./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-15/cstrlen_diffterm_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-15/cstrlen_diffterm_alloca.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4a8b6acf5c3e1a62f919c5785e272fd1a6b568e6 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 14:32:29,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 14:32:29,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 14:32:29,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 14:32:29,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 14:32:29,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 14:32:29,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 14:32:29,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 14:32:29,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 14:32:29,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 14:32:29,481 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 14:32:29,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 14:32:29,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 14:32:29,484 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 14:32:29,485 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 14:32:29,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 14:32:29,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 14:32:29,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 14:32:29,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 14:32:29,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 14:32:29,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 14:32:29,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 14:32:29,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 14:32:29,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 14:32:29,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 14:32:29,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 14:32:29,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 14:32:29,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 14:32:29,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 14:32:29,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 14:32:29,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 14:32:29,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 14:32:29,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 14:32:29,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 14:32:29,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 14:32:29,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 14:32:29,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 14:32:29,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 14:32:29,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 14:32:29,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 14:32:29,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 14:32:29,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-08-27 14:32:29,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 14:32:29,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 14:32:29,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 14:32:29,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 14:32:29,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 14:32:29,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 14:32:29,556 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 14:32:29,556 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 14:32:29,556 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 14:32:29,556 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 14:32:29,557 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 14:32:29,557 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 14:32:29,557 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 14:32:29,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 14:32:29,557 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 14:32:29,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 14:32:29,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 14:32:29,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 14:32:29,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 14:32:29,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 14:32:29,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 14:32:29,558 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 14:32:29,558 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 14:32:29,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 14:32:29,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 14:32:29,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 14:32:29,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 14:32:29,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 14:32:29,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 14:32:29,559 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 14:32:29,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a8b6acf5c3e1a62f919c5785e272fd1a6b568e6 [2021-08-27 14:32:29,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 14:32:29,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 14:32:29,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 14:32:29,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 14:32:29,803 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 14:32:29,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-15/cstrlen_diffterm_alloca.i [2021-08-27 14:32:29,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1259d1708/55e9724556644b3cbe7dad22b98ace16/FLAG37c2f398b [2021-08-27 14:32:30,196 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 14:32:30,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-15/cstrlen_diffterm_alloca.i [2021-08-27 14:32:30,208 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1259d1708/55e9724556644b3cbe7dad22b98ace16/FLAG37c2f398b [2021-08-27 14:32:30,596 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1259d1708/55e9724556644b3cbe7dad22b98ace16 [2021-08-27 14:32:30,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 14:32:30,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 14:32:30,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 14:32:30,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 14:32:30,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 14:32:30,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:32:30" (1/1) ... [2021-08-27 14:32:30,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5257a132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30, skipping insertion in model container [2021-08-27 14:32:30,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:32:30" (1/1) ... [2021-08-27 14:32:30,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 14:32:30,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 14:32:30,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:32:30,837 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 14:32:30,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 14:32:30,894 INFO L208 MainTranslator]: Completed translation [2021-08-27 14:32:30,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30 WrapperNode [2021-08-27 14:32:30,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 14:32:30,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 14:32:30,896 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 14:32:30,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 14:32:30,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30" (1/1) ... [2021-08-27 14:32:30,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30" (1/1) ... [2021-08-27 14:32:30,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 14:32:30,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 14:32:30,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 14:32:30,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 14:32:30,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30" (1/1) ... [2021-08-27 14:32:30,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30" (1/1) ... [2021-08-27 14:32:30,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30" (1/1) ... [2021-08-27 14:32:30,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30" (1/1) ... [2021-08-27 14:32:30,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30" (1/1) ... [2021-08-27 14:32:30,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30" (1/1) ... [2021-08-27 14:32:30,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30" (1/1) ... [2021-08-27 14:32:30,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 14:32:30,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 14:32:30,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 14:32:30,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 14:32:30,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30" (1/1) ... [2021-08-27 14:32:30,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:32:30,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:32:30,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:32:30,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 14:32:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-27 14:32:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-27 14:32:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 14:32:31,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 14:32:31,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 