./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-libowfat/strcasecmp.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-libowfat/strcasecmp.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/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 1c2f9d054b4fbf31aaebd626db3028f09e8a957b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:01:11,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:01:11,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:01:11,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:01:11,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:01:11,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:01:11,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:01:11,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:01:11,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:01:11,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:01:11,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:01:11,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:01:11,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:01:11,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:01:11,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:01:11,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:01:11,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:01:11,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:01:11,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:01:11,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:01:11,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:01:11,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:01:11,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:01:11,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:01:11,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:01:11,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:01:11,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:01:11,383 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:01:11,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:01:11,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:01:11,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:01:11,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:01:11,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:01:11,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:01:11,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:01:11,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:01:11,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:01:11,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:01:11,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:01:11,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:01:11,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:01:11,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-15 23:01:11,422 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:01:11,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:01:11,425 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:01:11,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:01:11,426 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:01:11,426 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 23:01:11,427 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 23:01:11,427 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 23:01:11,427 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 23:01:11,427 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 23:01:11,429 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 23:01:11,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:01:11,429 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 23:01:11,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:01:11,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:01:11,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 23:01:11,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 23:01:11,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 23:01:11,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:01:11,431 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 23:01:11,432 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:01:11,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 23:01:11,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:01:11,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:01:11,433 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 23:01:11,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:01:11,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:01:11,434 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 23:01:11,437 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 23:01:11,438 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/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 -> 1c2f9d054b4fbf31aaebd626db3028f09e8a957b [2019-11-15 23:01:11,480 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:01:11,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:01:11,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:01:11,506 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:01:11,506 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:01:11,507 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/bin/uautomizer/../../sv-benchmarks/c/termination-libowfat/strcasecmp.i [2019-11-15 23:01:11,578 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/bin/uautomizer/data/18d7ceb3f/6f949eff6c2b49479e7e7da0e29368e6/FLAG860c50e8a [2019-11-15 23:01:12,044 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:01:12,050 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/sv-benchmarks/c/termination-libowfat/strcasecmp.i [2019-11-15 23:01:12,064 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/bin/uautomizer/data/18d7ceb3f/6f949eff6c2b49479e7e7da0e29368e6/FLAG860c50e8a [2019-11-15 23:01:12,351 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/bin/uautomizer/data/18d7ceb3f/6f949eff6c2b49479e7e7da0e29368e6 [2019-11-15 23:01:12,354 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:01:12,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:01:12,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:01:12,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:01:12,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:01:12,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:01:12" (1/1) ... [2019-11-15 23:01:12,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69838d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:12, skipping insertion in model container [2019-11-15 23:01:12,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:01:12" (1/1) ... [2019-11-15 23:01:12,372 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:01:12,429 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:01:12,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:01:12,982 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:01:13,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:01:13,092 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:01:13,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:13 WrapperNode [2019-11-15 23:01:13,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:01:13,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:01:13,094 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:01:13,094 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:01:13,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:13" (1/1) ... [2019-11-15 23:01:13,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:13" (1/1) ... [2019-11-15 