./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 35987657 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-?-3598765 [2022-07-22 01:28:57,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 01:28:57,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 01:28:57,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 01:28:57,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 01:28:57,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 01:28:57,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 01:28:57,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 01:28:57,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 01:28:57,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 01:28:57,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 01:28:57,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 01:28:57,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 01:28:57,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 01:28:57,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 01:28:57,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 01:28:57,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 01:28:57,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 01:28:57,315 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 01:28:57,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 01:28:57,322 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 01:28:57,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 01:28:57,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 01:28:57,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 01:28:57,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 01:28:57,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 01:28:57,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 01:28:57,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 01:28:57,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 01:28:57,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 01:28:57,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 01:28:57,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 01:28:57,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 01:28:57,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 01:28:57,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 01:28:57,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 01:28:57,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 01:28:57,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 01:28:57,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 01:28:57,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 01:28:57,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 01:28:57,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 01:28:57,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-22 01:28:57,385 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 01:28:57,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 01:28:57,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 01:28:57,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 01:28:57,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 01:28:57,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 01:28:57,389 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 01:28:57,389 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 01:28:57,389 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 01:28:57,390 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 01:28:57,390 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 01:28:57,390 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 01:28:57,391 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 01:28:57,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 01:28:57,391 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 01:28:57,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 01:28:57,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 01:28:57,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 01:28:57,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 01:28:57,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 01:28:57,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 01:28:57,393 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 01:28:57,393 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 01:28:57,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 01:28:57,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 01:28:57,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 01:28:57,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 01:28:57,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 01:28:57,396 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 01:28:57,397 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f47a3aedd406a69ab1753c1c4707697df0dbc0cdff682f67fd1c090787641f6 [2022-07-22 01:28:57,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 01:28:57,750 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 01:28:57,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 01:28:57,756 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 01:28:57,756 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 01:28:57,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2022-07-22 01:28:57,816 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ca712aa0/2daa239d4e724fa0ba3ec0b334684070/FLAG35e7bced3 [2022-07-22 01:28:58,202 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 01:28:58,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/cstrlen.c [2022-07-22 01:28:58,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ca712aa0/2daa239d4e724fa0ba3ec0b334684070/FLAG35e7bced3 [2022-07-22 01:28:58,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ca712aa0/2daa239d4e724fa0ba3ec0b334684070 [2022-07-22 01:28:58,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 01:28:58,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 01:28:58,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 01:28:58,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 01:28:58,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 01:28:58,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:28:58" (1/1) ... [2022-07-22 01:28:58,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413b1b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58, skipping insertion in model container [2022-07-22 01:28:58,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:28:58" (1/1) ... [2022-07-22 01:28:58,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 01:28:58,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 01:28:58,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:28:58,779 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 01:28:58,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:28:58,811 INFO L208 MainTranslator]: Completed translation [2022-07-22 01:28:58,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58 WrapperNode [2022-07-22 01:28:58,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 01:28:58,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 01:28:58,813 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 01:28:58,813 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 01:28:58,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58" (1/1) ... [2022-07-22 01:28:58,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58" (1/1) ... [2022-07-22 01:28:58,855 INFO L137 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 36 [2022-07-22 01:28:58,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 01:28:58,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 01:28:58,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 01:28:58,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 01:28:58,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58" (1/1) ... [2022-07-22 01:28:58,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58" (1/1) ... [2022-07-22 01:28:58,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58" (1/1) ... [2022-07-22 01:28:58,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58" (1/1) ... [2022-07-22 01:28:58,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58" (1/1) ... [2022-07-22 01:28:58,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58" (1/1) ... [2022-07-22 01:28:58,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58" (1/1) ... [2022-07-22 01:28:58,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 01:28:58,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 