14:32:31,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 14:32:31,184 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 14:32:31,196 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-27 14:32:31,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:32:31 BoogieIcfgContainer [2021-08-27 14:32:31,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 14:32:31,199 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 14:32:31,199 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 14:32:31,201 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 14:32:31,202 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:32:31,202 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 02:32:30" (1/3) ... [2021-08-27 14:32:31,202 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@658cc258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:32:31, skipping insertion in model container [2021-08-27 14:32:31,202 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:32:31,203 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:32:30" (2/3) ... [2021-08-27 14:32:31,203 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@658cc258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 02:32:31, skipping insertion in model container [2021-08-27 14:32:31,203 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 14:32:31,203 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:32:31" (3/3) ... [2021-08-27 14:32:31,204 INFO L389 chiAutomizerObserver]: Analyzing ICFG cstrlen_diffterm_alloca.i [2021-08-27 14:32:31,259 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 14:32:31,260 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 14:32:31,260 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 14:32:31,260 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 14:32:31,260 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 14:32:31,260 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 14:32:31,260 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 14:32:31,260 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 14:32:31,281 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:32:31,292 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 14:32:31,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:32:31,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:32:31,304 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-27 14:32:31,305 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 14:32:31,305 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 14:32:31,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:32:31,306 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-08-27 14:32:31,320 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 14:32:31,321 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 14:32:31,321 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-08-27 14:32:31,321 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-08-27 14:32:31,325 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 9#L-1true havoc main_#res;havoc main_#t~nondet207, main_#t~malloc208.base, main_#t~malloc208.offset, main_#t~ret209, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet207;havoc main_#t~nondet207; 12#L373true assume !(main_~length1~0 < 1); 10#L373-2true call main_#t~malloc208.base, main_#t~malloc208.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc208.base, main_#t~malloc208.offset;call write~int(49, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);cstrlen_#in~s.base, cstrlen_#in~s.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~post206.base, cstrlen_#t~post206.offset, cstrlen_#t~mem205, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 3#L367-3true [2021-08-27 14:32:31,326 INFO L793 eck$LassoCheckResult]: Loop: 3#L367-3true call cstrlen_#t~mem205 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 11#L367-1true assume !!(49 != cstrlen_#t~mem205);havoc cstrlen_#t~mem205;cstrlen_#t~post206.base, cstrlen_#t~post206.offset := cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_#t~post206.base, 1 + cstrlen_#t~post206.offset;havoc cstrlen_#t~post206.base, cstrlen_#t~post206.offset; 3#L367-3true [2021-08-27 14:32:31,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:32:31,329 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2021-08-27 14:32:31,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:32:31,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13354815] [2021-08-27 14:32:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:32:31,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:32:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:32:31,443 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:32:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:32:31,483 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:32:31,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:32:31,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1414, now seen corresponding path program 1 times [2021-08-27 14:32:31,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:32:31,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247580619] [2021-08-27 14:32:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:32:31,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:32:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:32:31,506 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:32:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:32:31,516 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:32:31,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:32:31,521 INFO L82 PathProgramCache]: Analyzing trace with hash 889568362, now seen corresponding path program 1 times [2021-08-27 14:32:31,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 14:32:31,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258214474] [2021-08-27 14:32:31,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 14:32:31,523 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 14:32:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:32:31,548 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 14:32:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 14:32:31,583 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 14:32:31,931 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 14:32:31,932 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 14:32:31,932 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 14:32:31,932 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 14:32:31,932 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 14:32:31,932 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:32:31,932 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 14:32:31,932 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 14:32:31,932 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen_diffterm_alloca.i_Iteration1_Lasso [2021-08-27 14:32:31,932 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 14:32:31,933 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 14:32:31,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:32:32,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:32:32,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:32:32,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:32:32,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:32:32,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:32:32,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:32:32,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:32:32,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:32:32,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 14:32:32,354 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 14:32:32,356 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 14:32:32,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:32:32,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:32:32,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:32:32,368 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:32:32,374 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:32:32,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:32:32,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:32:32,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:32:32,378 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:32:32,378 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:32:32,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 14:32:32,391 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:32:32,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 14:32:32,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:32:32,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:32:32,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:32:32,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 14:32:32,412 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 [2021-08-27 14:32:32,418 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:32:32,418 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:32:32,418 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:32:32,418 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:32:32,426 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:32:32,426 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:32:32,443 