23:01:13,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:01:13,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:01:13,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:01:13,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:01:13,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:13" (1/1) ... [2019-11-15 23:01:13,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:13" (1/1) ... [2019-11-15 23:01:13,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:13" (1/1) ... [2019-11-15 23:01:13,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:13" (1/1) ... [2019-11-15 23:01:13,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:13" (1/1) ... [2019-11-15 23:01:13,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:13" (1/1) ... [2019-11-15 23:01:13,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:13" (1/1) ... [2019-11-15 23:01:13,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:01:13,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:01:13,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:01:13,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:01:13,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e611ccb2-94dc-4992-be6a-4d988bd7adbb/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 [2019-11-15 23:01:13,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:01:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:01:13,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:01:13,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:01:13,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:01:13,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:01:13,628 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:01:13,628 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-15 23:01:13,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:01:13 BoogieIcfgContainer [2019-11-15 23:01:13,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:01:13,630 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 23:01:13,630 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 23:01:13,633 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 23:01:13,633 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:01:13,633 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 11:01:12" (1/3) ... [2019-11-15 23:01:13,634 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4875b2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:01:13, skipping insertion in model container [2019-11-15 23:01:13,635 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:01:13,635 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:01:13" (2/3) ... [2019-11-15 23:01:13,635 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4875b2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 11:01:13, skipping insertion in model container [2019-11-15 23:01:13,636 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 23:01:13,636 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:01:13" (3/3) ... [2019-11-15 23:01:13,637 INFO L371 chiAutomizerObserver]: Analyzing ICFG strcasecmp.i [2019-11-15 23:01:13,688 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 23:01:13,689 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 23:01:13,689 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 23:01:13,689 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:01:13,689 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:01:13,690 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 23:01:13,690 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:01:13,690 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 23:01:13,706 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2019-11-15 23:01:13,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-15 23:01:13,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:01:13,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:01:13,738 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 23:01:13,738 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:01:13,738 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 23:01:13,739 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states. [2019-11-15 23:01:13,740 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-15 23:01:13,740 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 23:01:13,740 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 23:01:13,741 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-15 23:01:13,741 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:01:13,747 INFO L791 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 8#L-1true havoc main_#res;havoc main_#t~nondet6, main_#t~malloc7.base, main_#t~malloc7.offset, main_#t~nondet8, main_#t~malloc9.base, main_#t~malloc9.offset, main_#t~ret10, main_~in_len~0, main_~in~0.base, main_~in~0.offset, main_~out_len~0, main_~out~0.base, main_~out~0.offset;main_~in_len~0 := main_#t~nondet6;havoc main_#t~nondet6; 5#L523true assume !(main_~in_len~0 < 1);call main_#t~malloc7.base, main_#t~malloc7.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~in~0.base, main_~in~0.offset := main_#t~malloc7.base, main_#t~malloc7.offset;call write~int(0, main_~in~0.base, main_~in~0.offset + (main_~in_len~0 - 1), 1);main_~out_len~0 := main_#t~nondet8;havoc main_#t~nondet8; 18#L527true assume !(main_~out_len~0 < 1);call main_#t~malloc9.base, main_#t~malloc9.offset := #Ultimate.allocOnStack(main_~in_len~0);main_~out~0.base, main_~out~0.offset := main_#t~malloc9.base, main_#t~malloc9.offset;call write~int(0, main_~out~0.base, main_~out~0.offset + (main_~out_len~0 - 1), 1);strcasecmp_#in~s1.base, strcasecmp_#in~s1.offset, strcasecmp_#in~s2.base, strcasecmp_#in~s2.offset := main_~in~0.base, main_~in~0.offset, main_~out~0.base, main_~out~0.offset;havoc strcasecmp_#res;havoc strcasecmp_#t~mem2, strcasecmp_#t~mem3, strcasecmp_#t~post4.base, strcasecmp_#t~post4.offset, strcasecmp_#t~post5.base, strcasecmp_#t~post5.offset, strcasecmp_~s1.base, strcasecmp_~s1.offset, strcasecmp_~s2.base, strcasecmp_~s2.offset, strcasecmp_~x2~0, strcasecmp_~x1~0;strcasecmp_~s1.base, strcasecmp_~s1.offset := strcasecmp_#in~s1.base, strcasecmp_#in~s1.offset;strcasecmp_~s2.base, strcasecmp_~s2.offset := strcasecmp_#in~s2.base, strcasecmp_#in~s2.offset;havoc strcasecmp_~x2~0;havoc strcasecmp_~x1~0; 14#L510-2true [2019-11-15 23:01:13,747 INFO L793 eck$LassoCheckResult]: Loop: 14#L510-2true assume !false;call strcasecmp_#t~mem2 := read~int(strcasecmp_~s2.base, strcasecmp_~s2.offset, 1);strcasecmp_~x2~0 := strcasecmp_#t~mem2 - 65;havoc strcasecmp_#t~mem2; 7#L511true assume strcasecmp_~x2~0 % 4294967296 < 26;strcasecmp_~x2~0 := 32 + strcasecmp_~x2~0; 11#L511-2true call strcasecmp_#t~mem3 := read~int(strcasecmp_~s1.base, strcasecmp_~s1.offset, 1);strcasecmp_~x1~0 := strcasecmp_#t~mem3 - 65;havoc strcasecmp_#t~mem3; 6#L512true assume !(strcasecmp_~x1~0 % 4294967296 < 26); 9#L512-2true strcasecmp_#t~post4.base, strcasecmp_#t~post4.offset := strcasecmp_~s1.base, strcasecmp_~s1.offset;strcasecmp_~s1.base, strcasecmp_~s1.offset := strcasecmp_#t~post4.base, 1 + strcasecmp_#t~post4.offset;havoc strcasecmp_#t~post4.base, strcasecmp_#t~post4.offset;strcasecmp_#t~post5.base, strcasecmp_#t~post5.offset := strcasecmp_~s2.base, strcasecmp_~s2.offset;strcasecmp_~s2.base, strcasecmp_~s2.offset := strcasecmp_#t~post5.base, 1 + strcasecmp_#t~post5.offset;havoc strcasecmp_#t~post5.base, strcasecmp_#t~post5.offset; 4#L514true assume !(strcasecmp_~x2~0 % 4294967296 != strcasecmp_~x1~0 % 4294967296); 3#L516true assume !