./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/cstrlen.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a31fd051 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-crafted-lit/cstrlen.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 7f47a3aedd406a69ab1753c1c4707697df0dbc0cdff682f67fd1c090787641f6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 14:14:18,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 14:14:18,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 14:14:18,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 14:14:18,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 14:14:18,673 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 14:14:18,675 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 14:14:18,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 14:14:18,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 14:14:18,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 14:14:18,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 14:14:18,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 14:14:18,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 14:14:18,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 14:14:18,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 14:14:18,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 14:14:18,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 14:14:18,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 14:14:18,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 14:14:18,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 14:14:18,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 14:14:18,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 14:14:18,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 14:14:18,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 14:14:18,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 14:14:18,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 14:14:18,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 14:14:18,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 14:14:18,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 14:14:18,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 14:14:18,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 14:14:18,715 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 14:14:18,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 14:14:18,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 14:14:18,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 14:14:18,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 14:14:18,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 14:14:18,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 14:14:18,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 14:14:18,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 14:14:18,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 14:14:18,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 14:14:18,737 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 14:14:18,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 14:14:18,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 14:14:18,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 14:14:18,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 14:14:18,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 14:14:18,739 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 14:14:18,739 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 14:14:18,740 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 14:14:18,740 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 14:14:18,740 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 14:14:18,740 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 14:14:18,740 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 14:14:18,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 14:14:18,741 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 14:14:18,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 14:14:18,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 14:14:18,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 14:14:18,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 14:14:18,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 14:14:18,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 14:14:18,742 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 14:14:18,743 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 14:14:18,743 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 14:14:18,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 14:14:18,743 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 14:14:18,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 14:14:18,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 14:14:18,745 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 14:14:18,745 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f47a3aedd406a69ab1753c1c4707697df0dbc0cdff682f67fd1c090787641f6 [2023-02-15 14:14:18,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 14:14:18,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 14:14:18,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 14:14:18,947 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 14:14:18,948 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 14:14:18,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2023-02-15 14:14:20,077 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 14:14:20,245 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 14:14:20,246 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2023-02-15 14:14:20,250 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa7d8eacf/2ecf48b3340144b381a588204bf8078a/FLAGf93681a81 [2023-02-15 14:14:20,262 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa7d8eacf/2ecf48b3340144b381a588204bf8078a [2023-02-15 14:14:20,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 14:14:20,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 14:14:20,266 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 14:14:20,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 14:14:20,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 14:14:20,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35954716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20, skipping insertion in model container [2023-02-15 14:14:20,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 14:14:20,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 14:14:20,407 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 14:14:20,418 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 14:14:20,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 14:14:20,439 INFO L208 MainTranslator]: Completed translation [2023-02-15 14:14:20,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20 WrapperNode [2023-02-15 14:14:20,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 14:14:20,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 14:14:20,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 14:14:20,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 14:14:20,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,452 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,465 INFO L138 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 36 [2023-02-15 14:14:20,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 14:14:20,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 14:14:20,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 14:14:20,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 14:14:20,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,483 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 14:14:20,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 14:14:20,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 14:14:20,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 14:14:20,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20" (1/1) ... [2023-02-15 14:14:20,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:14:20,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:14:20,519 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 14:14:20,528 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 14:14:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 14:14:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 14:14:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 14:14:20,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 14:14:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 14:14:20,624 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 14:14:20,626 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 14:14:20,726 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 14:14:20,731 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 14:14:20,731 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 14:14:20,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:14:20 BoogieIcfgContainer [2023-02-15 14:14:20,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 