./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 9a8b2e8d 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_1.3.100.v20150511-1540.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-dietlibc/wcsstr.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 a42eedf37918bfaebd682f32b41eb77361e43f9a ...................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:37:17,201 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:37:17,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:37:17,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:37:17,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:37:17,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:37:17,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:37:17,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:37:17,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:37:17,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:37:17,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:37:17,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:37:17,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:37:17,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:37:17,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:37:17,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:37:17,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:37:17,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:37:17,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:37:17,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:37:17,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:37:17,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:37:17,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:37:17,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:37:17,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:37:17,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:37:17,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:37:17,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:37:17,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:37:17,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:37:17,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:37:17,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:37:17,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:37:17,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:37:17,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:37:17,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:37:17,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:37:17,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:37:17,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:37:17,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:37:17,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:37:17,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-20 06:37:17,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:37:17,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:37:17,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:37:17,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:37:17,305 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:37:17,305 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 06:37:17,305 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 06:37:17,306 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 06:37:17,306 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 06:37:17,306 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 06:37:17,306 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 06:37:17,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:37:17,307 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:37:17,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:37:17,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:37:17,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 06:37:17,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 06:37:17,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 06:37:17,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 06:37:17,308 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 06:37:17,309 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:37:17,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 06:37:17,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:37:17,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:37:17,310 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 06:37:17,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:37:17,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:37:17,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:37:17,311 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 06:37:17,312 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 06:37:17,312 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> a42eedf37918bfaebd682f32b41eb77361e43f9a [2020-10-20 06:37:17,513 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:37:17,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:37:17,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:37:17,547 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:37:17,548 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:37:17,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-dietlibc/wcsstr.i [2020-10-20 06:37:17,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4587851dc/20677fc2be9f497fafd82a2f54ba5dda/FLAG0d7459d3d [2020-10-20 06:37:18,176 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:37:18,177 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-dietlibc/wcsstr.i [2020-10-20 06:37:18,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4587851dc/20677fc2be9f497fafd82a2f54ba5dda/FLAG0d7459d3d [2020-10-20 06:37:18,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4587851dc/20677fc2be9f497fafd82a2f54ba5dda [2020-10-20 06:37:18,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:37:18,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 06:37:18,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:37:18,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:37:18,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:37:18,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:37:18" (1/1) ... [2020-10-20 06:37:18,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d53090d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:18, skipping insertion in model container [2020-10-20 06:37:18,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:37:18" (1/1) ... [2020-10-20 06:37:18,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:37:18,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:37:18,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:37:18,938 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:37:18,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:37:19,046 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:37:19,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:19 WrapperNode [2020-10-20 06:37:19,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:37:19,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 