./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/product-lines/email_spec0_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/product-lines/email_spec0_product31.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 20a00f7f23f152a501b19b994a48f1e12f43d997 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 15:47:06,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:47:06,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:47:06,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:47:06,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:47:06,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:47:06,220 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:47:06,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:47:06,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:47:06,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:47:06,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:47:06,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:47:06,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:47:06,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:47:06,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:47:06,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:47:06,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:47:06,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:47:06,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:47:06,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:47:06,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:47:06,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:47:06,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:47:06,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:47:06,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:47:06,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:47:06,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:47:06,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:47:06,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:47:06,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:47:06,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:47:06,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:47:06,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:47:06,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:47:06,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:47:06,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:47:06,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:47:06,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:47:06,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:47:06,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:47:06,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:47:06,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:47:06,308 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:47:06,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:47:06,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:47:06,309 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:47:06,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:47:06,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:47:06,312 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:47:06,312 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:47:06,312 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:47:06,312 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:47:06,313 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:47:06,313 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:47:06,313 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:47:06,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:47:06,314 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:47:06,314 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:47:06,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:47:06,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:47:06,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:47:06,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:47:06,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:47:06,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:47:06,327 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:47:06,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:47:06,327 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:47:06,328 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:47:06,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:47:06,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:47:06,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:47:06,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:47:06,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:47:06,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:47:06,330 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:47:06,330 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20a00f7f23f152a501b19b994a48f1e12f43d997 [2021-08-27 15:47:06,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:47:06,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:47:06,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:47:06,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:47:06,629 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:47:06,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec0_product31.cil.c [2021-08-27 15:47:06,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc9b1a02/6aac31285b17446eb2ac8d2b51d89aa4/FLAG06e3ed294 [2021-08-27 15:47:07,151 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:47:07,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product31.cil.c [2021-08-27 15:47:07,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc9b1a02/6aac31285b17446eb2ac8d2b51d89aa4/FLAG06e3ed294 [2021-08-27 15:47:07,453 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abc9b1a02/6aac31285b17446eb2ac8d2b51d89aa4 [2021-08-27 15:47:07,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:47:07,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:47:07,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:47:07,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:47:07,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:47:07,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:47:07" (1/1) ... [2021-08-27 15:47:07,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@241f209a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:07, skipping insertion in model container [2021-08-27 15:47:07,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:47:07" (1/1) ... [2021-08-27 15:47:07,475 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:47:07,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:47:07,948 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product31.cil.c[35608,35621] [2021-08-27 15:47:08,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:47:08,036 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:47:08,102 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec0_product31.cil.c[35608,35621] [2021-08-27 15:47:08,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:47:08,160 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:47:08,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:08 WrapperNode [2021-08-27 15:47:08,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:47:08,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:47:08,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:47:08,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:47:08,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:08" (1/1) ... [2021-08-27 15:47:08,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:08" (1/1) ... [2021-08-27 15:47:08,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:47:08,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:47:08,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:47:08,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:47:08,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:08" (1/1) ... [2021-08-27 15:47:08,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:08" (1/1) ... [2021-08-27 15:47:08,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:08" (1/1) ... [2021-08-27 15:47:08,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:08" (1/1) ... [2021-08-27 15:47:08,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:08" (1/1) ... [2021-08-27 15:47:08,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:08" (1/1) ... [2021-08-27 15:47:08,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:08" (1/1) ... [2021-08-27 15:47:08,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:47:08,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:47:08,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:47:08,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:47:08,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:08" (1/1) ... [2021-08-27 15:47:08,414 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:08,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:47:08,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:47:08,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-08-27 15:47:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-08-27 15:47:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:47:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:47:08,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:47:08,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:47:10,156 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:47:10,157 INFO L299 CfgBuilder]: Removed 379 assume(true) statements. [2021-08-27 15:47:10,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:47:10 BoogieIcfgContainer [2021-08-27 15:47:10,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:47:10,161 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:47:10,162 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:47:10,164 