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:32:32,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 14:32:32,461 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:32:32,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:32:32,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:32:32,466 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:32:32,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:32:32,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:32:32,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:32:32,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:32:32,474 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:32:32,474 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:32:32,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 14:32:32,486 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 14:32:32,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 14:32:32,504 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:32:32,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:32:32,507 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:32:32,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 14:32:32,511 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 14:32:32,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 14:32:32,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 14:32:32,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 14:32:32,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 14:32:32,527 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-08-27 14:32:32,527 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-08-27 14:32:32,539 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 14:32:32,577 INFO L443 ModelExtractionUtils]: Simplification made 13 calls to the SMT solver. [2021-08-27 14:32:32,577 INFO L444 ModelExtractionUtils]: 6 out of 28 variables were initially zero. Simplification set additionally 19 variables to zero. [2021-08-27 14:32:32,578 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 14:32:32,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 14:32:32,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 14:32:32,610 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 14:32:32,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-27 14:32:32,638 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2021-08-27 14:32:32,638 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 14:32:32,639 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc208.base)_1, ULTIMATE.start_cstrlen_~p~0.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc208.base)_1 - 1*ULTIMATE.start_cstrlen_~p~0.offset Supporting invariants [] [2021-08-27 14:32:32,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 14:32:32,676 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2021-08-27 14:32:32,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 14:32:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:32:32,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-27 14:32:32,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:32:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 14:32:32,749 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-27 14:32:32,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 14:32:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 14:32:32,787 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-08-27 14:32:32,788 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:32:32,833 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 20 states and 23 transitions. Complement of second has 6 states. [2021-08-27 14:32:32,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 14:32:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 14:32:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-08-27 14:32:32,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2021-08-27 14:32:32,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:32:32,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 2 letters. [2021-08-27 14:32:32,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:32:32,836 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 4 letters. [2021-08-27 14:32:32,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 14:32:32,837 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2021-08-27 14:32:32,840 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:32:32,861 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2021-08-27 14:32:32,862 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 14:32:32,862 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 14:32:32,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 14:32:32,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 14:32:32,862 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:32:32,862 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:32:32,862 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 14:32:32,862 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 14:32:32,862 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 14:32:32,862 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 14:32:32,862 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 14:32:32,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 02:32:32 BoogieIcfgContainer [2021-08-27 14:32:32,866 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 14:32:32,869 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 14:32:32,869 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 14:32:32,869 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 14:32:32,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:32:31" (3/4) ... [2021-08-27 14:32:32,871 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 14:32:32,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 14:32:32,874 INFO L168 Benchmark]: Toolchain (without parser) took 2271.43 ms. Allocated memory was 50.3 MB in the beginning and 88.1 MB in the end (delta: 37.7 MB). Free memory was 24.6 MB in the beginning and 66.4 MB in the end (delta: -41.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:32:32,874 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 50.3 MB. Free memory was 31.1 MB in the beginning and 31.0 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:32:32,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.88 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 24.3 MB in the beginning and 41.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-08-27 14:32:32,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.90 ms. Allocated memory is still 73.4 MB. Free memory was 41.7 MB in the beginning and 39.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 14:32:32,875 INFO L168 Benchmark]: Boogie Preprocessor took 14.75 ms. Allocated memory is still 73.4 MB. Free memory was 39.9 MB in the beginning and 38.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 14:32:32,876 INFO L168 Benchmark]: RCFGBuilder took 261.36 ms. Allocated memory is still 73.4 MB. Free memory was 38.5 MB in the beginning and 46.8 MB in the end (delta: -8.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 14:32:32,880 INFO L168 Benchmark]: BuchiAutomizer took 1666.68 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 46.8 MB in the beginning and 66.7 MB in the end (delta: -19.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:32:32,880 INFO L168 Benchmark]: Witness Printer took 2.02 ms. Allocated memory is still 88.1 MB. Free memory is still 66.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 14:32:32,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-27 14:32:32,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 50.3 MB. Free memory was 31.1 MB in the beginning and 31.0 MB in the end (delta: 30.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.88 ms. Allocated memory was 50.3 MB in the beginning and 73.4 MB in the end (delta: 23.1 MB). Free memory was 24.3 MB in the beginning and 41.7 MB in the end (delta: -17.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.90 ms. Allocated memory is still 73.4 MB. Free memory was 41.7 MB in the beginning and 39.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.75 ms. Allocated memory is still 73.4 MB. Free memory was 39.9 MB in the beginning and 38.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 261.36 ms. Allocated memory is still 73.4 MB. Free memory was 38.5 MB in the beginning and 46.8 MB in the end (delta: -8.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1666.68 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 46.8 MB in the beginning and 66.7 MB in the end (delta: -19.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.02 ms. Allocated memory is still 88.1 MB. Free memory is still 66.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#length-unknown[__builtin_alloca(length1 * sizeof(char))] + -1 * p and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. 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 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 6 SDtfs, 6 SDslu, 1 SDs, 0 SdLazy, 9 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.8ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital114 mio100 ax100 hnf100 lsp94 ukn91 mio100 lsp47 div100 bol100 ite100 ukn100 eq189 hnf88 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 14:32:32,910 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...