06:37:19,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 06:37:19,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 06:37:19,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:19" (1/1) ... [2020-10-20 06:37:19,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:19" (1/1) ... [2020-10-20 06:37:19,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 06:37:19,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:37:19,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:37:19,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:37:19,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:19" (1/1) ... [2020-10-20 06:37:19,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:19" (1/1) ... [2020-10-20 06:37:19,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:19" (1/1) ... [2020-10-20 06:37:19,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:19" (1/1) ... [2020-10-20 06:37:19,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:19" (1/1) ... [2020-10-20 06:37:19,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:19" (1/1) ... [2020-10-20 06:37:19,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:19" (1/1) ... [2020-10-20 06:37:19,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:37:19,142 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:37:19,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:37:19,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:37:19,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 06:37:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:37:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:37:19,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:37:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:37:19,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:37:19,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:37:19,569 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:37:19,570 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 06:37:19,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:37:19 BoogieIcfgContainer [2020-10-20 06:37:19,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:37:19,572 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 06:37:19,572 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 06:37:19,575 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 06:37:19,576 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:37:19,576 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 06:37:18" (1/3) ... [2020-10-20 06:37:19,577 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b2280d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:37:19, skipping insertion in model container [2020-10-20 06:37:19,577 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:37:19,577 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:37:19" (2/3) ... [2020-10-20 06:37:19,577 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2b2280d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 06:37:19, skipping insertion in model container [2020-10-20 06:37:19,578 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 06:37:19,578 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:37:19" (3/3) ... [2020-10-20 06:37:19,579 INFO L373 chiAutomizerObserver]: Analyzing ICFG wcsstr.i [2020-10-20 06:37:19,638 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 06:37:19,639 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 06:37:19,640 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 06:37:19,641 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:37:19,642 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:37:19,642 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 06:37:19,642 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:37:19,642 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 06:37:19,656 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 06:37:19,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-20 06:37:19,676 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:37:19,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:37:19,682 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:37:19,682 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:37:19,683 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 06:37:19,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 06:37:19,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-10-20 06:37:19,685 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 06:37:19,685 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 06:37:19,685 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-10-20 06:37:19,686 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-10-20 06:37:19,692 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 12#L-1true havoc main_#res;havoc main_#t~nondet10, main_#t~malloc11.base, main_#t~malloc11.offset, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~ret14.base, main_#t~ret14.offset, main_~in_len~0, main_~hay~0.base, main_~hay~0.offset, main_~out_len~0, main_~needle~0.base, main_~needle~0.offset;main_~in_len~0 := main_#t~nondet10;havoc main_#t~nondet10; 3#L516true assume !(main_~in_len~0 < 1);call main_#t~malloc11.base, main_#t~malloc11.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~hay~0.base, main_~hay~0.offset := main_#t~malloc11.base, main_#t~malloc11.offset;call write~int(0, main_~hay~0.base, main_~hay~0.offset + 4 * (main_~in_len~0 - 1), 4);main_~out_len~0 := main_#t~nondet12;havoc main_#t~nondet12; 15#L520true assume !(main_~out_len~0 < 1);call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.allocOnStack(main_~out_len~0);main_~needle~0.base, main_~needle~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call write~int(0, main_~needle~0.base, main_~needle~0.offset + 4 * (main_~out_len~0 - 1), 4);wcsstr_#in~haystack.base, wcsstr_#in~haystack.offset, wcsstr_#in~needle.base, wcsstr_#in~needle.offset := main_~hay~0.base, main_~hay~0.offset, main_~needle~0.base, main_~needle~0.offset;havoc wcsstr_#res.base, wcsstr_#res.offset;havoc wcsstr_#t~pre3, wcsstr_#t~mem6, wcsstr_#t~mem4, wcsstr_#t~mem5, wcsstr_#t~short7, wcsstr_#t~mem8, wcsstr_#t~pre2, wcsstr_#t~mem9, wcsstr_~haystack.base, wcsstr_~haystack.offset, wcsstr_~needle.base, wcsstr_~needle.offset, wcsstr_~i~0, wcsstr_~j~0;wcsstr_~haystack.base, wcsstr_~haystack.offset := wcsstr_#in~haystack.base, wcsstr_#in~haystack.offset;wcsstr_~needle.base, wcsstr_~needle.offset := wcsstr_#in~needle.base, wcsstr_#in~needle.offset;havoc wcsstr_~i~0;havoc wcsstr_~j~0;wcsstr_~i~0 := 0; 5#L508-4true [2020-10-20 06:37:19,693 INFO L796 eck$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 [2020-10-20 06:37:19,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:37:19,699 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2020-10-20 06:37:19,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:37:19,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383072629] [2020-10-20 06:37:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:37:19,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:37:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:37:19,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383072629] [2020-10-20 