./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-dietlibc/wcsstr.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-dietlibc/wcsstr.i -s /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer --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 a42eedf37918bfaebd682f32b41eb77361e43f9a ........................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:56:36,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:56:36,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:56:36,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:56:36,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:56:36,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:56:36,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:56:36,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:56:36,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:56:36,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:56:36,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:56:36,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:56:36,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:56:36,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:56:36,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:56:36,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:56:36,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:56:36,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:56:36,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:56:36,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:56:36,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:56:36,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:56:36,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:56:36,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:56:36,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:56:36,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:56:36,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:56:36,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:56:36,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:56:36,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:56:36,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:56:36,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:56:36,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:56:36,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:56:36,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:56:36,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:56:36,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:56:36,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:56:36,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:56:36,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:56:36,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:56:36,412 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 23:56:36,435 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:56:36,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:56:36,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:56:36,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:56:36,437 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:56:36,438 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 23:56:36,438 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 23:56:36,438 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 23:56:36,438 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 23:56:36,438 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 23:56:36,439 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 23:56:36,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:56:36,439 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:56:36,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:56:36,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:56:36,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 23:56:36,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 23:56:36,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 23:56:36,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:56:36,441 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 23:56:36,441 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:56:36,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 23:56:36,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:56:36,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:56:36,442 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 23:56:36,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:56:36,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:56:36,443 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:56:36,443 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 23:56:36,444 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 23:56:36,444 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:/tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a42eedf37918bfaebd682f32b41eb77361e43f9a [2020-11-29 23:56:36,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:56:36,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:56:36,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:56:36,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:56:36,726 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:56:36,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer/../../sv-benchmarks/c/termination-dietlibc/wcsstr.i [2020-11-29 23:56:36,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer/data/8fc1c17d6/85b9d678ada74b168ec8140e7067152a/FLAG33449bde3 [2020-11-29 23:56:37,312 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:56:37,313 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/sv-benchmarks/c/termination-dietlibc/wcsstr.i [2020-11-29 23:56:37,326 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer/data/8fc1c17d6/85b9d678ada74b168ec8140e7067152a/FLAG33449bde3 [2020-11-29 23:56:37,662 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer/data/8fc1c17d6/85b9d678ada74b168ec8140e7067152a [2020-11-29 23:56:37,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:56:37,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:56:37,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:56:37,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:56:37,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:56:37,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:56:37" (1/1) ... [2020-11-29 23:56:37,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@732b47ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:37, skipping insertion in model container [2020-11-29 23:56:37,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:56:37" (1/1) ... [2020-11-29 23:56:37,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:56:37,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:56:38,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:56:38,070 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:56:38,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:56:38,174 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:56:38,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:38 