./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.01.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7e1ff0e6 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-restricted-15/b.01.c -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 0360ab125f8731d0a42139085091eb1fa52387472021da2b1f8231b4702522e5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-15 02:26:12,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 02:26:12,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 02:26:12,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 02:26:12,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 02:26:12,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 02:26:12,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 02:26:12,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 02:26:12,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 02:26:12,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 02:26:12,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 02:26:12,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 02:26:12,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 02:26:12,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 02:26:12,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 02:26:12,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 02:26:12,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 02:26:12,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 02:26:12,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 02:26:12,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 02:26:12,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 02:26:12,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 02:26:12,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 02:26:12,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 02:26:12,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 02:26:12,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 02:26:12,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 02:26:12,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 02:26:12,394 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 02:26:12,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 02:26:12,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 02:26:12,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 02:26:12,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 02:26:12,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 02:26:12,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 02:26:12,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 02:26:12,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 02:26:12,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 02:26:12,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 02:26:12,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 02:26:12,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 02:26:12,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 02:26:12,444 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 02:26:12,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 02:26:12,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 02:26:12,445 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 02:26:12,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 02:26:12,446 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 02:26:12,446 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 02:26:12,447 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 02:26:12,447 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 02:26:12,447 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 02:26:12,448 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 02:26:12,448 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 02:26:12,448 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 02:26:12,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 02:26:12,449 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 02:26:12,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 02:26:12,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 02:26:12,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 02:26:12,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 02:26:12,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 02:26:12,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 02:26:12,450 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 02:26:12,450 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 02:26:12,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 02:26:12,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 02:26:12,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 02:26:12,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 02:26:12,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 02:26:12,452 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 02:26:12,452 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0360ab125f8731d0a42139085091eb1fa52387472021da2b1f8231b4702522e5 [2023-02-15 02:26:12,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 02:26:12,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 02:26:12,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 02:26:12,721 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 02:26:12,722 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 02:26:12,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.01.c [2023-02-15 02:26:13,915 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 02:26:14,065 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 02:26:14,065 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.01.c [2023-02-15 02:26:14,071 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff7db2e0/51851b7b14a2493f9eec1516aa20c96b/FLAG8b964c956 [2023-02-15 02:26:14,083 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff7db2e0/51851b7b14a2493f9eec1516aa20c96b [2023-02-15 02:26:14,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 02:26:14,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 02:26:14,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 02:26:14,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 02:26:14,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 02:26:14,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d169e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14, skipping insertion in model container [2023-02-15 02:26:14,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 02:26:14,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 02:26:14,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 02:26:14,219 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 02:26:14,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 02:26:14,238 INFO L208 MainTranslator]: Completed translation [2023-02-15 02:26:14,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14 WrapperNode [2023-02-15 02:26:14,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 02:26:14,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 02:26:14,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 02:26:14,240 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 02:26:14,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,264 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2023-02-15 02:26:14,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 02:26:14,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 02:26:14,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 02:26:14,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 02:26:14,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,280 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 02:26:14,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 02:26:14,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 02:26:14,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 02:26:14,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14" (1/1) ... [2023-02-15 02:26:14,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 02:26:14,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:26:14,311 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) [2023-02-15 02:26:14,313 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 [2023-02-15 02:26:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 02:26:14,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 02:26:14,403 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 02:26:14,405 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 02:26:14,467 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 02:26:14,473 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 02:26:14,474 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 02:26:14,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:26:14 BoogieIcfgContainer [2023-02-15 02:26:14,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 02:26:14,477 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 02:26:14,477 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 02:26:14,480 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 02:26:14,481 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 02:26:14,481 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 02:26:14" (1/3) ... [2023-02-15 02:26:14,482 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b777679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:26:14, skipping