./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i -s /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/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 32bit --witnessprinter.graph.data.programhash 8c573b473fe5d13973daf8eaca36a6666498a98a ........................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:15:26,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:15:26,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:15:26,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:15:26,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:15:26,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:15:26,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:15:26,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:15:26,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:15:26,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:15:26,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:15:26,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:15:26,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:15:26,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:15:26,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:15:26,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:15:27,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:15:27,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:15:27,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:15:27,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:15:27,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:15:27,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:15:27,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:15:27,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:15:27,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:15:27,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:15:27,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:15:27,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:15:27,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:15:27,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:15:27,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:15:27,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:15:27,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:15:27,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:15:27,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:15:27,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:15:27,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:15:27,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:15:27,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:15:27,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:15:27,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:15:27,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 03:15:27,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:15:27,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:15:27,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:15:27,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:15:27,084 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:15:27,084 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:15:27,085 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:15:27,085 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:15:27,085 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:15:27,086 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:15:27,086 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:15:27,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:15:27,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:15:27,087 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:15:27,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:15:27,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:15:27,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:15:27,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:15:27,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:15:27,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:15:27,089 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:15:27,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:15:27,089 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:15:27,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:15:27,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:15:27,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:15:27,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:15:27,090 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:15:27,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:15:27,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:15:27,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:15:27,091 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:15:27,093 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:15:27,093 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_be0bef3c-d573-42b1-9b04-19ff8a8891e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c573b473fe5d13973daf8eaca36a6666498a98a [2020-11-28 03:15:27,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:15:27,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:15:27,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:15:27,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:15:27,409 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:15:27,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2020-11-28 03:15:27,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/data/8daa787f5/7926b5fca2b54ed2abea73e2b3f8dcd7/FLAG3c66b7cf2 [2020-11-28 03:15:28,084 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:15:28,093 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2020-11-28 03:15:28,104 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/data/8daa787f5/7926b5fca2b54ed2abea73e2b3f8dcd7/FLAG3c66b7cf2 [2020-11-28 03:15:28,412 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/data/8daa787f5/7926b5fca2b54ed2abea73e2b3f8dcd7 [2020-11-28 03:15:28,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:15:28,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:15:28,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:28,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:15:28,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:15:28,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47954708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28, skipping insertion in model container [2020-11-28 03:15:28,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:15:28,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:15:28,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:15:28,752 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:15:28,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:15:28,787 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:15:28,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28 WrapperNode [2020-11-28 03:15:28,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:15:28,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:15:28,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:15:28,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:15:28,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:15:28,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:15:28,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:15:28,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:15:28,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... [2020-11-28 03:15:28,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:15:28,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:15:28,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:15:28,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:15:28,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/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 03:15:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:15:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:15:28,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:15:28,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:15:29,346 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:15:29,357 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-28 03:15:29,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:29 BoogieIcfgContainer [2020-11-28 03:15:29,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:15:29,366 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:15:29,366 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:15:29,370 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:15:29,378 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:15:29,379 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:15:28" (1/3) ... [2020-11-28 03:15:29,381 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ed85d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:15:29, skipping insertion in model container [2020-11-28 03:15:29,381 