./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product29.cil.c --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_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product29.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/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 1ca2698f50cfe3ddca4bab16f9af1351901ac429 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 18:55:46,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:55:46,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:55:46,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:55:46,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:55:46,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:55:46,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:55:46,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:55:46,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:55:46,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:55:46,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:55:46,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:55:46,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:55:46,111 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:55:46,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:55:46,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:55:46,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:55:46,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:55:46,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:55:46,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:55:46,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:55:46,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:55:46,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:55:46,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:55:46,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:55:46,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:55:46,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:55:46,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:55:46,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:55:46,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:55:46,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:55:46,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:55:46,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:55:46,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:55:46,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:55:46,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:55:46,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:55:46,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:55:46,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:55:46,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:55:46,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:55:46,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-29 18:55:46,213 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:55:46,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:55:46,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:55:46,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:55:46,215 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:55:46,216 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 18:55:46,216 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 18:55:46,216 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 18:55:46,216 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 18:55:46,217 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 18:55:46,218 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 18:55:46,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:55:46,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:55:46,218 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 18:55:46,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:55:46,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:55:46,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:55:46,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 18:55:46,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 18:55:46,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 18:55:46,220 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:55:46,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:55:46,220 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 18:55:46,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:55:46,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 18:55:46,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:55:46,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:55:46,221 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 18:55:46,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:55:46,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:55:46,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:55:46,222 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 18:55:46,224 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 18:55:46,224 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_f33fb177-2cbb-422f-a237-4a73f441bb4a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ca2698f50cfe3ddca4bab16f9af1351901ac429 [2020-11-29 18:55:46,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:55:46,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:55:46,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:55:46,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:55:46,548 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:55:46,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer/../../sv-benchmarks/c/product-lines/email_spec6_product29.cil.c [2020-11-29 18:55:46,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer/data/165556e78/b7298307ba6040288768e512f7849043/FLAG84b0f8b07 [2020-11-29 18:55:47,314 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:55:47,315 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/sv-benchmarks/c/product-lines/email_spec6_product29.cil.c [2020-11-29 18:55:47,337 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer/data/165556e78/b7298307ba6040288768e512f7849043/FLAG84b0f8b07 [2020-11-29 18:55:47,503 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer/data/165556e78/b7298307ba6040288768e512f7849043 [2020-11-29 18:55:47,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:55:47,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:55:47,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:55:47,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:55:47,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:55:47,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:55:47" (1/1) ... [2020-11-29 18:55:47,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448b3f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:47, skipping insertion in model container [2020-11-29 18:55:47,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:55:47" (1/1) ... [2020-11-29 18:55:47,526 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:55:47,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:55:48,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:55:48,341 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:55:48,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:55:48,586 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:55:48,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:48 WrapperNode [2020-11-29 18:55:48,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:55:48,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:55:48,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:55:48,588 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:55:48,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:48" (1/1) ... [2020-11-29 18:55:48,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:48" (1/1) ... [2020-11-29 