(4294967231 == strcasecmp_~x1~0 % 4294967296); 14#L510-2true [2019-11-15 23:01:13,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:01:13,753 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2019-11-15 23:01:13,763 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:01:13,763 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049099078] [2019-11-15 23:01:13,764 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:01:13,764 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:01:13,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:01:13,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:01:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:01:13,941 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:01:13,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:01:13,942 INFO L82 PathProgramCache]: Analyzing trace with hash -380472609, now seen corresponding path program 1 times [2019-11-15 23:01:13,942 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:01:13,943 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389707235] [2019-11-15 23:01:13,943 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:01:13,943 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:01:13,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:01:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:01:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:01:13,995 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:01:13,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:01:13,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1579348248, now seen corresponding path program 1 times [2019-11-15 23:01:13,997 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:01:13,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569242103] [2019-11-15 23:01:13,998 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:01:13,998 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:01:13,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:01:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:01:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:01:14,146 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:01:14,378 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-11-15 23:01:14,495 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-15 23:01:14,995 WARN L191 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2019-11-15 23:01:15,171 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2019-11-15 23:01:15,184 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 23:01:15,185 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 23:01:15,185 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 23:01:15,186 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 23:01:15,186 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 23:01:15,186 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 23:01:15,186 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 23:01:15,187 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 23:01:15,187 INFO L131 ssoRankerPreferences]: Filename of dumped script: strcasecmp.i_Iteration1_Lasso [2019-11-15 23:01:15,187 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 23:01:15,187 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 23:01:15,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:15,749 WARN L191 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-11-15 23:01:16,174 WARN L191 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-11-15 23:01:16,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,221 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 23:01:16,542 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-11-15 23:01:16,729 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-11-15 23:01:17,193 WARN L191 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2019-11-15 23:01:17,468 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 23:01:17,473 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 23:01:17,475 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 [2019-11-15 23:01:17,477 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:01:17,478 INFO L202 nArgumentSynthesizer]: 4 stem disjuncts [2019-11-15 23:01:17,478 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:01:17,479 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:01:17,499 INFO L400 nArgumentSynthesizer]: We have 12 Motzkin's Theorem applications. [2019-11-15 23:01:17,499 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:01:17,573 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:01:17,574 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 [2019-11-15 23:01:17,575 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:01:17,575 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 23:01:17,576 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:01:17,576 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:01:17,576 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:01:17,579 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 23:01:17,579 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 23:01:17,600 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:01:17,601 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 [2019-11-15 23:01:17,602 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:01:17,602 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:01:17,603 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:01:17,603 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:01:17,605 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:01:17,605 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:01:17,608 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:01:17,609 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 [2019-11-15 23:01:17,610 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:01:17,610 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:01:17,611 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:01:17,611 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:01:17,614 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:01:17,614 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:01:17,630 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:01:17,631 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 [2019-11-15 23:01:17,642 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:01:17,643 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:01:17,643 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:01:17,643 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:01:17,646 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:01:17,646 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:01:17,657 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:01:17,658 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 [2019-11-15 23:01:17,658 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:01:17,659 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:01:17,659 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:01:17,659 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:01:17,661 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:01:17,661 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:01:17,664 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:01:17,664 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 [2019-11-15 23:01:17,665 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:01:17,665 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:01:17,665 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:01:17,666 