. Allocated memory is still 88.1MB. Free memory was 57.0MB in the beginning and 47.3MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2987.75ms. Allocated memory was 88.1MB in the beginning and 109.1MB in the end (delta: 21.0MB). Free memory was 46.9MB in the beginning and 46.4MB in the end (delta: 539.9kB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - ExceptionOrErrorResult: AssertionError: no settings was sufficient de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: AssertionError: no settings was sufficient: de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiCegarLoop.refineBuchi(BuchiCegarLoop.java:785) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-14 23:04:38,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config using search string *Termination*64bit*_Bitvector*.epf No suitable settings file found using Termination*64bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: no settings was sufficient