01:28:58,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 01:28:58,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 01:28:58,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58" (1/1) ... [2022-07-22 01:28:58,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:28:58,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:28:58,921 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) [2022-07-22 01:28:58,926 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 [2022-07-22 01:28:58,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 01:28:58,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 01:28:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 01:28:58,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 01:28:58,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 01:28:59,006 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 01:28:59,007 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 01:28:59,154 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 01:28:59,159 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 01:28:59,159 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 01:28:59,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:28:59 BoogieIcfgContainer [2022-07-22 01:28:59,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 01:28:59,162 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 01:28:59,162 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 01:28:59,165 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 01:28:59,182 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:28:59,195 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 01:28:58" (1/3) ... [2022-07-22 01:28:59,196 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b7c0189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:28:59, skipping insertion in model container [2022-07-22 01:28:59,197 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:28:59,197 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:28:58" (2/3) ... [2022-07-22 01:28:59,197 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b7c0189 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:28:59, skipping insertion in model container [2022-07-22 01:28:59,197 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:28:59,197 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:28:59" (3/3) ... [2022-07-22 01:28:59,199 INFO L354 chiAutomizerObserver]: Analyzing ICFG cstrlen.c [2022-07-22 01:28:59,270 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 01:28:59,270 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-22 01:28:59,270 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 01:28:59,270 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 01:28:59,270 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 01:28:59,271 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-22 01:28:59,271 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 01:28:59,271 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 01:28:59,279 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) [2022-07-22 01:28:59,299 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-22 01:28:59,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:28:59,300 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:28:59,304 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-22 01:28:59,305 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 01:28:59,305 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 01:28:59,306 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) [2022-07-22 01:28:59,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-07-22 01:28:59,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:28:59,308 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:28:59,309 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-22 01:28:59,309 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-22 01:28:59,315 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 5#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);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; 6#L19true 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 [2022-07-22 01:28:59,316 INFO L754 eck$LassoCheckResult]: Loop: 11#L30-3true call cstrlen_#t~mem2#1 := read~int(cstrlen_~p~0#1.base, cstrlen_~p~0#1.offset, 1); 2#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 [2022-07-22 01:28:59,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:59,325 INFO L85 PathProgramCache]: Analyzing trace with hash 28695750, now seen corresponding path program 1 times [2022-07-22 01:28:59,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:59,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059091427] [2022-07-22 01:28:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:59,457 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:59,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:59,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1478, now seen corresponding path program 1 times [2022-07-22 01:28:59,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:59,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90756298] [2022-07-22 01:28:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:59,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:59,530 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:59,541 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:28:59,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:28:59,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812491, now seen corresponding path program 1 times [2022-07-22 01:28:59,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:28:59,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31877482] [2022-07-22 01:28:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:28:59,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:28:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:59,566 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:28:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:28:59,594 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:29:00,078 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:29:00,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:29:00,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:29:00,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:29:00,080 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:29:00,080 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:29:00,080 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:29:00,080 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:29:00,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen.c_Iteration1_Lasso [2022-07-22 01:29:00,081 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:29:00,081 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:29:00,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:29:00,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:29:00,355 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:29:00,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:29:00,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:29:00,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:29:00,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:29:00,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:29:00,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:29:00,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:29:00,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:29:00,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:29:00,737 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:29:00,743 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:29:00,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:29:00,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:29:00,751 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) [2022-07-22 01:29:00,758 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 [2022-07-22 01:29:00,759 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 [2022-07-22 01:29:00,769 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:29:00,769 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:29:00,769 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:29:00,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:29:00,778 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:29:00,779 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:29:00,792 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:29:00,816 