WrapperNode [2020-11-29 23:56:38,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:56:38,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:56:38,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:56:38,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:56:38,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:38" (1/1) ... [2020-11-29 23:56:38,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:38" (1/1) ... [2020-11-29 23:56:38,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:56:38,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:56:38,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:56:38,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:56:38,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:38" (1/1) ... [2020-11-29 23:56:38,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:38" (1/1) ... [2020-11-29 23:56:38,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:38" (1/1) ... [2020-11-29 23:56:38,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:38" (1/1) ... [2020-11-29 23:56:38,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:38" (1/1) ... [2020-11-29 23:56:38,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:38" (1/1) ... [2020-11-29 23:56:38,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:38" (1/1) ... [2020-11-29 23:56:38,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:56:38,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:56:38,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:56:38,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:56:38,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42381ec0-bad5-4a9f-b59a-533ce57f7f02/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 23:56:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:56:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:56:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:56:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:56:38,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:56:38,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:56:38,773 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:56:38,775 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-29 23:56:38,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:38 BoogieIcfgContainer [2020-11-29 23:56:38,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:56:38,778 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 23:56:38,784 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 23:56:38,787 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 23:56:38,788 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:56:38,788 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 11:56:37" (1/3) ... [2020-11-29 23:56:38,789 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b17cec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:56:38, skipping insertion in model container [2020-11-29 23:56:38,789 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:56:38,789 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:56:38" (2/3) ... [2020-11-29 23:56:38,792 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b17cec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 11:56:38, skipping insertion in model container [2020-11-29 23:56:38,792 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 23:56:38,792 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:38" (3/3) ... [2020-11-29 23:56:38,793 INFO L373 chiAutomizerObserver]: Analyzing ICFG wcsstr.i [2020-11-29 23:56:38,842 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 23:56:38,842 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 23:56:38,843 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 23:56:38,843 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:56:38,843 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:56:38,843 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 23:56:38,843 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:56:38,844 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 23:56:38,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-11-29 23:56:38,869 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-29 23:56:38,869 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:56:38,869 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:56:38,892 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 23:56:38,892 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:56:38,892 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 23:56:38,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-11-29 23:56:38,894 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-29 23:56:38,894 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 23:56:38,894 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 23:56:38,895 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 23:56:38,895 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-29 23:56:38,900 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet10, main_#t~malloc11.base, main_#t~malloc11.offset, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~ret14.base, main_#t~ret14.offset, main_~in_len~0, main_~hay~0.base, main_~hay~0.offset, main_~out_len~0, main_~needle~0.base, main_~needle~0.offset;main_~in_len~0 := main_#t~nondet10;havoc main_#t~nondet10; 3#L516true assume !(main_~in_len~0 < 1);call main_#t~malloc11.base, main_#t~malloc11.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~hay~0.base, main_~hay~0.offset := main_#t~malloc11.base, main_#t~malloc11.offset;call write~int(0, main_~hay~0.base, main_~hay~0.offset + 4 * (main_~in_len~0 - 1), 4);main_~out_len~0 := main_#t~nondet12;havoc main_#t~nondet12; 15#L520true assume !(main_~out_len~0 < 1);call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~needle~0.base, main_~needle~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call write~int(0, main_~needle~0.base, main_~needle~0.offset + 4 * (main_~out_len~0 - 1), 4);wcsstr_#in~haystack.base, wcsstr_#in~haystack.offset, wcsstr_#in~needle.base, wcsstr_#in~needle.offset := main_~hay~0.base, main_~hay~0.offset, main_~needle~0.base, main_~needle~0.offset;havoc wcsstr_#res.base, wcsstr_#res.offset;havoc wcsstr_#t~pre3, wcsstr_#t~mem6, wcsstr_#t~mem4, wcsstr_#t~mem5, wcsstr_#t~short7, wcsstr_#t~mem8, wcsstr_#t~pre2, wcsstr_#t~mem9, wcsstr_~haystack.base, wcsstr_~haystack.offset, wcsstr_~needle.base, wcsstr_~needle.offset, wcsstr_~i~0, wcsstr_~j~0;wcsstr_~haystack.base, wcsstr_~haystack.offset := wcsstr_#in~haystack.base, wcsstr_#in~haystack.offset;wcsstr_~needle.base, wcsstr_~needle.offset := wcsstr_#in~needle.base, wcsstr_#in~needle.offset;havoc wcsstr_~i~0;havoc wcsstr_~j~0;wcsstr_~i~0 := 0; 5#L508-4true [2020-11-29 23:56:38,901 INFO L796 eck$LassoCheckResult]: Loop: 5#L508-4true call wcsstr_#t~mem9 := read~int(wcsstr_~haystack.base, wcsstr_~haystack.offset + 4 * (wcsstr_~i~0 % 4294967296), 4); 18#L508-1true assume !!