14:14:20,736 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 14:14:20,737 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 14:14:20,740 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 14:14:20,741 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:14:20,744 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 02:14:20" (1/3) ... [2023-02-15 14:14:20,745 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7316e5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:14:20, skipping insertion in model container [2023-02-15 14:14:20,746 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:14:20,746 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:14:20" (2/3) ... [2023-02-15 14:14:20,746 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7316e5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:14:20, skipping insertion in model container [2023-02-15 14:14:20,746 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:14:20,746 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:14:20" (3/3) ... [2023-02-15 14:14:20,748 INFO L332 chiAutomizerObserver]: Analyzing ICFG cstrlen.c [2023-02-15 14:14:20,820 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 14:14:20,820 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 14:14:20,820 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 14:14:20,820 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 14:14:20,821 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 14:14:20,821 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 14:14:20,821 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 14:14:20,821 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 14:14:20,826 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:14:20,846 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:14:20,846 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:14:20,846 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:14:20,850 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-02-15 14:14:20,851 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 14:14:20,851 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 14:14:20,851 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 14:14:20,854 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-15 14:14:20,854 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:14:20,854 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:14:20,855 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-02-15 14:14:20,855 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-15 14:14:20,862 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret4#1.base, main_#t~ret4#1.offset, main_#t~ret5#1;assume { :begin_inline_build_nondet_String } true;havoc build_nondet_String_#res#1.base, build_nondet_String_#res#1.offset;havoc build_nondet_String_#t~nondet0#1, build_nondet_String_#t~malloc1#1.base, build_nondet_String_#t~malloc1#1.offset, build_nondet_String_~length~0#1, build_nondet_String_~nondetString~0#1.base, build_nondet_String_~nondetString~0#1.offset;build_nondet_String_~length~0#1 := build_nondet_String_#t~nondet0#1;havoc build_nondet_String_#t~nondet0#1; 9#L14true assume !(build_nondet_String_~length~0#1 < 1); 10#L14-2true call build_nondet_String_#t~malloc1#1.base, build_nondet_String_#t~malloc1#1.offset := #Ultimate.allocOnHeap(build_nondet_String_~length~0#1 % 18446744073709551616);build_nondet_String_~nondetString~0#1.base, build_nondet_String_~nondetString~0#1.offset := build_nondet_String_#t~malloc1#1.base, build_nondet_String_#t~malloc1#1.offset;havoc build_nondet_String_#t~malloc1#1.base, build_nondet_String_#t~malloc1#1.offset;call write~int(0, build_nondet_String_~nondetString~0#1.base, build_nondet_String_~nondetString~0#1.offset + (build_nondet_String_~length~0#1 - 1), 1);build_nondet_String_#res#1.base, build_nondet_String_#res#1.offset := build_nondet_String_~nondetString~0#1.base, build_nondet_String_~nondetString~0#1.offset; 2#build_nondet_String_returnLabel#1true main_#t~ret4#1.base, main_#t~ret4#1.offset := build_nondet_String_#res#1.base, build_nondet_String_#res#1.offset;assume { :end_inline_build_nondet_String } true;assume { :begin_inline_cstrlen } true;cstrlen_#in~s#1.base, cstrlen_#in~s#1.offset := main_#t~ret4#1.base, main_#t~ret4#1.offset;havoc cstrlen_#res#1;havoc cstrlen_#t~post3#1.base, cstrlen_#t~post3#1.offset, cstrlen_#t~mem2#1, cstrlen_~s#1.base, cstrlen_~s#1.offset, cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset;cstrlen_~s#1.base, cstrlen_~s#1.offset := cstrlen_#in~s#1.base, cstrlen_#in~s#1.offset;cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset := cstrlen_~s#1.base, cstrlen_~s#1.offset; 11#L30-3true [2023-02-15 14:14:20,863 INFO L750 eck$LassoCheckResult]: Loop: 11#L30-3true call cstrlen_#t~mem2#1 := read~int(cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset, 1); 3#L30-1true assume !!(0 != cstrlen_#t~mem2#1);havoc cstrlen_#t~mem2#1;cstrlen_#t~post3#1.base, cstrlen_#t~post3#1.offset := cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset;cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset := cstrlen_#t~post3#1.base, 1 + cstrlen_#t~post3#1.offset;havoc cstrlen_#t~post3#1.base, cstrlen_#t~post3#1.offset; 11#L30-3true [2023-02-15 14:14:20,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:14:20,873 INFO L85 PathProgramCache]: Analyzing trace with hash 28695750, now seen corresponding path program 1 times [2023-02-15 14:14:20,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:14:20,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999270538] [2023-02-15 14:14:20,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:14:20,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:14:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:14:21,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:14:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:14:21,057 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:14:21,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:14:21,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1478, now seen corresponding path program 1 times [2023-02-15 14:14:21,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:14:21,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672857676] [2023-02-15 14:14:21,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:14:21,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:14:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:14:21,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:14:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:14:21,077 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:14:21,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:14:21,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812491, now seen corresponding path program 1 times [2023-02-15 14:14:21,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:14:21,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657773371] [2023-02-15 14:14:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:14:21,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:14:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:14:21,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:14:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:14:21,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:14:21,613 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:14:21,613 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:14:21,613 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:14:21,614 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:14:21,614 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 14:14:21,614 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:14:21,614 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:14:21,614 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:14:21,614 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen.c_Iteration1_Lasso [2023-02-15 14:14:21,614 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:14:21,615 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:14:21,633 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 14:14:21,875 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 14:14:21,878 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 14:14:21,880 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 14:14:21,883 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 14:14:21,885 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 14:14:21,887 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 14:14:21,890 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 14:14:21,892 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 14:14:21,895 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 14:14:21,900 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 14:14:21,903 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 14:14:22,341 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:14:22,344 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 