./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcat-alloca-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 54858612 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-memory-alloca/openbsd_cstrcat-alloca-1.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 76da3a81dee1d435f94d1997f88b6b1f891a43a1 ........................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 04:22:17,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 04:22:17,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 04:22:17,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 04:22:17,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 04:22:17,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 04:22:17,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 04:22:17,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 04:22:17,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 04:22:17,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 04:22:17,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 04:22:17,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 04:22:17,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 04:22:17,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 04:22:17,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 04:22:17,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 04:22:17,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 04:22:17,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 04:22:17,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 04:22:17,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 04:22:17,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 04:22:17,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 04:22:17,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 04:22:17,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 04:22:17,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 04:22:17,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 04:22:17,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 04:22:17,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 04:22:17,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 04:22:17,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 04:22:17,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 04:22:17,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 04:22:17,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 04:22:17,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 04:22:17,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 04:22:17,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 04:22:17,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 04:22:17,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 04:22:17,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 04:22:17,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 04:22:17,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 04:22:17,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-10-26 04:22:17,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 04:22:17,513 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 04:22:17,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 04:22:17,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 04:22:17,518 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 04:22:17,518 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-26 04:22:17,518 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-26 04:22:17,519 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-26 04:22:17,519 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-26 04:22:17,519 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-26 04:22:17,520 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-26 04:22:17,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 04:22:17,521 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 04:22:17,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 04:22:17,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 04:22:17,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-26 04:22:17,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-26 04:22:17,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-26 04:22:17,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 04:22:17,523 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-26 04:22:17,524 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 04:22:17,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-26 04:22:17,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 04:22:17,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 04:22:17,525 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-26 04:22:17,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 04:22:17,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 04:22:17,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 04:22:17,526 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-26 04:22:17,528 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-26 04:22:17,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76da3a81dee1d435f94d1997f88b6b1f891a43a1 [2020-10-26 04:22:17,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 04:22:17,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 04:22:18,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 04:22:18,003 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 04:22:18,004 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 04:22:18,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcat-alloca-1.i [2020-10-26 04:22:18,087 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b69e64568/c7a99b944125481784b1109e73a38ef9/FLAGfb7622dc6 [2020-10-26 04:22:18,875 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 04:22:18,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/openbsd_cstrcat-alloca-1.i [2020-10-26 04:22:18,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b69e64568/c7a99b944125481784b1109e73a38ef9/FLAGfb7622dc6 [2020-10-26 04:22:18,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b69e64568/c7a99b944125481784b1109e73a38ef9 [2020-10-26 04:22:18,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 04:22:18,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 04:22:18,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 04:22:18,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 04:22:18,933 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 04:22:18,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:22:18" (1/1) ... [2020-10-26 04:22:18,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1777dbc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:18, skipping insertion in model container [2020-10-26 04:22:18,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 04:22:18" (1/1) ... [2020-10-26 04:22:18,947 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 