18:55:48,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:55:48,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:55:48,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:55:48,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:55:48,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:48" (1/1) ... [2020-11-29 18:55:48,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:48" (1/1) ... [2020-11-29 18:55:48,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:48" (1/1) ... [2020-11-29 18:55:48,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:48" (1/1) ... [2020-11-29 18:55:48,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:48" (1/1) ... [2020-11-29 18:55:49,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:48" (1/1) ... [2020-11-29 18:55:49,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:48" (1/1) ... [2020-11-29 18:55:49,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:55:49,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:55:49,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:55:49,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:55:49,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/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 [2020-11-29 18:55:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-11-29 18:55:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:55:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:55:49,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:55:49,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:55:53,147 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:55:53,147 INFO L298 CfgBuilder]: Removed 653 assume(true) statements. [2020-11-29 18:55:53,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:55:53 BoogieIcfgContainer [2020-11-29 18:55:53,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:55:53,154 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 18:55:53,154 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 18:55:53,158 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 18:55:53,159 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:55:53,159 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 06:55:47" (1/3) ... [2020-11-29 18:55:53,161 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6fabbeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:55:53, skipping insertion in model container [2020-11-29 18:55:53,162 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:55:53,162 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:55:48" (2/3) ... [2020-11-29 18:55:53,163 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6fabbeb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 06:55:53, skipping insertion in model container [2020-11-29 18:55:53,163 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 18:55:53,163 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:55:53" (3/3) ... [2020-11-29 18:55:53,166 INFO L373 chiAutomizerObserver]: Analyzing ICFG email_spec6_product29.cil.c [2020-11-29 18:55:53,238 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 18:55:53,239 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 18:55:53,239 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 18:55:53,239 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:55:53,239 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:55:53,239 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 18:55:53,239 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:55:53,239 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 18:55:53,286 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1046 states. [2020-11-29 18:55:53,374 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 251 [2020-11-29 18:55:53,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:55:53,375 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:55:53,385 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:55:53,385 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-29 18:55:53,386 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 18:55:53,386 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1046 states. [2020-11-29 18:55:53,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 251 [2020-11-29 18:55:53,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:55:53,419 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:55:53,434 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:55:53,434 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-29 18:55:53,449 INFO L794 eck$LassoCheckResult]: Stem: 349#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(28);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string7.base, #t~string7.offset := #Ultimate.allocOnStack(44);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(44);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(9);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(9);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(11);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(19);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string25.base, #t~string25.offset, 1);call write~init~int(100, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(10, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string28.base, #t~string28.offset, 1);call write~init~int(100, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(10, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 3 + #t~string28.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(19);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(16);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(19);call #t~string95.base, #t~string95.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string95.base, #t~string95.offset, 1);call write~init~int(115, #t~string95.base, 1 + #t~string95.offset, 1);call write~init~int(10, #t~string95.base, 2 + #t~string95.offset, 1);call write~init~int(0, #t~string95.base, 3 + #t~string95.offset, 1);call #t~string99.base, #t~string99.offset := #Ultimate.allocOnStack(10);call #t~string102.base, #t~string102.offset := #Ultimate.allocOnStack(12);call #t~string105.base, #t~string105.offset := #Ultimate.allocOnStack(10);call #t~string108.base, #t~string108.offset := #Ultimate.allocOnStack(18);call #t~string111.base, #t~string111.offset := #Ultimate.allocOnStack(16);call #t~string114.base, #t~string114.offset := #Ultimate.allocOnStack(21);call #t~string117.base, #t~string117.offset := #Ultimate.allocOnStack(13);call #t~string120.base, #t~string120.offset := #Ultimate.allocOnStack(16);call #t~string123.base, #t~string123.offset := #Ultimate.allocOnStack(25);call #t~string127.base, #t~string127.offset := #Ultimate.allocOnStack(10);call #t~string134.base, #t~string134.offset := #Ultimate.allocOnStack(34);call #t~string137.base, #t~string137.offset := #Ultimate.allocOnStack(30);call #t~string141.base, #t~string141.offset := #Ultimate.allocOnStack(16);call #t~string149.base, #t~string149.offset := #Ultimate.allocOnStack(20);~__SELECTED_FEATURE_Base~0 := 0;~__SELECTED_FEATURE_Keys~0 := 0;~__SELECTED_FEATURE_Encrypt~0 := 0;~__SELECTED_FEATURE_AutoResponder~0 := 0;~__SELECTED_FEATURE_AddressBook~0 := 0;~__SELECTED_FEATURE_Sign~0 := 0;~__SELECTED_FEATURE_Forward~0 := 0;~__SELECTED_FEATURE_Verify~0 := 0;~__SELECTED_FEATURE_Decrypt~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~__GUIDSL_NON_TERMINAL_main~0 := 0;~bob~0 := 0;~rjh~0 := 0;~chuck~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~sent_encrypted~0 := -1;~__ste_Client_counter~0 := 0;~__ste_client_name0~0.base, ~__ste_client_name0~0.offset := 0, 0;~__ste_client_name1~0.base, ~__ste_client_name1~0.offset := 0, 0;~__ste_client_name2~0.base, ~__ste_client_name2~0.offset := 0, 0;~__ste_client_outbuffer0~0 := 0;~__ste_client_outbuffer1~0 := 0;~__ste_client_outbuffer2~0 := 0;~__ste_client_outbuffer3~0 := 0;~__ste_ClientAddressBook_size0~0 := 0;~__ste_ClientAddressBook_size1~0 := 0;~__ste_ClientAddressBook_size2~0 := 0;~__ste_Client_AddressBook0_Alias0~0 := 0;~__ste_Client_AddressBook0_Alias1~0 := 0;~__ste_Client_AddressBook0_Alias2~0 := 0;~__ste_Client_AddressBook1_Alias0~0 := 