insertion in model container [2023-02-15 02:26:14,482 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 02:26:14,483 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:26:14" (2/3) ... [2023-02-15 02:26:14,483 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b777679 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:26:14, skipping insertion in model container [2023-02-15 02:26:14,483 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 02:26:14,484 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:26:14" (3/3) ... [2023-02-15 02:26:14,485 INFO L332 chiAutomizerObserver]: Analyzing ICFG b.01.c [2023-02-15 02:26:14,550 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 02:26:14,550 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 02:26:14,551 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 02:26:14,551 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 02:26:14,551 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 02:26:14,551 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 02:26:14,551 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 02:26:14,551 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 02:26:14,557 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) 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) [2023-02-15 02:26:14,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-15 02:26:14,576 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 02:26:14,576 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 02:26:14,580 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 02:26:14,580 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-15 02:26:14,581 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 02:26:14,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) 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) [2023-02-15 02:26:14,582 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-15 02:26:14,582 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 02:26:14,582 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 02:26:14,583 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-15 02:26:14,583 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-15 02:26:14,590 INFO L748 eck$LassoCheckResult]: Stem: 4#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 7#L11-2true [2023-02-15 02:26:14,591 INFO L750 eck$LassoCheckResult]: Loop: 7#L11-2true assume !!(main_~x~0#1 > main_~y~0#1);main_~x~0#1 := main_~x~0#1 - 1; 7#L11-2true [2023-02-15 02:26:14,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:26:14,597 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-02-15 02:26:14,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:26:14,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030396248] [2023-02-15 02:26:14,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:26:14,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:26:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:26:14,665 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 02:26:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:26:14,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 02:26:14,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:26:14,690 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2023-02-15 02:26:14,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:26:14,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778943305] [2023-02-15 02:26:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:26:14,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:26:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:26:14,715 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 02:26:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:26:14,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 02:26:14,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:26:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-02-15 02:26:14,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:26:14,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095543999] [2023-02-15 02:26:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:26:14,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:26:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:26:14,747 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 02:26:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 02:26:14,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 02:26:14,804 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 02:26:14,805 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 02:26:14,805 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 02:26:14,805 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 02:26:14,805 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 02:26:14,806 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 02:26:14,806 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 02:26:14,806 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 02:26:14,806 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.01.c_Iteration1_Loop [2023-02-15 02:26:14,806 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 02:26:14,806 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 02:26:14,831 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 02:26:14,845 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 02:26:14,854 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 02:26:14,934 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 02:26:14,935 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 02:26:14,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 02:26:14,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:26:14,940 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) [2023-02-15 02:26:14,965 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 [2023-02-15 02:26:14,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 02:26:14,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 02:26:15,008 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 02:26:15,008 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 02:26:15,034 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 [2023-02-15 02:26:15,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 02:26:15,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:26:15,046 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) [2023-02-15 02:26:15,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 02:26:15,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 02:26:15,089 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 [2023-02-15 02:26:15,107 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 02:26:15,107 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-15 02:26:15,115 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 [2023-02-15 02:26:15,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 02:26:15,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:26:15,121 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) [2023-02-15 02:26:15,124 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 [2023-02-15 02:26:15,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 02:26:15,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 02:26:15,159 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 [2023-02-15 02:26:15,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 02:26:15,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:26:15,162 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) [2023-02-15 02:26:15,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 02:26:15,170 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 02:26:15,170 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 [2023-02-15 02:26:15,304 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 02:26:15,309 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 [2023-02-15 02:26:15,310 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 02:26:15,310 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 02:26:15,310 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 02:26:15,310 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 02:26:15,310 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 02:26:15,310 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 02:26:15,310 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 02:26:15,310 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 02:26:15,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.01.c_Iteration1_Loop [2023-02-15 02:26:15,311 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 02:26:15,311 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 02:26:15,313 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 02:26:15,320 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 02:26:15,326 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 02:26:15,382 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 02:26:15,386 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 02:26:15,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 02:26:15,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:26:15,388 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) [2023-02-15 02:26:15,391 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 [2023-02-15 02:26:15,393 