04:22:19,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 04:22:19,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:22:19,386 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 04:22:19,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 04:22:19,497 INFO L208 MainTranslator]: Completed translation [2020-10-26 04:22:19,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:19 WrapperNode [2020-10-26 04:22:19,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 04:22:19,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 04:22:19,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 04:22:19,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 04:22:19,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:19" (1/1) ... [2020-10-26 04:22:19,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:19" (1/1) ... [2020-10-26 04:22:19,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 04:22:19,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 04:22:19,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 04:22:19,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 04:22:19,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:19" (1/1) ... [2020-10-26 04:22:19,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:19" (1/1) ... [2020-10-26 04:22:19,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:19" (1/1) ... [2020-10-26 04:22:19,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:19" (1/1) ... [2020-10-26 04:22:19,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:19" (1/1) ... [2020-10-26 04:22:19,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:19" (1/1) ... [2020-10-26 04:22:19,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:19" (1/1) ... [2020-10-26 04:22:19,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 04:22:19,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 04:22:19,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 04:22:19,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 04:22:19,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:19" (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 [2020-10-26 04:22:19,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 04:22:19,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 04:22:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 04:22:19,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 04:22:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 04:22:19,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 04:22:20,134 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 04:22:20,134 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-26 04:22:20,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:22:20 BoogieIcfgContainer [2020-10-26 04:22:20,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 04:22:20,138 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-26 04:22:20,138 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-26 04:22:20,152 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-26 04:22:20,153 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:22:20,153 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.10 04:22:18" (1/3) ... [2020-10-26 04:22:20,154 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@437adf78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:22:20, skipping insertion in model container [2020-10-26 04:22:20,155 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:22:20,155 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 04:22:19" (2/3) ... [2020-10-26 04:22:20,158 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@437adf78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.10 04:22:20, skipping insertion in model container [2020-10-26 04:22:20,159 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-26 04:22:20,159 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:22:20" (3/3) ... [2020-10-26 04:22:20,164 INFO L373 chiAutomizerObserver]: Analyzing ICFG openbsd_cstrcat-alloca-1.i [2020-10-26 04:22:20,283 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-26 04:22:20,286 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-26 04:22:20,286 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-26 04:22:20,289 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 04:22:20,289 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 04:22:20,290 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-26 04:22:20,290 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 04:22:20,290 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-26 04:22:20,316 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-26 04:22:20,344 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-10-26 04:22:20,344 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:22:20,344 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:22:20,354 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:22:20,354 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:22:20,354 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-26 04:22:20,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2020-10-26 04:22:20,358 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2020-10-26 04:22:20,359 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-26 04:22:20,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-26 04:22:20,359 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2020-10-26 04:22:20,360 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-10-26 04:22:20,371 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 6#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~nondet8, main_#t~nondet9, main_#t~malloc10.base, main_#t~malloc10.offset, main_#t~malloc11.base, main_#t~malloc11.offset, main_#t~ret12.base, main_#t~ret12.offset, main_~length1~0, main_~length2~0, main_~length3~0, main_~nondetString1~0.base, main_~nondetString1~0.offset, main_~nondetString2~0.base, main_~nondetString2~0.offset;main_~length1~0 := main_#t~nondet7;havoc main_#t~nondet7;main_~length2~0 := main_#t~nondet8;havoc main_#t~nondet8;main_~length3~0 := main_#t~nondet9;havoc main_#t~nondet9; 18#L559true assume !(main_~length1~0 < 1); 5#L559-2true assume !(main_~length2~0 < 2); 13#L562-1true assume !(main_~length3~0 < 1); 7#L565-1true assume !(main_~length2~0 - main_~length3~0 < main_~length1~0 || main_~length3~0 > main_~length2~0);call main_#t~malloc10.base, main_#t~malloc10.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc10.base, main_#t~malloc10.offset;call main_#t~malloc11.base, main_#t~malloc11.offset := #Ultimate.allocOnStack(main_~length2~0);main_~nondetString2~0.base, main_~nondetString2~0.offset := main_#t~malloc11.base, main_#t~malloc11.