(0 != wcsstr_#t~mem9);havoc wcsstr_#t~mem9;wcsstr_~j~0 := 0; 8#L509-6true assume !true; 9#L509-7true call wcsstr_#t~mem8 := read~int(wcsstr_~needle.base, wcsstr_~needle.offset + 4 * (wcsstr_~j~0 % 4294967296), 4); 13#L510true assume !(0 == wcsstr_#t~mem8);havoc wcsstr_#t~mem8; 4#L508-3true wcsstr_#t~pre2 := 1 + wcsstr_~i~0;wcsstr_~i~0 := 1 + wcsstr_~i~0;havoc wcsstr_#t~pre2; 5#L508-4true [2020-11-29 23:56:38,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:38,906 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-11-29 23:56:38,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:38,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058476318] [2020-11-29 23:56:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:39,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058476318] [2020-11-29 23:56:39,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:39,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:56:39,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492687404] [2020-11-29 23:56:39,014 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 23:56:39,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:39,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1366197546, now seen corresponding path program 1 times [2020-11-29 23:56:39,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:39,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116947092] [2020-11-29 23:56:39,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:39,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:39,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116947092] [2020-11-29 23:56:39,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:39,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:56:39,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361415115] [2020-11-29 23:56:39,039 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 23:56:39,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:39,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:56:39,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:56:39,056 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-29 23:56:39,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:39,060 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-11-29 23:56:39,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:56:39,062 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 5 transitions. [2020-11-29 23:56:39,063 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:56:39,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2020-11-29 23:56:39,066 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 23:56:39,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 23:56:39,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 23:56:39,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 23:56:39,067 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:56:39,067 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:56:39,067 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:56:39,067 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 23:56:39,068 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:56:39,068 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 23:56:39,068 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 23:56:39,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 11:56:39 BoogieIcfgContainer [2020-11-29 23:56:39,073 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 23:56:39,074 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:56:39,074 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:56:39,074 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:56:39,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:56:38" (3/4) ... [2020-11-29 23:56:39,077 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:56:39,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:56:39,079 INFO L168 Benchmark]: Toolchain (without parser) took 1412.82 ms. Allocated memory was 88.1 MB in the beginning and 127.9 MB in the end (delta: 39.8 MB). Free memory was 60.4 MB in the beginning and 94.7 MB in the end (delta: -34.4 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:39,080 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 47.7 MB in the beginning and 47.6 MB in the end (delta: 93.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:39,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 509.67 ms. Allocated memory was 88.1 MB in the beginning and 127.9 MB in the end (delta: 39.8 MB). Free memory was 60.4 MB in the beginning and 94.8 MB in the end (delta: -34.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:39,082 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.45 ms. Allocated memory is still 127.9 MB. Free memory was 94.8 MB in the beginning and 92.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:39,083 INFO L168 Benchmark]: Boogie Preprocessor took 48.43 ms. Allocated memory is still 127.9 MB. Free memory was 92.8 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:56:39,083 INFO L168 Benchmark]: RCFGBuilder took 467.06 ms. Allocated memory is still 127.9 MB. Free memory was 91.3 MB in the beginning and 75.5 MB in the end (delta: 15.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:39,084 INFO L168 Benchmark]: BuchiAutomizer took 294.53 ms. Allocated memory is still 127.9 MB. Free memory was 75.0 MB in the beginning and 95.4 MB in the end (delta: -20.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:56:39,084 INFO L168 Benchmark]: Witness Printer took 3.81 ms. Allocated memory is still 127.9 MB. Free memory is still 94.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:56:39,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 88.1 MB. Free memory was 47.7 MB in the beginning and 47.6 MB in the end (delta: 93.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 509.67 ms. Allocated memory was 88.1 MB in the beginning and 127.9 MB in the end (delta: 39.8 MB). Free memory was 60.4 MB in the beginning and 94.8 MB in the end (delta: -34.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.45 ms. Allocated memory is still 127.9 MB. Free memory was 94.8 MB in the beginning and 92.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.43 ms. Allocated memory is still 127.9 MB. Free memory was 92.8 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 467.06 ms. Allocated memory is still 127.9 MB. Free memory was 91.3 MB in the beginning and 75.5 MB in the end (delta: 15.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 294.53 ms. Allocated memory is still 127.9 MB. Free memory was 75.0 MB in the beginning and 95.4 MB in the end (delta: -20.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.81 ms. Allocated memory is still 127.9 MB. Free memory is still 94.7 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 (1 trivial, 0 deterministic, 0 nondeterministic). 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. 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 [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: 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! Received shutdown request...