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:15:29,381 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:28" (2/3) ... [2020-11-28 03:15:29,382 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ed85d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:15:29, skipping insertion in model container [2020-11-28 03:15:29,382 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:15:29,382 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:29" (3/3) ... [2020-11-28 03:15:29,384 INFO L373 chiAutomizerObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2020-11-28 03:15:29,477 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:15:29,478 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:15:29,478 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:15:29,478 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:15:29,479 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:15:29,479 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:15:29,479 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:15:29,479 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:15:29,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2020-11-28 03:15:29,514 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-11-28 03:15:29,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:15:29,515 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:15:29,523 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:29,523 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:15:29,523 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:15:29,523 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states. [2020-11-28 03:15:29,526 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-11-28 03:15:29,527 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:15:29,527 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:15:29,528 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:15:29,528 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:15:29,537 INFO L794 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 11#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post6, main_~p~0, main_~i~0, main_~leader_len~0, main_~bufsize~0, main_~bufsize_0~0, main_~ielen~0;havoc main_~p~0;havoc main_~i~0;havoc main_~leader_len~0;havoc main_~bufsize~0;havoc main_~bufsize_0~0;havoc main_~ielen~0;main_~leader_len~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~bufsize~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~ielen~0 := main_#t~nondet5;havoc main_#t~nondet5; 27#L35true assume !!(main_~leader_len~0 < 1000000); 19#L36true assume !!(main_~bufsize~0 < 1000000); 20#L37true assume !!(main_~ielen~0 < 1000000); 8#L38true assume main_~leader_len~0 > 0; 6#L38-1true assume main_~bufsize~0 > 0; 21#L39true assume main_~ielen~0 > 0; 10#L40true assume !(main_~bufsize~0 < main_~leader_len~0);main_~p~0 := 0;main_~bufsize_0~0 := main_~bufsize~0;main_~bufsize~0 := main_~bufsize~0 - main_~leader_len~0;main_~p~0 := main_~p~0 + main_~leader_len~0; 3#L47true assume !(main_~bufsize~0 < 2 * main_~ielen~0);main_~i~0 := 0; 18#L49-3true [2020-11-28 03:15:29,537 INFO L796 eck$LassoCheckResult]: Loop: 18#L49-3true assume !!(main_~i~0 < main_~ielen~0 && main_~bufsize~0 > 2);__VERIFIER_assert_#in~cond := (if 0 <= main_~p~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 9#L18true assume !(0 == __VERIFIER_assert_~cond); 7#L18-2true __VERIFIER_assert_#in~cond := (if 1 + main_~p~0 < main_~bufsize_0~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 4#L18-3true assume !(0 == __VERIFIER_assert_~cond); 16#L18-5true main_~p~0 := 2 + main_~p~0; 5#L49-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 18#L49-3true [2020-11-28 03:15:29,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:29,545 INFO L82 PathProgramCache]: Analyzing trace with hash 763959638, now seen corresponding path program 1 times [2020-11-28 03:15:29,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:29,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486075307] [2020-11-28 03:15:29,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:15:29,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:15:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:15:29,714 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:15:29,740 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:15:29,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:29,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1826073825, now seen corresponding path program 1 times [2020-11-28 03:15:29,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:29,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303053561] [2020-11-28 03:15:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:15:29,767 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:15:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:15:29,783 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:15:29,787 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:15:29,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:29,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1037281100, now seen corresponding path program 1 times [2020-11-28 03:15:29,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:15:29,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890148109] [2020-11-28 03:15:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:15:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:15:29,822 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:15:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:15:29,853 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:15:29,862 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:15:30,010 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-11-28 03:15:30,048 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:15:30,048 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:15:30,182 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2020-11-28 03:15:30,195 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:15:30,196 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:15:30,196 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:15:30,197 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:15:30,197 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:15:30,197 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:15:30,197 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:15:30,198 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:15:30,198 INFO L133 ssoRankerPreferences]: Filename of dumped script: MADWiFi-encode_ie_ok.i_Iteration1_Loop [2020-11-28 03:15:30,198 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:15:30,199 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:15:30,219 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 03:15:30,227 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 03:15:30,243 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 03:15:30,256 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 03:15:30,282 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 03:15:30,406 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:15:30,407 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/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 03:15:30,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:15:30,419 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:15:30,429 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:15:30,430 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/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 03:15:30,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:15:30,480 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/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 03:15:30,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:15:30,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:15:30,724 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:15:30,726 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:15:30,726 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:15:30,726 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:15:30,726 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:15:30,726 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:15:30,726 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:15:30,727 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:15:30,727 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:15:30,727 INFO L133 ssoRankerPreferences]: Filename of dumped script: MADWiFi-encode_ie_ok.i_Iteration1_Loop [2020-11-28 03:15:30,727 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:15:30,727 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:15:30,729 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 03:15:30,762 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 03:15:30,765 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 03:15:30,780 