./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/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 c00c2eb0cef5f2e9aa4da3a7cbfbf681617d72f6 ........................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:18:04,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:18:04,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:18:04,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:18:04,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:18:04,863 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:18:04,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:18:04,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:18:04,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:18:04,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:18:04,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:18:04,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:18:04,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:18:04,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:18:04,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:18:04,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:18:04,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:18:04,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:18:04,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:18:04,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:18:04,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:18:04,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:18:04,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:18:04,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:18:04,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:18:04,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:18:04,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:18:04,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:18:04,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:18:04,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:18:04,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:18:04,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:18:04,927 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:18:04,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:18:04,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:18:04,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:18:04,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:18:04,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:18:04,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:18:04,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:18:04,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:18:04,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:18:04,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:18:04,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:18:04,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:18:04,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:18:04,982 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:18:04,982 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:18:04,982 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:18:04,982 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:18:04,983 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:18:04,983 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:18:04,984 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:18:04,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:18:04,984 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:18:04,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:18:04,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:18:04,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:18:04,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:18:04,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:18:04,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:18:04,986 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:18:04,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:18:04,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:18:04,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:18:04,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:18:04,987 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:18:04,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:18:04,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:18:04,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:18:04,988 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:18:04,990 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:18:04,990 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c00c2eb0cef5f2e9aa4da3a7cbfbf681617d72f6 [2020-11-28 03:18:05,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:18:05,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:18:05,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:18:05,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:18:05,314 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:18:05,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/../../sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2020-11-28 03:18:05,398 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/data/291a8d2f7/cf7292c0e6374a4fa750b609d94c6ea6/FLAGde112b90f [2020-11-28 03:18:05,977 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:18:05,977 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/sv-benchmarks/c/termination-15/cstrlen_reverse_alloca.i [2020-11-28 03:18:05,987 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/data/291a8d2f7/cf7292c0e6374a4fa750b609d94c6ea6/FLAGde112b90f [2020-11-28 03:18:06,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/data/291a8d2f7/cf7292c0e6374a4fa750b609d94c6ea6 [2020-11-28 03:18:06,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:18:06,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:18:06,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:06,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:18:06,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:18:06,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:06" (1/1) ... [2020-11-28 03:18:06,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26633fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06, skipping insertion in model container [2020-11-28 03:18:06,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:06" (1/1) ... [2020-11-28 03:18:06,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:18:06,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:18:06,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:06,701 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:18:06,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:06,845 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:18:06,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06 WrapperNode [2020-11-28 03:18:06,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:06,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:06,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:18:06,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:18:06,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06" (1/1) ... [2020-11-28 03:18:06,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06" (1/1) ... [2020-11-28 03:18:06,915 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:06,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:18:06,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:18:06,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:18:06,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06" (1/1) ... [2020-11-28 03:18:06,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06" (1/1) ... [2020-11-28 03:18:06,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06" (1/1) ... [2020-11-28 03:18:06,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06" (1/1) ... [2020-11-28 03:18:06,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06" (1/1) ... [2020-11-28 03:18:06,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06" (1/1) ... [2020-11-28 03:18:06,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06" (1/1) ... [2020-11-28 03:18:06,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:18:06,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:18:06,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:18:06,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:18:06,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:07,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:18:07,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:18:07,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:18:07,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:18:07,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:18:07,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:18:07,307 