0;~__ste_Client_AddressBook1_Alias1~0 := 0;~__ste_Client_AddressBook1_Alias2~0 := 0;~__ste_Client_AddressBook2_Alias0~0 := 0;~__ste_Client_AddressBook2_Alias1~0 := 0;~__ste_Client_AddressBook2_Alias2~0 := 0;~__ste_Client_AddressBook0_Address0~0 := 0;~__ste_Client_AddressBook0_Address1~0 := 0;~__ste_Client_AddressBook0_Address2~0 := 0;~__ste_Client_AddressBook1_Address0~0 := 0;~__ste_Client_AddressBook1_Address1~0 := 0;~__ste_Client_AddressBook1_Address2~0 := 0;~__ste_Client_AddressBook2_Address0~0 := 0;~__ste_Client_AddressBook2_Address1~0 := 0;~__ste_Client_AddressBook2_Address2~0 := 0;~__ste_client_autoResponse0~0 := 0;~__ste_client_autoResponse1~0 := 0;~__ste_client_autoResponse2~0 := 0;~__ste_client_privateKey0~0 := 0;~__ste_client_privateKey1~0 := 0;~__ste_client_privateKey2~0 := 0;~__ste_ClientKeyring_size0~0 := 0;~__ste_ClientKeyring_size1~0 := 0;~__ste_ClientKeyring_size2~0 := 0;~__ste_Client_Keyring0_User0~0 := 0;~__ste_Client_Keyring0_User1~0 := 0;~__ste_Client_Keyring0_User2~0 := 0;~__ste_Client_Keyring1_User0~0 := 0;~__ste_Client_Keyring1_User1~0 := 0;~__ste_Client_Keyring1_User2~0 := 0;~__ste_Client_Keyring2_User0~0 := 0;~__ste_Client_Keyring2_User1~0 := 0;~__ste_Client_Keyring2_User2~0 := 0;~__ste_Client_Keyring0_PublicKey0~0 := 0;~__ste_Client_Keyring0_PublicKey1~0 := 0;~__ste_Client_Keyring0_PublicKey2~0 := 0;~__ste_Client_Keyring1_PublicKey0~0 := 0;~__ste_Client_Keyring1_PublicKey1~0 := 0;~__ste_Client_Keyring1_PublicKey2~0 := 0;~__ste_Client_Keyring2_PublicKey0~0 := 0;~__ste_Client_Keyring2_PublicKey1~0 := 0;~__ste_Client_Keyring2_PublicKey2~0 := 0;~__ste_client_forwardReceiver0~0 := 0;~__ste_client_forwardReceiver1~0 := 0;~__ste_client_forwardReceiver2~0 := 0;~__ste_client_forwardReceiver3~0 := 0;~__ste_client_idCounter0~0 := 0;~__ste_client_idCounter1~0 := 0;~__ste_client_idCounter2~0 := 0;~__ste_Email_counter~0 := 0;~__ste_email_id0~0 := 0;~__ste_email_id1~0 := 0;~__ste_email_from0~0 := 0;~__ste_email_from1~0 := 0;~__ste_email_to0~0 := 0;~__ste_email_to1~0 := 0;~__ste_email_subject0~0.base, ~__ste_email_subject0~0.offset := 0, 0;~__ste_email_subject1~0.base, ~__ste_email_subject1~0.offset := 0, 0;~__ste_email_body0~0.base, ~__ste_email_body0~0.offset := 0, 0;~__ste_email_body1~0.base, ~__ste_email_body1~0.offset := 0, 0;~__ste_email_isEncrypted0~0 := 0;~__ste_email_isEncrypted1~0 := 0;~__ste_email_encryptionKey0~0 := 0;~__ste_email_encryptionKey1~0 := 0;~__ste_email_isSigned0~0 := 0;~__ste_email_isSigned1~0 := 0;~__ste_email_signKey0~0 := 0;~__ste_email_signKey1~0 := 0;~__ste_email_isSignatureVerified0~0 := 0;~__ste_email_isSignatureVerified1~0 := 0;~queue_empty~0 := 1;~queued_message~0 := 0;~queued_client~0 := 0; 284#L-1true havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 459#L2111true havoc valid_product_#res;havoc valid_product_~retValue_acc~23;havoc valid_product_~retValue_acc~23;valid_product_~retValue_acc~23 := 1;valid_product_#res := valid_product_~retValue_acc~23; 137#L2119true main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 60#L224true assume 0 != main_~tmp~1;havoc setup_#t~nondet15, setup_#t~nondet17, setup_#t~nondet19, setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset, setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset, setup_~__cil_tmp3~0.base, setup_~__cil_tmp3~0.offset;havoc setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset;havoc setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset;havoc setup_~__cil_tmp3~0.base, setup_~__cil_tmp3~0.offset;~bob~0 := 1;setup_bob_#in~bob___0 := ~bob~0;havoc setup_bob_~bob___0;setup_bob_~bob___0 := setup_bob_#in~bob___0;setup_bob__wrappee__Base_#in~bob___0 := setup_bob_~bob___0;havoc setup_bob__wrappee__Base_~bob___0;setup_bob__wrappee__Base_~bob___0 := setup_bob__wrappee__Base_#in~bob___0;setClientId_#in~handle, setClientId_#in~value := setup_bob__wrappee__Base_~bob___0, setup_bob__wrappee__Base_~bob___0;havoc setClientId_~handle, setClientId_~value;setClientId_~handle := setClientId_#in~handle;setClientId_~value := setClientId_#in~value; 265#L1830true assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 984#L1836-2true setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := setup_bob_~bob___0, 123;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 1022#L1395true assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 744#L1401-2true setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset := #t~string14.base, #t~string14.offset;havoc setup_#t~nondet15;~rjh~0 := 2;setup_rjh_#in~rjh___0 := ~rjh~0;havoc setup_rjh_~rjh___0;setup_rjh_~rjh___0 := setup_rjh_#in~rjh___0;setup_rjh__wrappee__Base_#in~rjh___0 := setup_rjh_~rjh___0;havoc setup_rjh__wrappee__Base_~rjh___0;setup_rjh__wrappee__Base_~rjh___0 := setup_rjh__wrappee__Base_#in~rjh___0;setClientId_#in~handle, setClientId_#in~value := setup_rjh__wrappee__Base_~rjh___0, setup_rjh__wrappee__Base_~rjh___0;havoc setClientId_~handle, setClientId_~value;setClientId_~handle := setClientId_#in~handle;setClientId_~value := setClientId_#in~value; 258#L1830-2true assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 970#L1836-5true setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := setup_rjh_~rjh___0, 456;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 1028#L1395-2true assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 730#L1401-5true setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset := #t~string16.base, #t~string16.offset;havoc setup_#t~nondet17;~chuck~0 := 3;setup_chuck_#in~chuck___0 := ~chuck~0;havoc setup_chuck_~chuck___0;setup_chuck_~chuck___0 := setup_chuck_#in~chuck___0;setup_chuck__wrappee__Base_#in~chuck___0 := setup_chuck_~chuck___0;havoc setup_chuck__wrappee__Base_~chuck___0;setup_chuck__wrappee__Base_~chuck___0 := setup_chuck__wrappee__Base_#in~chuck___0;setClientId_#in~handle, setClientId_#in~value := setup_chuck__wrappee__Base_~chuck___0, setup_chuck__wrappee__Base_~chuck___0;havoc setClientId_~handle, setClientId_~value;setClientId_~handle := setClientId_#in~handle;setClientId_~value := setClientId_#in~value; 259#L1830-4true assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 943#L1836-8true setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := setup_chuck_~chuck___0, 789;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 1034#L1395-4true assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 736#L1401-8true setup_~__cil_tmp3~0.base, setup_~__cil_tmp3~0.offset := #t~string18.base, #t~string18.offset;havoc setup_#t~nondet19; 773#L211true havoc test_#t~nondet84, test_#t~nondet85, test_#t~nondet86, test_#t~nondet87, test_#t~nondet88, test_#t~nondet89, test_#t~nondet90, test_#t~nondet91, test_#t~nondet92, test_#t~nondet93, test_#t~nondet94, test_~op1~0, test_~op2~0, test_~op3~0, test_~op4~0, test_~op5~0, test_~op6~0, test_~op7~0, test_~op8~0, test_~op9~0, test_~op10~0, test_~op11~0, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~3, test_~tmp___1~2, test_~tmp___2~0, test_~tmp___3~0, test_~tmp___4~0, test_~tmp___5~0, test_~tmp___6~0, test_~tmp___7~0, test_~tmp___8~0, test_~tmp___9~0;havoc test_~op1~0;havoc test_~op2~0;havoc test_~op3~0;havoc test_~op4~0;havoc test_~op5~0;havoc test_~op6~0;havoc test_~op7~0;havoc test_~op8~0;havoc test_~op9~0;havoc test_~op10~0;havoc test_~op11~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~3;havoc test_~tmp___1~2;havoc test_~tmp___2~0;havoc test_~tmp___3~0;havoc test_~tmp___4~0;havoc test_~tmp___5~0;havoc test_~tmp___6~0;havoc test_~tmp___7~0;havoc test_~tmp___8~0;havoc test_~tmp___9~0;test_~op1~0 := 0;test_~op2~0 := 0;test_~op3~0 := 0;test_~op4~0 := 0;test_~op5~0 := 0;test_~op6~0 := 0;test_~op7~0 := 0;test_~op8~0 := 0;test_~op9~0 := 0;test_~op10~0 := 0;test_~op11~0 := 0;test_~splverifierCounter~0 := 0; 504#L2041-1true [2020-11-29 18:55:53,450 INFO L796 eck$LassoCheckResult]: Loop: 504#L2041-1true assume !false; 264#L1896true assume test_~splverifierCounter~0 < 4; 73#L1897true test_~splverifierCounter~0 := 1 + test_~splverifierCounter~0; 839#L1903true assume !