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 [2023-02-15 02:26:15,401 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 02:26:15,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 02:26:15,401 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 02:26:15,401 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 02:26:15,406 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 02:26:15,406 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 02:26:15,424 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 02:26:15,431 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 [2023-02-15 02:26:15,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 02:26:15,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:26:15,433 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) [2023-02-15 02:26:15,444 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 [2023-02-15 02:26:15,452 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 02:26:15,452 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 02:26:15,452 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 02:26:15,452 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 02:26:15,455 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 02:26:15,456 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 02:26:15,461 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 [2023-02-15 02:26:15,474 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 02:26:15,478 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 [2023-02-15 02:26:15,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 02:26:15,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:26:15,480 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) [2023-02-15 02:26:15,488 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 [2023-02-15 02:26:15,489 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 [2023-02-15 02:26:15,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 02:26:15,495 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 02:26:15,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 02:26:15,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 02:26:15,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 02:26:15,497 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 02:26:15,497 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 02:26:15,513 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 02:26:15,518 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-15 02:26:15,518 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 02:26:15,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 02:26:15,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:26:15,567 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) [2023-02-15 02:26:15,569 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 [2023-02-15 02:26:15,572 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 02:26:15,572 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 02:26:15,572 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 02:26:15,573 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-02-15 02:26:15,579 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 [2023-02-15 02:26:15,583 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 02:26:15,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:26:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:26:15,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 02:26:15,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:26:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:26:15,637 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 02:26:15,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:26:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:26:15,680 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-15 02:26:15,683 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.3333333333333333) 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) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:26:15,713 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.3333333333333333) 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). Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 19 transitions. Complement of second has 5 states. [2023-02-15 02:26:15,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-15 02:26:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:26:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2023-02-15 02:26:15,721 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 1 letters. [2023-02-15 02:26:15,721 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 02:26:15,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 1 letters. [2023-02-15 02:26:15,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 02:26:15,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 2 letters. [2023-02-15 02:26:15,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 02:26:15,723 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2023-02-15 02:26:15,724 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 02:26:15,726 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2023-02-15 02:26:15,726 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-15 02:26:15,727 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-15 02:26:15,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-15 02:26:15,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 02:26:15,727 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 02:26:15,727 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 02:26:15,727 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 02:26:15,727 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-15 02:26:15,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-15 02:26:15,728 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 02:26:15,728 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-15 02:26:15,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 02:26:15 BoogieIcfgContainer [2023-02-15 02:26:15,733 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 02:26:15,734 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 02:26:15,734 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 02:26:15,734 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 02:26:15,735 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:26:14" (3/4) ... [2023-02-15 02:26:15,737 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 02:26:15,737 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 02:26:15,738 INFO L158 Benchmark]: Toolchain (without parser) took 1651.45ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 51.8MB in the end (delta: 63.4MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2023-02-15 02:26:15,738 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 02:26:15,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 151.76ms. Allocated memory is still 151.0MB. Free memory was 114.7MB in the beginning and 105.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 02:26:15,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.58ms. Allocated memory is still 151.0MB. Free memory was 105.8MB in the beginning and 104.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 02:26:15,740 INFO L158 Benchmark]: Boogie Preprocessor took 16.92ms. Allocated memory is still 151.0MB. Free memory was 104.7MB in the beginning and 103.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 02:26:15,740 INFO L158 Benchmark]: RCFGBuilder took 192.47ms. Allocated memory is still 151.0MB. Free memory was 103.7MB in the beginning and 95.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 02:26:15,740 INFO L158 Benchmark]: BuchiAutomizer took 1256.57ms. Allocated memory is still 151.0MB. Free memory was 95.3MB in the beginning and 51.8MB in the end (delta: 43.5MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-02-15 02:26:15,741 INFO L158 Benchmark]: Witness Printer took 3.30ms. Allocated memory is still 151.0MB. Free memory is still 51.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 02:26:15,743 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 151.0MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 151.76ms. Allocated memory is still 151.0MB. Free memory was 114.7MB in the beginning and 105.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.58ms. Allocated memory is still 151.0MB. Free memory was 105.8MB in the beginning and 104.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.92ms. Allocated memory is still 151.0MB. Free memory was 104.7MB in the beginning and 103.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 192.47ms. Allocated memory is still 151.0MB. Free memory was 103.7MB in the beginning and 95.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1256.57ms. Allocated memory is still 151.0MB. Free memory was 95.3MB in the beginning and 51.8MB in the end (delta: 43.5MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 3.30ms. Allocated memory is still 151.0MB. Free memory is still 51.8MB. 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * y + x and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-15 02:26:15,758 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 [2023-02-15 02:26:15,959 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 Writing output log to file Ultimate.log Result: TRUE