06:37:19,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:37:19,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:37:19,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412152233] [2020-10-20 06:37:19,838 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-10-20 06:37:19,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:37:19,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1366197546, now seen corresponding path program 1 times [2020-10-20 06:37:19,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:37:19,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627430453] [2020-10-20 06:37:19,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:37:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:37:19,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:37:19,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627430453] [2020-10-20 06:37:19,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:37:19,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 06:37:19,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064948708] [2020-10-20 06:37:19,894 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-10-20 06:37:19,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:37:19,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 06:37:19,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 06:37:19,921 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-10-20 06:37:19,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:37:19,932 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2020-10-20 06:37:19,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 06:37:19,934 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 5 transitions. [2020-10-20 06:37:19,935 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:37:19,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2020-10-20 06:37:19,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 06:37:19,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 06:37:19,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 06:37:19,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 06:37:19,950 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:37:19,950 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:37:19,950 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:37:19,951 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 06:37:19,951 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:37:19,951 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 06:37:19,951 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 06:37:19,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 06:37:19 BoogieIcfgContainer [2020-10-20 06:37:19,962 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 06:37:19,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:37:19,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:37:19,964 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:37:19,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:37:19" (3/4) ... [2020-10-20 06:37:19,970 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 06:37:19,970 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:37:19,974 INFO L168 Benchmark]: Toolchain (without parser) took 1501.53 ms. Allocated memory was 36.2 MB in the beginning and 47.2 MB in the end (delta: 11.0 MB). Free memory was 12.3 MB in the beginning and 25.6 MB in the end (delta: -13.3 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:37:19,976 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 34.1 MB. Free memory was 19.2 MB in the beginning and 19.2 MB in the end (delta: 29.1 kB). Peak memory consumption was 29.1 kB. Max. memory is 14.3 GB. [2020-10-20 06:37:19,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 570.62 ms. Allocated memory was 36.2 MB in the beginning and 44.0 MB in the end (delta: 7.9 MB). Free memory was 11.5 MB in the beginning and 16.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:37:19,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.95 ms. Allocated memory is still 44.0 MB. Free memory was 16.6 MB in the beginning and 14.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:37:19,981 INFO L168 Benchmark]: Boogie Preprocessor took 43.62 ms. Allocated memory was 44.0 MB in the beginning and 43.5 MB in the end (delta: -524.3 kB). Free memory was 14.5 MB in the beginning and 26.2 MB in the end (delta: -11.7 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. [2020-10-20 06:37:19,982 INFO L168 Benchmark]: RCFGBuilder took 430.27 ms. Allocated memory was 43.5 MB in the beginning and 47.2 MB in the end (delta: 3.7 MB). Free memory was 26.0 MB in the beginning and 27.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 16.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:37:19,984 INFO L168 Benchmark]: BuchiAutomizer took 389.81 ms. Allocated memory is still 47.2 MB. Free memory was 27.0 MB in the beginning and 25.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:37:19,991 INFO L168 Benchmark]: Witness Printer took 6.68 ms. Allocated memory is still 47.2 MB. Free memory was 25.9 MB in the beginning and 25.6 MB in the end (delta: 356.0 kB). Peak memory consumption was 356.0 kB. Max. memory is 14.3 GB. [2020-10-20 06:37:20,003 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 34.1 MB. Free memory was 19.2 MB in the beginning and 19.2 MB in the end (delta: 29.1 kB). Peak memory consumption was 29.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 570.62 ms. Allocated memory was 36.2 MB in the beginning and 44.0 MB in the end (delta: 7.9 MB). Free memory was 11.5 MB in the beginning and 16.6 MB in the end (delta: -5.1 MB). Peak memory consumption was 9.0 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 48.95 ms. Allocated memory is still 44.0 MB. Free memory was 16.6 MB in the beginning and 14.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 43.62 ms. Allocated memory was 44.0 MB in the beginning and 43.5 MB in the end (delta: -524.3 kB). Free memory was 14.5 MB in the beginning and 26.2 MB in the end (delta: -11.7 MB). Peak memory consumption was 3.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 430.27 ms. Allocated memory was 43.5 MB in the beginning and 47.2 MB in the end (delta: 3.7 MB). Free memory was 26.0 MB in the beginning and 27.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 16.7 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 389.81 ms. Allocated memory is still 47.2 MB. Free memory was 27.0 MB in the beginning and 25.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 20.5 MB. Max. memory is 14.3 GB. * Witness Printer took 6.68 ms. Allocated memory is still 47.2 MB. Free memory was 25.9 MB in the beginning and 25.6 MB in the end (delta: 356.0 kB). Peak memory consumption was 356.0 kB. Max. memory is 14.3 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 0.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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...