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 03:15:30,799 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 03:15:30,904 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:15:30,909 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/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 03:15:30,917 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 03:15:30,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:15:30,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:15:30,922 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:15:30,922 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:15:30,922 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:15:30,928 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:15:30,929 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:15:30,933 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:15:30,980 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 03:15:30,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:15:30,981 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:15:30,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:15:30,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:15:30,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:15:30,983 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:15:30,983 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:15:30,985 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:15:31,015 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 03:15:31,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:15:31,018 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:15:31,018 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:15:31,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:15:31,018 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:15:31,021 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:15:31,021 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:15:31,024 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:15:31,027 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:15:31,028 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_be0bef3c-d573-42b1-9b04-19ff8a8891e3/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:15:31,056 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:15:31,056 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:15:31,056 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:15:31,057 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ielen~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~ielen~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:15:31,103 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:15:31,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:15:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:31,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:15:31,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:15:31,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:15:31,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:15:31,299 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 03:15:31,327 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 03:15:31,329 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states. Second operand 3 states. [2020-11-28 03:15:31,398 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states.. Second operand 3 states. Result 54 states and 75 transitions. Complement of second has 7 states. [2020-11-28 03:15:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:15:31,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:15:31,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2020-11-28 03:15:31,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 58 transitions. Stem has 10 letters. Loop has 6 letters. [2020-11-28 03:15:31,408 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:15:31,409 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 58 transitions. Stem has 16 letters. Loop has 6 letters. [2020-11-28 03:15:31,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:15:31,409 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 58 transitions. Stem has 10 letters. Loop has 12 letters. [2020-11-28 03:15:31,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:15:31,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 75 transitions. [2020-11-28 03:15:31,427 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:15:31,430 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 0 states and 0 transitions. [2020-11-28 03:15:31,432 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:15:31,433 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:15:31,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:15:31,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:15:31,434 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:15:31,434 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:15:31,434 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:15:31,434 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:15:31,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:15:31,435 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:15:31,435 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:15:31,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:15:31 BoogieIcfgContainer [2020-11-28 03:15:31,442 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:15:31,443 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:15:31,443 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:15:31,443 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:15:31,444 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:29" (3/4) ... [2020-11-28 03:15:31,448 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:15:31,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:15:31,451 INFO L168 Benchmark]: Toolchain (without parser) took 3032.34 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 94.9 MB in the beginning and 114.0 MB in the end (delta: -19.2 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:31,453 INFO L168 Benchmark]: CDTParser took 0.85 ms. Allocated memory is still 86.0 MB. Free memory was 43.5 MB in the beginning and 43.5 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:31,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.93 ms. Allocated memory is still 123.7 MB. Free memory was 94.9 MB in the beginning and 99.0 MB in the end (delta: -4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:31,456 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.76 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 97.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:31,457 INFO L168 Benchmark]: Boogie Preprocessor took 26.97 ms. Allocated memory is still 123.7 MB. Free memory was 97.7 MB in the beginning and 96.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:31,458 INFO L168 Benchmark]: RCFGBuilder took 502.75 ms. Allocated memory is still 123.7 MB. Free memory was 96.5 MB in the beginning and 83.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:15:31,460 INFO L168 Benchmark]: BuchiAutomizer took 2076.50 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 82.6 MB in the beginning and 114.0 MB in the end (delta: -31.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:31,465 INFO L168 Benchmark]: Witness Printer took 4.77 ms. Allocated memory is still 148.9 MB. Free memory is still 114.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:15:31,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85 ms. Allocated memory is still 86.0 MB. Free memory was 43.5 MB in the beginning and 43.5 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.93 ms. Allocated memory is still 123.7 MB. Free memory was 94.9 MB in the beginning and 99.0 MB in the end (delta: -4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.76 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 97.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.97 ms. Allocated memory is still 123.7 MB. Free memory was 97.7 MB in the beginning and 96.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 502.75 ms. Allocated memory is still 123.7 MB. Free memory was 96.5 MB in the beginning and 83.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2076.50 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 82.6 MB in the beginning and 114.0 MB in the end (delta: -31.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.77 ms. Allocated memory is still 148.9 MB. Free memory is still 114.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function ielen + -1 * i and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. 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: 30 SDtfs, 39 SDslu, 12 SDs, 0 SdLazy, 6 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital32 mio100 ax100 hnf100 lsp46 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq139 hnf95 smp100 dnf100 smp100 tf110 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...