(0 == test_~op1~0); 345#L1916true assume 0 == test_~op2~0;test_~tmp___8~0 := test_#t~nondet85;havoc test_#t~nondet85; 133#L1921true assume 0 != test_~tmp___8~0;test_~op2~0 := 1; 504#L2041-1true [2020-11-29 18:55:53,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:55:53,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1291925977, now seen corresponding path program 1 times [2020-11-29 18:55:53,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:55:53,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742307786] [2020-11-29 18:55:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:55:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:55:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:55:53,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742307786] [2020-11-29 18:55:53,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:55:53,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 18:55:53,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483820330] [2020-11-29 18:55:53,976 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 18:55:53,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:55:53,978 INFO L82 PathProgramCache]: Analyzing trace with hash 590492675, now seen corresponding path program 1 times [2020-11-29 18:55:53,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:55:53,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551921122] [2020-11-29 18:55:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:55:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:55:54,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:55:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:55:54,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:55:54,069 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:55:54,146 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:55:54,147 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:55:54,147 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:55:54,147 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:55:54,148 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:55:54,148 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:55:54,148 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:55:54,148 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:55:54,154 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec6_product29.cil.c_Iteration1_Loop [2020-11-29 18:55:54,155 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:55:54,160 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:55:54,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:54,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:54,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:54,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:54,330 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:55:54,332 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/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) [2020-11-29 18:55:54,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:55:54,356 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 [2020-11-29 18:55:54,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 18:55:54,375 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_test_#t~nondet85=-1, ULTIMATE.start_test_~tmp___8~0=-1} Honda state: {ULTIMATE.start_test_#t~nondet85=-1, ULTIMATE.start_test_~tmp___8~0=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/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) [2020-11-29 18:55:54,430 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:55:54,430 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/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) [2020-11-29 18:55:54,491 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:55:54,492 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:55:54,508 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:55:54,546 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:55:54,546 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:55:54,546 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:55:54,547 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:55:54,547 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:55:54,547 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:55:54,547 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:55:54,547 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:55:54,547 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec6_product29.cil.c_Iteration1_Loop [2020-11-29 18:55:54,547 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:55:54,547 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:55:54,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:54,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:54,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:54,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:54,854 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:55:54,859 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/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) [2020-11-29 18:55:54,869 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 [2020-11-29 18:55:54,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:55:54,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:55:54,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:55:54,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:55:54,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:55:54,882 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:55:54,882 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 18:55:54,886 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:55:54,890 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 18:55:54,891 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/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) [2020-11-29 18:55:54,901 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:55:54,902 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:55:54,903 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:55:54,903 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_test_~op2~0) = -2*ULTIMATE.start_test_~op2~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:55:54,946 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:55:54,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:55:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:55:55,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:55:55,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:55:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:55:55,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:55:55,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:55:55,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:55:55,404 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 [2020-11-29 18:55:55,406 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1046 states. Second operand 4 states. [2020-11-29 18:55:55,918 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1046 states.. Second operand 4 states. Result 4840 states and 8430 transitions. Complement of second has 7 states. [2020-11-29 18:55:55,919 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 [2020-11-29 18:55:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:55:55,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 4902 transitions. [2020-11-29 18:55:55,933 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 4902 transitions. Stem has 18 letters. Loop has 6 letters. [2020-11-29 18:55:55,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:55:55,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 4902 transitions. Stem has 24 letters. Loop has 6 letters. [2020-11-29 18:55:55,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:55:55,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 4902 transitions. Stem has 18 letters. Loop has 12 letters. [2020-11-29 