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:01:17,667 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:01:17,668 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:01:17,670 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 23:01:17,671 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 [2019-11-15 23:01:17,672 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 23:01:17,672 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 23:01:17,672 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 23:01:17,672 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 23:01:17,681 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-15 23:01:17,682 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-15 23:01:17,806 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 23:01:17,948 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-11-15 23:01:17,948 INFO L444 ModelExtractionUtils]: 43 out of 49 variables were initially zero. Simplification set additionally 3 variables to zero. [2019-11-15 23:01:17,951 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 23:01:17,953 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-11-15 23:01:17,954 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 23:01:17,955 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select #length ULTIMATE.start_strcasecmp_~s1.base)_1, ULTIMATE.start_strcasecmp_~s1.offset) = 1*v_rep(select #length ULTIMATE.start_strcasecmp_~s1.base)_1 - 1*ULTIMATE.start_strcasecmp_~s1.offset Supporting invariants [] [2019-11-15 23:01:18,046 INFO L297 tatePredicateManager]: 18 out of 18 supporting invariants were superfluous and have been removed [2019-11-15 23:01:18,055 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2019-11-15 23:01:18,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:01:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:01:18,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 23:01:18,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:01:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:01:18,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-15 23:01:18,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:01:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:01:18,239 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-15 23:01:18,240 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states. Second operand 5 states. [2019-11-15 23:01:18,315 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states.. Second operand 5 states. Result 38 states and 50 transitions. Complement of second has 7 states. [2019-11-15 23:01:18,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-15 23:01:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-15 23:01:18,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2019-11-15 23:01:18,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 4 letters. Loop has 7 letters. [2019-11-15 23:01:18,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:01:18,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 11 letters. Loop has 7 letters. [2019-11-15 23:01:18,322 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:01:18,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 32 transitions. Stem has 4 letters. Loop has 14 letters. [2019-11-15 23:01:18,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 23:01:18,325 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 50 transitions. [2019-11-15 23:01:18,329 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:01:18,332 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 0 states and 0 transitions. [2019-11-15 23:01:18,334 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 23:01:18,334 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 23:01:18,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 23:01:18,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 23:01:18,335 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:01:18,335 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:01:18,336 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 23:01:18,336 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 23:01:18,336 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 23:01:18,336 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 23:01:18,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 23:01:18,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 11:01:18 BoogieIcfgContainer [2019-11-15 23:01:18,343 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 23:01:18,344 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:01:18,344 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:01:18,344 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:01:18,345 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:01:13" (3/4) ... [2019-11-15 23:01:18,348 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:01:18,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:01:18,351 INFO L168 Benchmark]: Toolchain (without parser) took 5995.43 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 75.0 MB). Free memory was 946.0 MB in the beginning and 844.7 MB in the end (delta: 101.3 MB). Peak memory consumption was 176.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:01:18,351 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:01:18,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 737.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 75.0 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -114.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:01:18,353 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:01:18,354 INFO L168 Benchmark]: Boogie Preprocessor took 35.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:01:18,355 INFO L168 Benchmark]: RCFGBuilder took 446.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:01:18,356 INFO L168 Benchmark]: BuchiAutomizer took 4713.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 844.7 MB in the end (delta: 189.0 MB). Peak memory consumption was 189.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:01:18,356 INFO L168 Benchmark]: Witness Printer took 5.10 ms. Allocated memory is still 1.1 GB. Free memory is still 844.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:01:18,360 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 737.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 75.0 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -114.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.63 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 446.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4713.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 844.7 MB in the end (delta: 189.0 MB). Peak memory consumption was 189.0 MB. Max. memory is 11.5 GB. * Witness Printer took 5.10 ms. Allocated memory is still 1.1 GB. Free memory is still 844.7 MB. There was no memory consumed. Max. memory is 11.5 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[s1] + -1 * s1 and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 4.3s. 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: 20 SDtfs, 23 SDslu, 22 SDs, 0 SdLazy, 6 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital234 mio100 ax100 hnf100 lsp97 ukn89 mio100 lsp44 div154 bol100 ite100 ukn100 eq148 hnf74 smp100 dnf156 smp97 tf100 neg96 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 98ms VariablesStem: 9 VariablesLoop: 8 DisjunctsStem: 4 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 12 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...