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:18:07,307 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-11-28 03:18:07,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:07 BoogieIcfgContainer [2020-11-28 03:18:07,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:18:07,310 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:18:07,310 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:18:07,317 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:18:07,317 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:18:07,318 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:18:06" (1/3) ... [2020-11-28 03:18:07,319 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a9154e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:18:07, skipping insertion in model container [2020-11-28 03:18:07,319 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:18:07,319 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:06" (2/3) ... [2020-11-28 03:18:07,320 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a9154e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:18:07, skipping insertion in model container [2020-11-28 03:18:07,320 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:18:07,320 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:07" (3/3) ... [2020-11-28 03:18:07,321 INFO L373 chiAutomizerObserver]: Analyzing ICFG cstrlen_reverse_alloca.i [2020-11-28 03:18:07,365 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:18:07,365 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:18:07,365 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:18:07,365 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:18:07,365 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:18:07,365 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:18:07,366 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:18:07,366 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:18:07,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-11-28 03:18:07,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:18:07,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:18:07,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:18:07,402 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:18:07,403 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:18:07,403 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:18:07,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states. [2020-11-28 03:18:07,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:18:07,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:18:07,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:18:07,405 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:18:07,405 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:18:07,412 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 3#L-1true havoc main_#res;havoc main_#t~nondet207, main_#t~malloc208.base, main_#t~malloc208.offset, main_#t~ret209, main_~length1~0, main_~nondetString1~0.base, main_~nondetString1~0.offset;main_~length1~0 := main_#t~nondet207;havoc main_#t~nondet207; 13#L373true assume !(main_~length1~0 < 1); 6#L373-2true call main_#t~malloc208.base, main_#t~malloc208.offset := #Ultimate.allocOnStack(main_~length1~0);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_#t~malloc208.base, main_#t~malloc208.offset;call write~int(0, main_~nondetString1~0.base, main_~nondetString1~0.offset, 1);main_~nondetString1~0.base, main_~nondetString1~0.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset + (main_~length1~0 - 1);cstrlen_#in~s.base, cstrlen_#in~s.offset := main_~nondetString1~0.base, main_~nondetString1~0.offset;havoc cstrlen_#res;havoc cstrlen_#t~post206.base, cstrlen_#t~post206.offset, cstrlen_#t~mem205, cstrlen_~s.base, cstrlen_~s.offset, cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~s.base, cstrlen_~s.offset := cstrlen_#in~s.base, cstrlen_#in~s.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_~s.base, cstrlen_~s.offset; 7#L367-3true [2020-11-28 03:18:07,412 INFO L796 eck$LassoCheckResult]: Loop: 7#L367-3true call cstrlen_#t~mem205 := read~int(cstrlen_~p~0.base, cstrlen_~p~0.offset, 1); 4#L367-1true assume !!(0 != cstrlen_#t~mem205);havoc cstrlen_#t~mem205;cstrlen_#t~post206.base, cstrlen_#t~post206.offset := cstrlen_~p~0.base, cstrlen_~p~0.offset;cstrlen_~p~0.base, cstrlen_~p~0.offset := cstrlen_#t~post206.base, cstrlen_#t~post206.offset - 1;havoc cstrlen_#t~post206.base, cstrlen_#t~post206.offset; 7#L367-3true [2020-11-28 03:18:07,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:07,418 INFO L82 PathProgramCache]: Analyzing trace with hash 925669, now seen corresponding path program 1 times [2020-11-28 03:18:07,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:07,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234750852] [2020-11-28 03:18:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:07,543 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:07,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:07,599 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:07,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:07,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1414, now seen corresponding path program 1 times [2020-11-28 03:18:07,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:07,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981623228] [2020-11-28 03:18:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:07,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:07,619 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:07,623 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:07,625 INFO L82 PathProgramCache]: Analyzing trace with hash 889568362, now seen corresponding path program 1 times [2020-11-28 03:18:07,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:07,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286803544] [2020-11-28 03:18:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:07,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:07,683 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:18:07,711 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:18:07,718 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:18:08,042 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2020-11-28 03:18:08,133 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:18:08,134 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:18:08,134 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:18:08,134 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:18:08,134 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:18:08,134 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:08,134 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:18:08,135 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:18:08,135 INFO L133 ssoRankerPreferences]: Filename of dumped script: cstrlen_reverse_alloca.i_Iteration1_Lasso [2020-11-28 03:18:08,135 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:18:08,135 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:18:08,161 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:08,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:08,361 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-11-28 03:18:08,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:08,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:08,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:08,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:08,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:08,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:08,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:08,500 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:18:08,904 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:18:08,909 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:08,917 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 [2020-11-28 03:18:08,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:18:08,919 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:18:08,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:18:08,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:18:08,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:18:08,923 