18:55:55,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:55:55,937 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4840 states and 8430 transitions. [2020-11-29 18:55:56,012 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 501 [2020-11-29 18:55:56,036 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4840 states to 1035 states and 1896 transitions. [2020-11-29 18:55:56,038 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 532 [2020-11-29 18:55:56,041 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 533 [2020-11-29 18:55:56,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1035 states and 1896 transitions. [2020-11-29 18:55:56,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:55:56,051 INFO L691 BuchiCegarLoop]: Abstraction has 1035 states and 1896 transitions. [2020-11-29 18:55:56,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states and 1896 transitions. [2020-11-29 18:55:56,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 534. [2020-11-29 18:55:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-11-29 18:55:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 975 transitions. [2020-11-29 18:55:56,145 INFO L714 BuchiCegarLoop]: Abstraction has 534 states and 975 transitions. [2020-11-29 18:55:56,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:55:56,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 18:55:56,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 18:55:56,151 INFO L87 Difference]: Start difference. First operand 534 states and 975 transitions. Second operand 3 states. [2020-11-29 18:55:56,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:55:56,238 INFO L93 Difference]: Finished difference Result 1048 states and 1915 transitions. [2020-11-29 18:55:56,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:55:56,240 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1048 states and 1915 transitions. [2020-11-29 18:55:56,252 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 502 [2020-11-29 18:55:56,267 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1048 states to 1048 states and 1915 transitions. [2020-11-29 18:55:56,267 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 544 [2020-11-29 18:55:56,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 544 [2020-11-29 18:55:56,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1048 states and 1915 transitions. [2020-11-29 18:55:56,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 18:55:56,270 INFO L691 BuchiCegarLoop]: Abstraction has 1048 states and 1915 transitions. [2020-11-29 18:55:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states and 1915 transitions. [2020-11-29 18:55:56,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 533. [2020-11-29 18:55:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2020-11-29 18:55:56,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 971 transitions. [2020-11-29 18:55:56,296 INFO L714 BuchiCegarLoop]: Abstraction has 533 states and 971 transitions. [2020-11-29 18:55:56,297 INFO L594 BuchiCegarLoop]: Abstraction has 533 states and 971 transitions. [2020-11-29 18:55:56,297 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 18:55:56,297 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 533 states and 971 transitions. [2020-11-29 18:55:56,301 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 251 [2020-11-29 18:55:56,302 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 18:55:56,302 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 18:55:56,304 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:55:56,305 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:55:56,305 INFO L794 eck$LassoCheckResult]: Stem: 7938#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(28);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12);call #t~string7.base, #t~string7.offset := #Ultimate.allocOnStack(44);call #t~string12.base, #t~string12.offset := #Ultimate.allocOnStack(44);call #t~string14.base, #t~string14.offset := #Ultimate.allocOnStack(9);call #t~string16.base, #t~string16.offset := #Ultimate.allocOnStack(9);call #t~string18.base, #t~string18.offset := #Ultimate.allocOnStack(11);call #t~string22.base, #t~string22.offset := #Ultimate.allocOnStack(19);call #t~string25.base, #t~string25.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string25.base, #t~string25.offset, 1);call write~init~int(100, #t~string25.base, 1 + #t~string25.offset, 1);call write~init~int(10, #t~string25.base, 2 + #t~string25.offset, 1);call write~init~int(0, #t~string25.base, 3 + #t~string25.offset, 1);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string28.base, #t~string28.offset, 1);call write~init~int(100, #t~string28.base, 1 + #t~string28.offset, 1);call write~init~int(10, #t~string28.base, 2 + #t~string28.offset, 1);call write~init~int(0, #t~string28.base, 3 + #t~string28.offset, 1);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(30);call #t~string54.base, #t~string54.offset := #Ultimate.allocOnStack(9);call #t~string55.base, #t~string55.offset := #Ultimate.allocOnStack(21);call #t~string56.base, #t~string56.offset := #Ultimate.allocOnStack(30);call #t~string57.base, #t~string57.offset := #Ultimate.allocOnStack(9);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(21);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(30);call #t~string63.base, #t~string63.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(25);call #t~string65.base, #t~string65.offset := #Ultimate.allocOnStack(30);call #t~string66.base, #t~string66.offset := #Ultimate.allocOnStack(9);call #t~string67.base, #t~string67.offset := #Ultimate.allocOnStack(25);call #t~string70.base, #t~string70.offset := #Ultimate.allocOnStack(13);call #t~string73.base, #t~string73.offset := #Ultimate.allocOnStack(19);call #t~string75.base, #t~string75.offset := #Ultimate.allocOnStack(16);call #t~string77.base, #t~string77.offset := #Ultimate.allocOnStack(19);call #t~string95.base, #t~string95.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string95.base, #t~string95.offset, 1);call write~init~int(115, #t~string95.base, 1 + #t~string95.offset, 1);call write~init~int(10, #t~string95.base, 2 + #t~string95.offset, 1);call write~init~int(0, #t~string95.base, 3 + #t~string95.offset, 1);call #t~string99.base, #t~string99.offset := #Ultimate.allocOnStack(10);call #t~string102.base, #t~string102.offset := #Ultimate.allocOnStack(12);call #t~string105.base, #t~string105.offset := #Ultimate.allocOnStack(10);call #t~string108.base, #t~string108.offset := #Ultimate.allocOnStack(18);call #t~string111.base, #t~string111.offset := #Ultimate.allocOnStack(16);call #t~string114.base, #t~string114.offset := #Ultimate.allocOnStack(21);call #t~string117.base, #t~string117.offset := #Ultimate.allocOnStack(13);call #t~string120.base, #t~string120.offset := #Ultimate.allocOnStack(16);call #t~string123.base, #t~string123.offset := #Ultimate.allocOnStack(25);call #t~string127.base, #t~string127.offset := #Ultimate.allocOnStack(10);call #t~string134.base, #t~string134.offset := #Ultimate.allocOnStack(34);call #t~string137.base, #t~string137.offset := #Ultimate.allocOnStack(30);call #t~string141.base, #t~string141.offset := #Ultimate.allocOnStack(16);call #t~string149.base, #t~string149.offset := #Ultimate.allocOnStack(20);~__SELECTED_FEATURE_Base~0 := 0;~__SELECTED_FEATURE_Keys~0 := 0;~__SELECTED_FEATURE_Encrypt~0 := 0;~__SELECTED_FEATURE_AutoResponder~0 := 0;~__SELECTED_FEATURE_AddressBook~0 := 0;~__SELECTED_FEATURE_Sign~0 := 0;~__SELECTED_FEATURE_Forward~0 := 0;~__SELECTED_FEATURE_Verify~0 := 0;~__SELECTED_FEATURE_Decrypt~0 := 0;~__GUIDSL_ROOT_PRODUCTION~0 := 0;~__GUIDSL_NON_TERMINAL_main~0 := 0;~bob~0 := 0;~rjh~0 := 0;~chuck~0 := 0;~head~0.base, ~head~0.offset := 0, 0;~sent_encrypted~0 := -1;~__ste_Client_counter~0 := 0;~__ste_client_name0~0.base, ~__ste_client_name0~0.offset := 0, 0;~__ste_client_name1~0.base, ~__ste_client_name1~0.offset := 0, 0;~__ste_client_name2~0.base, ~__ste_client_name2~0.offset := 0, 0;~__ste_client_outbuffer0~0 := 0;~__ste_client_outbuffer1~0 := 0;~__ste_client_outbuffer2~0 := 0;~__ste_client_outbuffer3~0 := 0;~__ste_ClientAddressBook_size0~0 := 0;~__ste_ClientAddressBook_size1~0 := 0;~__ste_ClientAddressBook_size2~0 := 0;~__ste_Client_AddressBook0_Alias0~0 := 0;~__ste_Client_AddressBook0_Alias1~0 := 0;~__ste_Client_AddressBook0_Alias2~0 := 0;~__ste_Client_AddressBook1_Alias0~0 := 0;~__ste_Client_AddressBook1_Alias1~0 := 0;~__ste_Client_AddressBook1_Alias2~0 := 0;~__ste_Client_AddressBook2_Alias0~0 := 0;~__ste_Client_AddressBook2_Alias1~0 := 0;~__ste_Client_AddressBook2_Alias2~0 := 0;~__ste_Client_AddressBook0_Address0~0 := 0;~__ste_Client_AddressBook0_Address1~0 := 0;~__ste_Client_AddressBook0_Address2~0 := 0;~__ste_Client_AddressBook1_Address0~0 := 0;~__ste_Client_AddressBook1_Address1~0 := 0;~__ste_Client_AddressBook1_Address2~0 := 0;~__ste_Client_AddressBook2_Address0~0 := 0;~__ste_Client_AddressBook2_Address1~0 := 0;~__ste_Client_AddressBook2_Address2~0 := 0;~__ste_client_autoResponse0~0 := 0;~__ste_client_autoResponse1~0 := 0;~__ste_client_autoResponse2~0 := 0;~__ste_client_privateKey0~0 := 0;~__ste_client_privateKey1~0 := 0;~__ste_client_privateKey2~0 := 0;~__ste_ClientKeyring_size0~0 := 0;~__ste_ClientKeyring_size1~0 := 0;~__ste_ClientKeyring_size2~0 := 0;~__ste_Client_Keyring0_User0~0 := 0;~__ste_Client_Keyring0_User1~0 := 0;~__ste_Client_Keyring0_User2~0 := 0;~__ste_Client_Keyring1_User0~0 := 0;~__ste_Client_Keyring1_User1~0 := 0;~__ste_Client_Keyring1_User2~0 := 0;~__ste_Client_Keyring2_User0~0 := 0;~__ste_Client_Keyring2_User1~0 := 0;~__ste_Client_Keyring2_User2~0 := 0;~__ste_Client_Keyring0_PublicKey0~0 := 0;~__ste_Client_Keyring0_PublicKey1~0 := 0;~__ste_Client_Keyring0_PublicKey2~0 := 0;~__ste_Client_Keyring1_PublicKey0~0 := 0;~__ste_Client_Keyring1_PublicKey1~0 := 0;~__ste_Client_Keyring1_PublicKey2~0 := 0;~__ste_Client_Keyring2_PublicKey0~0 := 0;~__ste_Client_Keyring2_PublicKey1~0 := 0;~__ste_Client_Keyring2_PublicKey2~0 := 0;~__ste_client_forwardReceiver0~0 := 0;~__ste_client_forwardReceiver1~0 := 0;~__ste_client_forwardReceiver2~0 := 0;~__ste_client_forwardReceiver3~0 := 0;~__ste_client_idCounter0~0 := 0;~__ste_client_idCounter1~0 := 0;~__ste_client_idCounter2~0 := 0;~__ste_Email_counter~0 := 0;~__ste_email_id0~0 := 0;~__ste_email_id1~0 := 0;~__ste_email_from0~0 := 0;~__ste_email_from1~0 := 0;~__ste_email_to0~0 := 0;~__ste_email_to1~0 := 0;~__ste_email_subject0~0.base, ~__ste_email_subject0~0.offset := 0, 0;~__ste_email_subject1~0.base, ~__ste_email_subject1~0.offset := 0, 0;~__ste_email_body0~0.base, ~__ste_email_body0~0.offset := 0, 0;~__ste_email_body1~0.base, ~__ste_email_body1~0.offset := 0, 0;~__ste_email_isEncrypted0~0 := 0;~__ste_email_isEncrypted1~0 := 0;~__ste_email_encryptionKey0~0 := 0;~__ste_email_encryptionKey1~0 := 0;~__ste_email_isSigned0~0 := 0;~__ste_email_isSigned1~0 := 0;~__ste_email_signKey0~0 := 0;~__ste_email_signKey1~0 := 0;~__ste_email_isSignatureVerified0~0 := 0;~__ste_email_isSignatureVerified1~0 := 0;~queue_empty~0 := 1;~queued_message~0 := 0;~queued_client~0 := 0; 7629#L-1 havoc main_#res;havoc main_#t~ret20, main_~retValue_acc~0, main_~tmp~1;havoc main_~retValue_acc~0;havoc main_~tmp~1; 7630#L2111 havoc valid_product_#res;havoc valid_product_~retValue_acc~23;havoc valid_product_~retValue_acc~23;valid_product_~retValue_acc~23 := 1;valid_product_#res := valid_product_~retValue_acc~23; 8010#L2119 main_#t~ret20 := valid_product_#res;main_~tmp~1 := main_#t~ret20;havoc main_#t~ret20; 7767#L224 assume 0 != main_~tmp~1;havoc setup_#t~nondet15, setup_#t~nondet17, setup_#t~nondet19, setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset, setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset, setup_~__cil_tmp3~0.base, setup_~__cil_tmp3~0.offset;havoc setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset;havoc setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset;havoc setup_~__cil_tmp3~0.base, setup_~__cil_tmp3~0.offset;~bob~0 := 1;setup_bob_#in~bob___0 := ~bob~0;havoc setup_bob_~bob___0;setup_bob_~bob___0 := setup_bob_#in~bob___0;setup_bob__wrappee__Base_#in~bob___0 := setup_bob_~bob___0;havoc setup_bob__wrappee__Base_~bob___0;setup_bob__wrappee__Base_~bob___0 := setup_bob__wrappee__Base_#in~bob___0;setClientId_#in~handle, setClientId_#in~value := setup_bob__wrappee__Base_~bob___0, setup_bob__wrappee__Base_~bob___0;havoc setClientId_~handle, setClientId_~value;setClientId_~handle := setClientId_#in~handle;setClientId_~value := setClientId_#in~value; 7768#L1830 assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 7940#L1836-2 setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := setup_bob_~bob___0, 123;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 8098#L1395 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 7993#L1401-2 setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset := #t~string14.base, #t~string14.offset;havoc setup_#t~nondet15;~rjh~0 := 2;setup_rjh_#in~rjh___0 := ~rjh~0;havoc setup_rjh_~rjh___0;setup_rjh_~rjh___0 := setup_rjh_#in~rjh___0;setup_rjh__wrappee__Base_#in~rjh___0 := setup_rjh_~rjh___0;havoc setup_rjh__wrappee__Base_~rjh___0;setup_rjh__wrappee__Base_~rjh___0 := setup_rjh__wrappee__Base_#in~rjh___0;setClientId_#in~handle, setClientId_#in~value := setup_rjh__wrappee__Base_~rjh___0, setup_rjh__wrappee__Base_~rjh___0;havoc setClientId_~handle, setClientId_~value;setClientId_~handle := setClientId_#in~handle;setClientId_~value := setClientId_#in~value; 8097#L1830-2 assume !(1 == setClientId_~handle); 7946#L1833-2 assume 2 == setClientId_~handle;~__ste_client_idCounter1~0 := setClientId_~value; 7947#L1836-5 setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := setup_rjh_~rjh___0, 456;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 8095#L1395-2 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 7928#L1401-5 setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset := #t~string16.base, #t~string16.offset;havoc setup_#t~nondet17;~chuck~0 := 3;setup_chuck_#in~chuck___0 := ~chuck~0;havoc setup_chuck_~chuck___0;setup_chuck_~chuck___0 := setup_chuck_#in~chuck___0;setup_chuck__wrappee__Base_#in~chuck___0 := setup_chuck_~chuck___0;havoc setup_chuck__wrappee__Base_~chuck___0;setup_chuck__wrappee__Base_~chuck___0 := setup_chuck__wrappee__Base_#in~chuck___0;setClientId_#in~handle, setClientId_#in~value := setup_chuck__wrappee__Base_~chuck___0, setup_chuck__wrappee__Base_~chuck___0;havoc setClientId_~handle, setClientId_~value;setClientId_~handle := setClientId_#in~handle;setClientId_~value := setClientId_#in~value; 8094#L1830-4 assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 7977#L1836-8 setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := setup_chuck_~chuck___0, 789;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 8065#L1395-4 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 7949#L1401-8 setup_~__cil_tmp3~0.base, setup_~__cil_tmp3~0.offset := #t~string18.base, #t~string18.offset;havoc setup_#t~nondet19; 8096#L211 havoc test_#t~nondet84, test_#t~nondet85, test_#t~nondet86, test_#t~nondet87, test_#t~nondet88, test_#t~nondet89, test_#t~nondet90, test_#t~nondet91, test_#t~nondet92, test_#t~nondet93, test_#t~nondet94, test_~op1~0, test_~op2~0, test_~op3~0, test_~op4~0, test_~op5~0, test_~op6~0, test_~op7~0, test_~op8~0, test_~op9~0, test_~op10~0, test_~op11~0, test_~splverifierCounter~0, test_~tmp~9, test_~tmp___0~3, test_~tmp___1~2, test_~tmp___2~0, test_~tmp___3~0, test_~tmp___4~0, test_~tmp___5~0, test_~tmp___6~0, test_~tmp___7~0, test_~tmp___8~0, test_~tmp___9~0;havoc test_~op1~0;havoc test_~op2~0;havoc test_~op3~0;havoc test_~op4~0;havoc test_~op5~0;havoc test_~op6~0;havoc test_~op7~0;havoc test_~op8~0;havoc test_~op9~0;havoc test_~op10~0;havoc test_~op11~0;havoc test_~splverifierCounter~0;havoc test_~tmp~9;havoc test_~tmp___0~3;havoc test_~tmp___1~2;havoc test_~tmp___2~0;havoc test_~tmp___3~0;havoc test_~tmp___4~0;havoc test_~tmp___5~0;havoc test_~tmp___6~0;havoc test_~tmp___7~0;havoc test_~tmp___8~0;havoc test_~tmp___9~0;test_~op1~0 := 0;test_~op2~0 := 0;test_~op3~0 := 0;test_~op4~0 := 0;test_~op5~0 := 0;test_~op6~0 := 0;test_~op7~0 := 0;test_~op8~0 := 0;test_~op9~0 := 0;test_~op10~0 := 0;test_~op11~0 := 0;test_~splverifierCounter~0 := 0; 8099#L2041-1 assume !false; 7709#L1896 [2020-11-29 18:55:56,305 INFO L796 eck$LassoCheckResult]: Loop: 7709#L1896 assume test_~splverifierCounter~0 < 4; 7813#L1897 test_~splverifierCounter~0 := 1 + test_~splverifierCounter~0; 7787#L1903 assume !