14:14:22,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:14:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:14:22,353 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 14:14:22,360 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 14:14:22,361 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 14:14:22,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:14:22,369 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:14:22,369 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:14:22,369 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:14:22,375 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:14:22,375 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:14:22,389 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:14:22,394 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 14:14:22,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:14:22,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:14:22,395 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 14:14:22,412 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 14:14:22,420 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:14:22,421 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:14:22,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:14:22,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:14:22,422 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 14:14:22,433 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:14:22,433 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:14:22,452 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 14:14:22,478 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2023-02-15 14:14:22,478 INFO L444 ModelExtractionUtils]: 7 out of 31 variables were initially zero. Simplification set additionally 21 variables to zero. [2023-02-15 14:14:22,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:14:22,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:14:22,536 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 14:14:22,568 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 14:14:22,576 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 14:14:22,590 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2023-02-15 14:14:22,590 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 14:14:22,591 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0#1.offset, v_rep(select #length ULTIMATE.start_build_nondet_String_~nondetString~0#1.base)_1) = -1*ULTIMATE.start_cstrlen_~p~0#1.offset + 1*v_rep(select #length ULTIMATE.start_build_nondet_String_~nondetString~0#1.base)_1 Supporting invariants [] [2023-02-15 14:14:22,601 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 14:14:22,618 INFO L156 tatePredicateManager]: 2 out of 3 supporting invariants were superfluous and have been removed [2023-02-15 14:14:22,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:14:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:14:22,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 14:14:22,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:14:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:14:22,718 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 14:14:22,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:14:22,743 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 14:14:22,781 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2023-02-15 14:14:22,783 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2023-02-15 14:14:22,836 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 27 transitions. Complement of second has 6 states. [2023-02-15 14:14:22,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-15 14:14:22,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2023-02-15 14:14:22,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2023-02-15 14:14:22,846 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-15 14:14:22,847 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:14:22,847 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 2 letters. [2023-02-15 14:14:22,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:14:22,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 4 letters. [2023-02-15 14:14:22,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:14:22,849 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 27 transitions. [2023-02-15 14:14:22,852 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 14:14:22,854 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2023-02-15 14:14:22,855 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-15 14:14:22,855 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-15 14:14:22,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-15 14:14:22,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 14:14:22,856 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 14:14:22,856 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 14:14:22,856 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 14:14:22,856 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-15 14:14:22,856 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-15 14:14:22,857 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 14:14:22,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-15 14:14:22,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 02:14:22 BoogieIcfgContainer [2023-02-15 14:14:22,869 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 14:14:22,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 14:14:22,870 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 14:14:22,871 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 14:14:22,871 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:14:20" (3/4) ... [2023-02-15 14:14:22,873 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 14:14:22,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 14:14:22,875 INFO L158 Benchmark]: Toolchain (without parser) took 2608.44ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 86.7MB in the beginning and 97.6MB in the end (delta: -10.9MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2023-02-15 14:14:22,876 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 132.1MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:14:22,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.72ms. Allocated memory is still 132.1MB. Free memory was 86.7MB in the beginning and 76.8MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 14:14:22,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.27ms. Allocated memory is still 132.1MB. Free memory was 76.8MB in the beginning and 75.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 14:14:22,879 INFO L158 Benchmark]: Boogie Preprocessor took 19.67ms. Allocated memory is still 132.1MB. Free memory was 75.6MB in the beginning and 74.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 14:14:22,883 INFO L158 Benchmark]: RCFGBuilder took 246.81ms. Allocated memory is still 132.1MB. Free memory was 74.1MB in the beginning and 64.3MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 14:14:22,883 INFO L158 Benchmark]: BuchiAutomizer took 2133.03ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 64.3MB in the beginning and 97.6MB in the end (delta: -33.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:14:22,884 INFO L158 Benchmark]: Witness Printer took 3.05ms. Allocated memory is still 159.4MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:14:22,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 132.1MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.72ms. Allocated memory is still 132.1MB. Free memory was 86.7MB in the beginning and 76.8MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.27ms. Allocated memory is still 132.1MB. Free memory was 76.8MB in the beginning and 75.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.67ms. Allocated memory is still 132.1MB. Free memory was 75.6MB in the beginning and 74.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 246.81ms. Allocated memory is still 132.1MB. Free memory was 74.1MB in the beginning and 64.3MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2133.03ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 64.3MB in the beginning and 97.6MB in the end (delta: -33.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.05ms. Allocated memory is still 159.4MB. Free memory is still 97.6MB. 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 unknown-#length-unknown[nondetString] + -1 * p and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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, 9 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 9 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital132 mio100 ax100 hnf100 lsp95 ukn92 mio100 lsp49 div164 bol100 ite100 ukn100 eq165 hnf100 smp68 dnf97 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 43ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s 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 14:14:22,906 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 14:14:23,110 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