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 [2022-07-22 01:29:00,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:29:00,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:29:00,818 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) [2022-07-22 01:29:00,822 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 [2022-07-22 01:29:00,823 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 [2022-07-22 01:29:00,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:29:00,829 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:29:00,829 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:29:00,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:29:00,844 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:29:00,844 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:29:00,861 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:29:00,879 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2022-07-22 01:29:00,879 INFO L444 ModelExtractionUtils]: 24 out of 31 variables were initially zero. Simplification set additionally 4 variables to zero. [2022-07-22 01:29:00,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:29:00,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:29:00,892 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) [2022-07-22 01:29:00,928 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 [2022-07-22 01:29:00,928 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:29:00,961 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2022-07-22 01:29:00,961 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:29:00,962 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_build_nondet_String_~nondetString~0#1.base)_1, ULTIMATE.start_cstrlen_~p~0#1.offset) = 1*v_rep(select #length ULTIMATE.start_build_nondet_String_~nondetString~0#1.base)_1 - 1*ULTIMATE.start_cstrlen_~p~0#1.offset Supporting invariants [] [2022-07-22 01:29:00,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-07-22 01:29:01,006 INFO L293 tatePredicateManager]: 2 out of 3 supporting invariants were superfluous and have been removed [2022-07-22 01:29:01,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:29:01,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:29:01,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 01:29:01,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:29:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:29:01,096 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 01:29:01,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:29:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:29:01,156 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2022-07-22 01:29:01,157 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) [2022-07-22 01:29:01,218 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. [2022-07-22 01:29:01,219 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 [2022-07-22 01:29:01,224 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) [2022-07-22 01:29:01,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2022-07-22 01:29:01,226 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 2 letters. [2022-07-22 01:29:01,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:29:01,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 2 letters. [2022-07-22 01:29:01,227 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:29:01,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-22 01:29:01,228 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:29:01,228 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 27 transitions. [2022-07-22 01:29:01,230 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 01:29:01,232 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 0 states and 0 transitions. [2022-07-22 01:29:01,233 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-22 01:29:01,233 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-22 01:29:01,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-22 01:29:01,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 01:29:01,234 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:29:01,234 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:29:01,234 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:29:01,234 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-22 01:29:01,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-22 01:29:01,234 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 01:29:01,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-22 01:29:01,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.07 01:29:01 BoogieIcfgContainer [2022-07-22 01:29:01,241 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-22 01:29:01,241 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 01:29:01,241 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 01:29:01,242 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 01:29:01,242 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:28:59" (3/4) ... [2022-07-22 01:29:01,245 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 01:29:01,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 01:29:01,246 INFO L158 Benchmark]: Toolchain (without parser) took 2609.64ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.5MB in the beginning and 29.2MB in the end (delta: 5.3MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2022-07-22 01:29:01,246 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 38.2MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:29:01,247 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.92ms. Allocated memory is still 56.6MB. Free memory was 34.3MB in the beginning and 38.5MB in the end (delta: -4.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-07-22 01:29:01,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.51ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 38.3MB in the beginning and 53.0MB in the end (delta: -14.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 01:29:01,248 INFO L158 Benchmark]: Boogie Preprocessor took 34.74ms. Allocated memory is still 69.2MB. Free memory was 53.0MB in the beginning and 51.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:29:01,249 INFO L158 Benchmark]: RCFGBuilder took 269.07ms. Allocated memory is still 69.2MB. Free memory was 51.7MB in the beginning and 42.7MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 01:29:01,249 INFO L158 Benchmark]: BuchiAutomizer took 2078.69ms. Allocated memory is still 69.2MB. Free memory was 42.4MB in the beginning and 29.6MB in the end (delta: 12.8MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2022-07-22 01:29:01,249 INFO L158 Benchmark]: Witness Printer took 3.66ms. Allocated memory is still 69.2MB. Free memory was 29.6MB in the beginning and 29.2MB in the end (delta: 406.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:29:01,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 56.6MB. Free memory was 38.2MB in the beginning and 38.2MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.92ms. Allocated memory is still 56.6MB. Free memory was 34.3MB in the beginning and 38.5MB in the end (delta: -4.2MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.51ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 38.3MB in the beginning and 53.0MB in the end (delta: -14.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.74ms. Allocated memory is still 69.2MB. Free memory was 53.0MB in the beginning and 51.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 269.07ms. Allocated memory is still 69.2MB. Free memory was 51.7MB in the beginning and 42.7MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2078.69ms. Allocated memory is still 69.2MB. Free memory was 42.4MB in the beginning and 29.6MB in the end (delta: 12.8MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * Witness Printer took 3.66ms. Allocated memory is still 69.2MB. Free memory was 29.6MB in the beginning and 29.2MB in the end (delta: 406.3kB). 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 1.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 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: inital123 mio100 ax100 hnf100 lsp95 ukn93 mio100 lsp45 div100 bol100 ite100 ukn100 eq191 hnf88 smp100 dnf112 smp93 tf100 neg97 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms 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! [2022-07-22 01:29:01,289 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 [2022-07-22 01:29:01,492 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