(0 == test_~op1~0); 7789#L1916 assume !(0 == test_~op2~0); 7867#L1927 assume 0 == test_~op3~0;test_~tmp___7~0 := test_#t~nondet86;havoc test_#t~nondet86; 7869#L1932 assume 0 != test_~tmp___7~0;setClientPrivateKey_#in~handle, setClientPrivateKey_#in~value := ~rjh~0, 0;havoc setClientPrivateKey_~handle, setClientPrivateKey_~value;setClientPrivateKey_~handle := setClientPrivateKey_#in~handle;setClientPrivateKey_~value := setClientPrivateKey_#in~value; 7990#L1395-6 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 7966#L1401-11 test_~op3~0 := 1; 7595#L2041-1 assume !false; 7709#L1896 [2020-11-29 18:55:56,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:55:56,306 INFO L82 PathProgramCache]: Analyzing trace with hash -953559564, now seen corresponding path program 1 times [2020-11-29 18:55:56,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:55:56,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021874644] [2020-11-29 18:55:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:55:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:55:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:55:56,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021874644] [2020-11-29 18:55:56,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:55:56,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 18:55:56,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778265930] [2020-11-29 18:55:56,496 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 18:55:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:55:56,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1296812605, now seen corresponding path program 1 times [2020-11-29 18:55:56,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:55:56,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674468220] [2020-11-29 18:55:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:55:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:55:56,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:55:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:55:56,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:55:56,532 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:55:56,643 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:55:56,643 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:55:56,643 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:55:56,644 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:55:56,644 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 18:55:56,644 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:55:56,644 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:55:56,644 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:55:56,644 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec6_product29.cil.c_Iteration2_Loop [2020-11-29 18:55:56,645 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:55:56,645 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:55:56,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:56,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:56,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:56,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:56,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:56,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:56,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:56,934 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:55:56,934 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/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) [2020-11-29 18:55:56,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 18:55:56,948 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/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) [2020-11-29 18:55:57,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 18:55:57,003 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:55:57,048 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 18:55:57,051 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 18:55:57,051 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 18:55:57,051 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 18:55:57,052 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 18:55:57,052 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 18:55:57,052 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:55:57,052 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 18:55:57,052 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 18:55:57,052 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec6_product29.cil.c_Iteration2_Loop [2020-11-29 18:55:57,052 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 18:55:57,052 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 18:55:57,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:57,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:57,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:57,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:57,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:57,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:57,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 18:55:57,355 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 18:55:57,355 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:55:57,368 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 [2020-11-29 18:55:57,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 18:55:57,370 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 18:55:57,370 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 18:55:57,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 18:55:57,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 18:55:57,379 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 18:55:57,379 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:55:57,384 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 18:55:57,394 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 18:55:57,394 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f33fb177-2cbb-422f-a237-4a73f441bb4a/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 18:55:57,401 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 18:55:57,401 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 18:55:57,401 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 18:55:57,401 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_test_~splverifierCounter~0) = -2*ULTIMATE.start_test_~splverifierCounter~0 + 7 Supporting invariants [] Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 18:55:57,439 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 18:55:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:55:57,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:55:57,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 18:55:57,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:55:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:55:57,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 18:55:57,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:55:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:55:57,711 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 18:55:57,712 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 533 states and 971 transitions. cyclomatic complexity: 440 Second operand 4 states. [2020-11-29 