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1), 1);call write~int(0, main_~nondetString2~0.base, main_~nondetString2~0.offset + (main_~length3~0 - 1), 1);cstrcat_#in~s.base, cstrcat_#in~s.offset, cstrcat_#in~append.base, cstrcat_#in~append.offset := main_~nondetString2~0.base, main_~nondetString2~0.offset, main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrcat_#res.base, cstrcat_#res.offset;havoc cstrcat_#t~pre2.base, cstrcat_#t~pre2.offset, cstrcat_#t~mem3, cstrcat_#t~post4.base, cstrcat_#t~post4.offset, cstrcat_#t~post5.base, cstrcat_#t~post5.offset, cstrcat_#t~mem6, cstrcat_~s.base, cstrcat_~s.offset, cstrcat_~append.base, cstrcat_~append.offset, cstrcat_~save~0.base, cstrcat_~save~0.offset;cstrcat_~s.base, cstrcat_~s.offset := cstrcat_#in~s.base, cstrcat_#in~s.offset;cstrcat_~append.base, cstrcat_~append.offset := cstrcat_#in~append.base, cstrcat_#in~append.offset;cstrcat_~save~0.base, cstrcat_~save~0.offset := cstrcat_~s.base, cstrcat_~s.offset; 4#L551-4true [2020-10-26 04:22:20,372 INFO L796 eck$LassoCheckResult]: Loop: 4#L551-4true call cstrcat_#t~mem3 := read~int(cstrcat_~s.base, cstrcat_~s.offset, 1); 14#L551-1true assume !!(0 != cstrcat_#t~mem3);havoc cstrcat_#t~mem3; 3#L551-3true cstrcat_#t~pre2.base, cstrcat_#t~pre2.offset := cstrcat_~s.base, 1 + cstrcat_~s.offset;cstrcat_~s.base, cstrcat_~s.offset := cstrcat_~s.base, 1 + cstrcat_~s.offset;havoc cstrcat_#t~pre2.base, cstrcat_#t~pre2.offset; 4#L551-4true [2020-10-26 04:22:20,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:22:20,385 INFO L82 PathProgramCache]: Analyzing trace with hash 889572367, now seen corresponding path program 1 times [2020-10-26 04:22:20,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:22:20,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698022438] [2020-10-26 04:22:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:22:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:22:20,617 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:22:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:22:20,688 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:22:20,725 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:22:20,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:22:20,729 INFO L82 PathProgramCache]: Analyzing trace with hash 58750, now seen corresponding path program 1 times [2020-10-26 04:22:20,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:22:20,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567168971] [2020-10-26 04:22:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:22:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:22:20,756 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:22:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:22:20,769 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:22:20,774 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:22:20,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:22:20,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1302197936, now seen corresponding path program 1 times [2020-10-26 04:22:20,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 04:22:20,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423234433] [2020-10-26 04:22:20,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 04:22:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:22:20,837 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:22:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 04:22:20,890 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 04:22:20,911 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 04:22:21,439 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 90 [2020-10-26 04:22:21,597 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-26 04:22:21,611 INFO L210 LassoAnalysis]: Preferences: [2020-10-26 04:22:21,612 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-26 04:22:21,612 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-26 04:22:21,613 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-26 04:22:21,613 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-26 04:22:21,613 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:22:21,613 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-26 04:22:21,614 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-26 04:22:21,614 INFO L133 ssoRankerPreferences]: Filename of dumped script: openbsd_cstrcat-alloca-1.i_Iteration1_Lasso [2020-10-26 04:22:21,614 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-26 04:22:21,615 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-26 04:22:21,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,026 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-26 04:22:22,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,130 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,137 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,140 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-26 04:22:22,317 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-26 04:22:22,657 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-26 04:22:22,885 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-26 04:22:22,889 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:22:22,899 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:22:22,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:22:22,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:22:22,903 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:22:22,903 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:22:22,909 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:22:22,909 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:22:22,914 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:22:22,955 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-10-26 04:22:22,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-26 04:22:22,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-26 04:22:22,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-26 04:22:22,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-26 04:22:22,985 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-10-26 04:22:22,986 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-10-26 04:22:23,007 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-26 04:22:23,046 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2020-10-26 04:22:23,046 INFO L444 ModelExtractionUtils]: 41 out of 49 variables were initially zero. Simplification set additionally 5 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-26 04:22:23,052 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-26 04:22:23,056 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-10-26 04:22:23,056 INFO L510 LassoAnalysis]: Proved termination. [2020-10-26 04:22:23,057 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_main_#t~malloc11.base)_1, ULTIMATE.start_cstrcat_~s.offset) = 1*v_rep(select #length ULTIMATE.start_main_#t~malloc11.base)_1 - 1*ULTIMATE.start_cstrcat_~s.offset Supporting invariants [] [2020-10-26 04:22:23,234 INFO L297 tatePredicateManager]: 8 out of 9 supporting invariants were superfluous and have been removed [2020-10-26 04:22:23,302 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-10-26 04:22:23,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 04:22:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:22:23,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 04:22:23,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:22:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 04:22:23,425 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 04:22:23,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 04:22:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 04:22:23,470 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 [2020-10-26 04:22:23,471 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 3 states. [2020-10-26 04:22:23,563 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 3 states. Result 34 states and 44 transitions. Complement of second has 8 states. [2020-10-26 04:22:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-26 04:22:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-26 04:22:23,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2020-10-26 04:22:23,568 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 6 letters. Loop has 3 letters. [2020-10-26 04:22:23,569 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:22:23,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 9 letters. Loop has 3 letters. [2020-10-26 04:22:23,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:22:23,570 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 6 letters. Loop has 6 letters. [2020-10-26 04:22:23,570 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-26 04:22:23,572 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 44 transitions. [2020-10-26 04:22:23,575 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:22:23,579 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 0 states and 0 transitions. [2020-10-26 04:22:23,580 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-26 04:22:23,580 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-26 04:22:23,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-26 04:22:23,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-26 04:22:23,581 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:22:23,582 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:22:23,582 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 04:22:23,582 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-26 04:22:23,582 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-26 04:22:23,582 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-26 04:22:23,582 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-26 04:22:23,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.10 04:22:23 BoogieIcfgContainer [2020-10-26 04:22:23,589 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-26 04:22:23,590 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 04:22:23,590 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 04:22:23,590 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 04:22:23,591 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 04:22:20" (3/4) ... [2020-10-26 04:22:23,594 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-26 04:22:23,595 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 04:22:23,597 INFO L168 Benchmark]: Toolchain (without parser) took 4674.15 ms. Allocated memory was 50.3 MB in the beginning and 88.1 MB in the end (delta: 37.7 MB). Free memory was 25.9 MB in the beginning and 46.8 MB in the end (delta: -20.9 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2020-10-26 04:22:23,598 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 41.9 MB. Free memory was 19.9 MB in the beginning and 19.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:22:23,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 569.52 ms. Allocated memory is still 50.3 MB. Free memory was 25.2 MB in the beginning and 27.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-10-26 04:22:23,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.27 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 25.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:22:23,600 INFO L168 Benchmark]: Boogie Preprocessor took 34.60 ms. Allocated memory is still 50.3 MB. Free memory was 25.4 MB in the beginning and 24.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 04:22:23,601 INFO L168 Benchmark]: RCFGBuilder took 550.83 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 21.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 04:22:23,602 INFO L168 Benchmark]: BuchiAutomizer took 3451.35 ms. Allocated memory was 50.3 MB in the beginning and 88.1 MB in the end (delta: 37.7 MB). Free memory was 21.2 MB in the beginning and 47.4 MB in the end (delta: -26.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2020-10-26 04:22:23,603 INFO L168 Benchmark]: Witness Printer took 5.25 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 46.8 MB in the end (delta: 679.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 04:22:23,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 41.9 MB. Free memory was 19.9 MB in the beginning and 19.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 569.52 ms. Allocated memory is still 50.3 MB. Free memory was 25.2 MB in the beginning and 27.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.27 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 25.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.60 ms. Allocated memory is still 50.3 MB. Free memory was 25.4 MB in the beginning and 24.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 550.83 ms. Allocated memory is still 50.3 MB. Free memory was 24.1 MB in the beginning and 21.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3451.35 ms. Allocated memory was 50.3 MB in the beginning and 88.1 MB in the end (delta: 37.7 MB). Free memory was 21.2 MB in the beginning and 47.4 MB in the end (delta: -26.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.25 ms. Allocated memory is still 88.1 MB. Free memory was 47.4 MB in the beginning and 46.8 MB in the end (delta: 679.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #length * 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 (length2 * sizeof(char))] + -1 * s and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 2.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 17 SDtfs, 19 SDslu, 8 SDs, 0 SdLazy, 7 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital188 mio100 ax109 hnf99 lsp88 ukn78 mio100 lsp50 div100 bol100 ite100 ukn100 eq186 hnf88 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms 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! Received shutdown request...