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:18:08,923 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:08,925 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/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 [2020-11-28 03:18:08,953 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 [2020-11-28 03:18:08,956 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:18:08,956 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:18:08,956 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:18:08,956 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:18:08,962 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:18:08,962 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:18:08,967 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:09,009 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 [2020-11-28 03:18:09,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:18:09,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:18:09,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:18:09,011 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:18:09,028 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:18:09,028 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:18:09,045 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:18:09,254 INFO L443 ModelExtractionUtils]: Simplification made 10 calls to the SMT solver. [2020-11-28 03:18:09,254 INFO L444 ModelExtractionUtils]: 6 out of 28 variables were initially zero. Simplification set additionally 19 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f1a922b6-b748-4513-8ced-980d8da1531c/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:18:09,260 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:18:09,270 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2020-11-28 03:18:09,270 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:18:09,271 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_cstrlen_~p~0.offset, v_rep(select #length ULTIMATE.start_main_#t~malloc208.base)_1) = 2*ULTIMATE.start_cstrlen_~p~0.offset + 1*v_rep(select #length ULTIMATE.start_main_#t~malloc208.base)_1 Supporting invariants [] [2020-11-28 03:18:09,322 INFO L297 tatePredicateManager]: 3 out of 4 supporting invariants were superfluous and have been removed [2020-11-28 03:18:09,332 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 03:18:09,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:09,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:09,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:18:09,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:09,422 WARN L261 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:18:09,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:09,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:09,469 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 [2020-11-28 03:18:09,471 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states. Second operand 3 states. [2020-11-28 03:18:09,546 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states.. Second operand 3 states. Result 20 states and 23 transitions. Complement of second has 6 states. [2020-11-28 03:18:09,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:18:09,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:18:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-28 03:18:09,550 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 03:18:09,551 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:09,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-28 03:18:09,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:09,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-28 03:18:09,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:18:09,553 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 23 transitions. [2020-11-28 03:18:09,555 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:18:09,557 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2020-11-28 03:18:09,558 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:18:09,558 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:18:09,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:18:09,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:18:09,559 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:18:09,559 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:18:09,559 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:18:09,559 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:18:09,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:18:09,560 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:18:09,560 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:18:09,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:18:09 BoogieIcfgContainer [2020-11-28 03:18:09,565 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:18:09,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:18:09,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:18:09,566 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:18:09,566 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:07" (3/4) ... [2020-11-28 03:18:09,569 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:18:09,569 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:18:09,571 INFO L168 Benchmark]: Toolchain (without parser) took 3318.74 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 76.3 MB in the beginning and 60.1 MB in the end (delta: 16.2 MB). Peak memory consumption was 48.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:09,572 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 35.2 MB in the beginning and 35.1 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:09,572 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.46 ms. Allocated memory is still 107.0 MB. Free memory was 76.0 MB in the beginning and 68.3 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:09,573 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.84 ms. Allocated memory is still 107.0 MB. Free memory was 68.3 MB in the beginning and 66.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:09,573 INFO L168 Benchmark]: Boogie Preprocessor took 51.65 ms. Allocated memory is still 107.0 MB. Free memory was 66.2 MB in the beginning and 64.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:09,574 INFO L168 Benchmark]: RCFGBuilder took 339.37 ms. Allocated memory is still 107.0 MB. Free memory was 64.7 MB in the beginning and 52.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:09,575 INFO L168 Benchmark]: BuchiAutomizer took 2255.33 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 52.8 MB in the beginning and 60.1 MB in the end (delta: -7.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:09,575 INFO L168 Benchmark]: Witness Printer took 3.72 ms. Allocated memory is still 138.4 MB. Free memory is still 60.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:09,579 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 35.2 MB in the beginning and 35.1 MB in the end (delta: 37.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 590.46 ms. Allocated memory is still 107.0 MB. Free memory was 76.0 MB in the beginning and 68.3 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 67.84 ms. Allocated memory is still 107.0 MB. Free memory was 68.3 MB in the beginning and 66.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.65 ms. Allocated memory is still 107.0 MB. Free memory was 66.2 MB in the beginning and 64.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 339.37 ms. Allocated memory is still 107.0 MB. Free memory was 64.7 MB in the beginning and 52.8 MB in the end (delta: 11.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2255.33 ms. Allocated memory was 107.0 MB in the beginning and 138.4 MB in the end (delta: 31.5 MB). Free memory was 52.8 MB in the beginning and 60.1 MB in the end (delta: -7.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.72 ms. Allocated memory is still 138.4 MB. Free memory is still 60.1 MB. 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 2 * p + unknown-#length-unknown[__builtin_alloca(length1 * sizeof(char))] and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 6 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 8 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital119 mio100 ax100 hnf99 lsp94 ukn90 mio100 lsp48 div100 bol100 ite100 ukn100 eq193 hnf89 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 17ms 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...