18:55:57,767 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 533 states and 971 transitions. cyclomatic complexity: 440. Second operand 4 states. Result 1039 states and 1901 transitions. Complement of second has 6 states. [2020-11-29 18:55:57,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 18:55:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 18:55:57,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2020-11-29 18:55:57,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 508 transitions. Stem has 20 letters. Loop has 9 letters. [2020-11-29 18:55:57,770 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:55:57,770 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 508 transitions. Stem has 29 letters. Loop has 9 letters. [2020-11-29 18:55:57,772 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:55:57,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 508 transitions. Stem has 20 letters. Loop has 18 letters. [2020-11-29 18:55:57,777 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 18:55:57,777 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1039 states and 1901 transitions. [2020-11-29 18:55:57,787 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:55:57,787 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1039 states to 0 states and 0 transitions. [2020-11-29 18:55:57,788 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 18:55:57,788 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 18:55:57,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 18:55:57,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:55:57,788 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:55:57,788 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:55:57,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:55:57,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:55:57,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:55:57,790 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-11-29 18:55:57,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:55:57,790 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-29 18:55:57,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:55:57,790 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-29 18:55:57,791 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:55:57,791 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 18:55:57,791 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 18:55:57,791 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 18:55:57,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 18:55:57,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 18:55:57,791 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:55:57,791 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:55:57,792 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 18:55:57,792 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 18:55:57,792 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 18:55:57,792 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 18:55:57,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 18:55:57,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 06:55:57 BoogieIcfgContainer [2020-11-29 18:55:57,798 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 18:55:57,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:55:57,799 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:55:57,799 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:55:57,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:55:53" (3/4) ... [2020-11-29 18:55:57,802 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:55:57,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:55:57,805 INFO L168 Benchmark]: Toolchain (without parser) took 10294.25 ms. Allocated memory was 77.6 MB in the beginning and 320.9 MB in the end (delta: 243.3 MB). Free memory was 52.6 MB in the beginning and 177.7 MB in the end (delta: -125.1 MB). Peak memory consumption was 118.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:55:57,805 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory was 54.7 MB in the beginning and 54.6 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:55:57,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1076.67 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 52.3 MB in the beginning and 47.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:55:57,808 INFO L168 Benchmark]: Boogie Procedure Inliner took 319.65 ms. Allocated memory is still 94.4 MB. Free memory was 47.6 MB in the beginning and 56.2 MB in the end (delta: -8.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-11-29 18:55:57,814 INFO L168 Benchmark]: Boogie Preprocessor took 190.74 ms. Allocated memory is still 94.4 MB. Free memory was 56.2 MB in the beginning and 42.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 18:55:57,815 INFO L168 Benchmark]: RCFGBuilder took 4052.57 ms. Allocated memory was 94.4 MB in the beginning and 201.3 MB in the end (delta: 107.0 MB). Free memory was 42.4 MB in the beginning and 130.1 MB in the end (delta: -87.7 MB). Peak memory consumption was 85.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:55:57,816 INFO L168 Benchmark]: BuchiAutomizer took 4643.73 ms. Allocated memory was 201.3 MB in the beginning and 320.9 MB in the end (delta: 119.5 MB). Free memory was 130.1 MB in the beginning and 177.7 MB in the end (delta: -47.6 MB). Peak memory consumption was 72.0 MB. Max. memory is 16.1 GB. [2020-11-29 18:55:57,817 INFO L168 Benchmark]: Witness Printer took 3.96 ms. Allocated memory is still 320.9 MB. Free memory is still 177.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:55:57,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 77.6 MB. Free memory was 54.7 MB in the beginning and 54.6 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1076.67 ms. Allocated memory was 77.6 MB in the beginning and 94.4 MB in the end (delta: 16.8 MB). Free memory was 52.3 MB in the beginning and 47.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 31.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 319.65 ms. Allocated memory is still 94.4 MB. Free memory was 47.6 MB in the beginning and 56.2 MB in the end (delta: -8.6 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 190.74 ms. Allocated memory is still 94.4 MB. Free memory was 56.2 MB in the beginning and 42.4 MB in the end (delta: 13.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4052.57 ms. Allocated memory was 94.4 MB in the beginning and 201.3 MB in the end (delta: 107.0 MB). Free memory was 42.4 MB in the beginning and 130.1 MB in the end (delta: -87.7 MB). Peak memory consumption was 85.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 4643.73 ms. Allocated memory was 201.3 MB in the beginning and 320.9 MB in the end (delta: 119.5 MB). Free memory was 130.1 MB in the beginning and 177.7 MB in the end (delta: -47.6 MB). Peak memory consumption was 72.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.96 ms. Allocated memory is still 320.9 MB. Free memory is still 177.7 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 4 terminating modules (2 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * op2 + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * splverifierCounter + 7 and consists of 4 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 2.6s. Construction of modules took 0.0s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 1016 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 533 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 5058 SDtfs, 4563 SDslu, 6677 SDs, 0 SdLazy, 26 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital38 mio100 ax100 hnf100 lsp29 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq189 hnf90 smp100 dnf134 smp100 tf108 neg92 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 42ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 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...