./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.06.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/b.06.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 cd5c27c3d2176afff10a944f874ec8be2c292b67 ........................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 14:12:47,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 14:12:47,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 14:12:47,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 14:12:47,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 14:12:47,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 14:12:47,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 14:12:47,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 14:12:47,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 14:12:47,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 14:12:47,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 14:12:47,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 14:12:47,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 14:12:47,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 14:12:47,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 14:12:47,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 14:12:47,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 14:12:47,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 14:12:47,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 14:12:47,596 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 14:12:47,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 14:12:47,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 14:12:47,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 14:12:47,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 14:12:47,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 14:12:47,607 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 14:12:47,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 14:12:47,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 14:12:47,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 14:12:47,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 14:12:47,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 14:12:47,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 14:12:47,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 14:12:47,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 14:12:47,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 14:12:47,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 14:12:47,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 14:12:47,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 14:12:47,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 14:12:47,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 14:12:47,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 14:12:47,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 14:12:47,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 14:12:47,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 14:12:47,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 14:12:47,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 14:12:47,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 14:12:47,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 14:12:47,663 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 14:12:47,663 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 14:12:47,663 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 14:12:47,663 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 14:12:47,664 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 14:12:47,664 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 14:12:47,665 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 14:12:47,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 14:12:47,665 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 14:12:47,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 14:12:47,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 14:12:47,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 14:12:47,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 14:12:47,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 14:12:47,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 14:12:47,666 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 14:12:47,667 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 14:12:47,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 14:12:47,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 14:12:47,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 14:12:47,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 14:12:47,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 14:12:47,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 14:12:47,669 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 14:12:47,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd5c27c3d2176afff10a944f874ec8be2c292b67 [2021-08-27 14:12:47,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 14:12:47,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 14:12:47,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 14:12:47,988 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 14:12:47,988 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 14:12:47,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.06.c [2021-08-27 14:12:48,038 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/983963165/44543558516e4a7fb00e2428ec68d681/FLAG71a6eb89e [2021-08-27 14:12:48,458 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 14:12:48,459 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.06.c [2021-08-27 14:12:48,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/983963165/44543558516e4a7fb00e2428ec68d681/FLAG71a6eb89e [2021-08-27 14:12:48,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/983963165/44543558516e4a7fb00e2428ec68d681 [2021-08-27 14:12:48,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 14:12:48,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 14:12:48,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 14:12:48,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 14:12:48,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 14:12:48,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:12:48" (1/1) ... [2021-08-27 14:12:48,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0ee16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48, skipping insertion in model container [2021-08-27 14:12:48,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:12:48" (1/1) ... [2021-08-27 14:12:48,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 14:12:48,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 14:12:48,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:12:48,644 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 14:12:48,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:12:48,669 INFO L208 MainTranslator]: Completed translation [2021-08-27 14:12:48,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48 WrapperNode [2021-08-27 14:12:48,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 14:12:48,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 14:12:48,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 14:12:48,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 14:12:48,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48" (1/1) ... [2021-08-27 14:12:48,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48" (1/1) ... [2021-08-27 14:12:48,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 14:12:48,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 14:12:48,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 14:12:48,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 14:12:48,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48" (1/1) ... [2021-08-27 14:12:48,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48" (1/1) ... [2021-08-27 14:12:48,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48" (1/1) ... [2021-08-27 14:12:48,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48" (1/1) ... [2021-08-27 14:12:48,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48" (1/1) ... [2021-08-27 14:12:48,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48" (1/1) ... [2021-08-27 14:12:48,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48" (1/1) ... [2021-08-27 14:12:48,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 14:12:48,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 14:12:48,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 14:12:48,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 14:12:48,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48" (1/1) ... [2021-08-27 14:12:48,752 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:48,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:48,770 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:48,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 14:12:48,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 14:12:48,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 14:12:48,941 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 14:12:48,941 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 14:12:48,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:12:48 BoogieIcfgContainer [2021-08-27 14:12:48,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 14:12:48,945 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 14:12:48,945 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 14:12:48,948 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 14:12:48,948 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:12:48,948 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 02:12:48" (1/3) ... [2021-08-27 14:12:48,949 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e841275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:12:48, skipping insertion in model container [2021-08-27 14:12:48,949 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:12:48,950 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:12:48" (2/3) ... [2021-08-27 14:12:48,950 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2e841275 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:12:48, skipping insertion in model container [2021-08-27 14:12:48,950 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:12:48,950 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:12:48" (3/3) ... [2021-08-27 14:12:48,952 INFO L389 chiAutomizerObserver]: Analyzing ICFG b.06.c [2021-08-27 14:12:48,997 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 14:12:48,998 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 14:12:48,998 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 14:12:48,998 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 14:12:48,998 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 14:12:48,998 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 14:12:48,999 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 14:12:48,999 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 14:12:49,009 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-08-27 14:12:49,027 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 14:12:49,027 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:12:49,027 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:12:49,031 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:12:49,031 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 14:12:49,032 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 14:12:49,032 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-08-27 14:12:49,033 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 14:12:49,033 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:12:49,033 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:12:49,033 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-08-27 14:12:49,033 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 14:12:49,039 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0, main_~y~0;havoc main_~c~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~c~0 := 0; 7#L11-2true [2021-08-27 14:12:49,039 INFO L793 eck$LassoCheckResult]: Loop: 7#L11-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0);main_~x~0 := main_~x~0 - 1;main_~y~0 := main_~y~0 - 1;main_~c~0 := 1 + main_~c~0; 7#L11-2true [2021-08-27 14:12:49,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:12:49,043 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-08-27 14:12:49,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:12:49,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201987527] [2021-08-27 14:12:49,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:12:49,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:12:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:49,115 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:12:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:49,135 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:12:49,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:12:49,138 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-08-27 14:12:49,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:12:49,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867046885] [2021-08-27 14:12:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:12:49,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:12:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:49,157 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:12:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:49,174 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:12:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:12:49,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-08-27 14:12:49,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:12:49,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130666229] [2021-08-27 14:12:49,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:12:49,177 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:12:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:49,191 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:12:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:12:49,206 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:12:49,390 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:12:49,391 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:12:49,391 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:12:49,391 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:12:49,392 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 14:12:49,392 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:49,392 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:12:49,392 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:12:49,392 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.06.c_Iteration1_Loop [2021-08-27 14:12:49,392 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:12:49,393 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:12:49,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:49,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:49,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:49,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:49,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:49,566 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:12:49,566 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 14:12:49,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:49,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:49,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:49,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 14:12:49,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 14:12:49,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:12:49,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-08-27 14:12:49,633 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:49,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:49,636 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:49,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 14:12:49,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 14:12:49,642 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 14:12:49,689 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 14:12:49,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:49,697 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:12:49,697 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:12:49,697 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:12:49,697 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:12:49,697 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:12:49,697 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:49,698 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:12:49,698 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:12:49,698 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.06.c_Iteration1_Loop [2021-08-27 14:12:49,698 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:12:49,698 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:12:49,700 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:49,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:49,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:49,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:49,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:12:49,794 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:12:49,798 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:12:49,799 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:49,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:49,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:49,812 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:12:49,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:12:49,821 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 14:12:49,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:12:49,821 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:12:49,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:12:49,824 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 14:12:49,824 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 14:12:49,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 14:12:49,840 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:12:49,846 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 14:12:49,846 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 14:12:49,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:12:49,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:12:49,848 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:12:49,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 14:12:49,878 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:12:49,878 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 14:12:49,879 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:12:49,879 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2021-08-27 14:12:49,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 14:12:49,911 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 14:12:49,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:12:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:12:49,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 14:12:49,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:12:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:12:49,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 14:12:49,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:12:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:12:49,959 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-27 14:12:49,960 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) Second operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:12:49,983 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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). Second operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 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 15 states and 18 transitions. Complement of second has 5 states. [2021-08-27 14:12:49,983 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 [2021-08-27 14:12:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:12:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-08-27 14:12:49,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 1 letters. [2021-08-27 14:12:49,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:12:49,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 1 letters. [2021-08-27 14:12:49,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:12:49,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 2 letters. [2021-08-27 14:12:49,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:12:49,987 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 18 transitions. [2021-08-27 14:12:49,989 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:12:49,991 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 0 states and 0 transitions. [2021-08-27 14:12:49,991 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 14:12:49,992 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 14:12:49,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 14:12:49,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:12:49,992 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:12:49,992 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:12:49,992 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:12:49,993 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 14:12:49,993 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 14:12:49,993 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:12:49,993 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 14:12:49,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 02:12:49 BoogieIcfgContainer [2021-08-27 14:12:49,997 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 14:12:49,998 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 14:12:49,998 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 14:12:49,998 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 14:12:49,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:12:48" (3/4) ... [2021-08-27 14:12:50,000 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 14:12:50,001 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 14:12:50,002 INFO L168 Benchmark]: Toolchain (without parser) took 1515.83 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 43.8 MB in the beginning and 36.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 25.9 MB. Max. memory is 16.1 GB. [2021-08-27 14:12:50,003 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 44.0 MB. Free memory was 26.3 MB in the beginning and 26.2 MB in the end (delta: 42.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:12:50,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.96 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 34.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 14:12:50,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.43 ms. Allocated memory is still 60.8 MB. Free memory was 34.9 MB in the beginning and 45.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 14:12:50,004 INFO L168 Benchmark]: Boogie Preprocessor took 12.88 ms. Allocated memory is still 60.8 MB. Free memory was 45.3 MB in the beginning and 44.5 MB in the end (delta: 807.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:12:50,005 INFO L168 Benchmark]: RCFGBuilder took 198.91 ms. Allocated memory is still 60.8 MB. Free memory was 44.3 MB in the beginning and 36.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 14:12:50,005 INFO L168 Benchmark]: BuchiAutomizer took 1052.57 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 36.1 MB in the beginning and 36.8 MB in the end (delta: -713.0 kB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2021-08-27 14:12:50,006 INFO L168 Benchmark]: Witness Printer took 3.03 ms. Allocated memory is still 79.7 MB. Free memory is still 36.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:12:50,008 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 44.0 MB. Free memory was 26.3 MB in the beginning and 26.2 MB in the end (delta: 42.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 182.96 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 34.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.43 ms. Allocated memory is still 60.8 MB. Free memory was 34.9 MB in the beginning and 45.3 MB in the end (delta: -10.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 12.88 ms. Allocated memory is still 60.8 MB. Free memory was 45.3 MB in the beginning and 44.5 MB in the end (delta: 807.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 198.91 ms. Allocated memory is still 60.8 MB. Free memory was 44.3 MB in the beginning and 36.1 MB in the end (delta: 8.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1052.57 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 36.1 MB in the beginning and 36.8 MB in the end (delta: -713.0 kB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.03 ms. Allocated memory is still 79.7 MB. Free memory is still 36.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function y and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. 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 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 4 SDslu, 3 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax152 hnf100 lsp28 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 80ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 14:12:50,040 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 [2021-08-27 14:12:50,261 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...