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:47:10,165 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:47:10,165 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:47:07" (1/3) ... [2021-08-27 15:47:10,166 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10341dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:47:10, skipping insertion in model container [2021-08-27 15:47:10,166 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:47:10,166 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:47:08" (2/3) ... [2021-08-27 15:47:10,166 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@10341dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:47:10, skipping insertion in model container [2021-08-27 15:47:10,166 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:47:10,166 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:47:10" (3/3) ... [2021-08-27 15:47:10,168 INFO L389 chiAutomizerObserver]: Analyzing ICFG email_spec0_product31.cil.c [2021-08-27 15:47:10,211 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:47:10,212 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:47:10,212 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:47:10,212 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:47:10,212 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:47:10,212 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:47:10,212 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:47:10,212 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:47:10,244 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 561 states, 560 states have (on average 1.7285714285714286) internal successors, (968), 560 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:47:10,286 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 212 [2021-08-27 15:47:10,287 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:47:10,287 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:47:10,294 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:47:10,294 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:47:10,294 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:47:10,296 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 561 states, 560 states have (on average 1.7285714285714286) internal successors, (968), 560 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:47:10,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 212 [2021-08-27 15:47:10,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:47:10,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:47:10,319 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:47:10,319 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-08-27 15:47:10,324 INFO L791 eck$LassoCheckResult]: Stem: 551#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(44);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(44);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(11);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(19);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string71.base, #t~string71.offset, 1);call write~init~int(100, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(10, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string74.base, #t~string74.offset, 1);call write~init~int(100, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(10, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(10);call #t~string87.base, #t~string87.offset := #Ultimate.allocOnStack(16);call #t~string96.base, #t~string96.offset := #Ultimate.allocOnStack(20);call #t~string99.base, #t~string99.offset := #Ultimate.allocOnStack(21);call #t~string107.base, #t~string107.offset := #Ultimate.allocOnStack(16);call #t~string114.base, #t~string114.offset := #Ultimate.allocOnStack(10);call #t~string117.base, #t~string117.offset := #Ultimate.allocOnStack(12);call #t~string120.base, #t~string120.offset := #Ultimate.allocOnStack(10);call #t~string123.base, #t~string123.offset := #Ultimate.allocOnStack(18);call #t~string126.base, #t~string126.offset := #Ultimate.allocOnStack(16);call #t~string129.base, #t~string129.offset := #Ultimate.allocOnStack(21);call #t~string132.base, #t~string132.offset := #Ultimate.allocOnStack(13);call #t~string135.base, #t~string135.offset := #Ultimate.allocOnStack(16);call #t~string138.base, #t~string138.offset := #Ultimate.allocOnStack(25);call #t~string142.base, #t~string142.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string142.base, #t~string142.offset, 1);call write~init~int(115, #t~string142.base, 1 + #t~string142.offset, 1);call write~init~int(10, #t~string142.base, 2 + #t~string142.offset, 1);call write~init~int(0, #t~string142.base, 3 + #t~string142.offset, 1);~__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;~head~0.base, ~head~0.offset := 0, 0;~__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;~queue_empty~0 := 1;~queued_message~0 := 0;~queued_client~0 := 0;~__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; 465#L-1true havoc main_#res;havoc main_#t~ret66, main_~retValue_acc~14, main_~tmp~5;havoc main_~retValue_acc~14;havoc main_~tmp~5; 186#L1751true havoc valid_product_#res;havoc valid_product_~retValue_acc~21;havoc valid_product_~retValue_acc~21;valid_product_~retValue_acc~21 := 1;valid_product_#res := valid_product_~retValue_acc~21; 270#L1759true main_#t~ret66 := valid_product_#res;main_~tmp~5 := main_#t~ret66;havoc main_#t~ret66; 82#L1215true assume 0 != main_~tmp~5;havoc setup_#t~nondet61, setup_#t~nondet63, setup_#t~nondet65, setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset, setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset, setup_~__cil_tmp3~2.base, setup_~__cil_tmp3~2.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_tmp3~2.base, setup_~__cil_tmp3~2.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; 71#L2823true assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 422#L2829-2true 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; 187#L2388true assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 321#L2394-2true setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset := #t~string60.base, #t~string60.offset;havoc setup_#t~nondet61;~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; 415#L2823-2true assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 508#L2829-5true 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; 106#L2388-2true assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 345#L2394-5true setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset := #t~string62.base, #t~string62.offset;havoc setup_#t~nondet63;~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; 410#L2823-4true assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 400#L2829-8true 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; 368#L2388-4true assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 117#L2394-8true setup_~__cil_tmp3~2.base, setup_~__cil_tmp3~2.offset := #t~string64.base, #t~string64.offset;havoc setup_#t~nondet65; 225#L1202true havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_#t~nondet50, test_#t~nondet51, test_#t~nondet52, 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~3, test_~tmp___0~0, test_~tmp___1~0, 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~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;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; 128#L1013-1true [2021-08-27 15:47:10,324 INFO L793 eck$LassoCheckResult]: Loop: 128#L1013-1true assume !false; 299#L868true assume test_~splverifierCounter~0 < 4; 60#L869true test_~splverifierCounter~0 := 1 + test_~splverifierCounter~0; 18#L875true assume !(0 == test_~op1~0); 26#L888true assume 0 == test_~op2~0;test_~tmp___8~0 := test_#t~nondet43;havoc test_#t~nondet43; 362#L893true assume 0 != test_~tmp___8~0;test_~op2~0 := 1; 128#L1013-1true [2021-08-27 15:47:10,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:47:10,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1291925977, now seen corresponding path program 1 times [2021-08-27 15:47:10,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:47:10,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515866523] [2021-08-27 15:47:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:47:10,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:47:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:47:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:47:10,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:47:10,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515866523] [2021-08-27 15:47:10,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515866523] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:47:10,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:47:10,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-27 15:47:10,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670070053] [2021-08-27 15:47:10,653 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 15:47:10,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:47:10,654 INFO L82 PathProgramCache]: Analyzing trace with hash 590492675, now seen corresponding path program 1 times [2021-08-27 15:47:10,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:47:10,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042703668] [2021-08-27 15:47:10,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:47:10,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:47:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:47:10,662 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:47:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:47:10,686 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:47:10,757 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:47:10,758 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:47:10,758 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:47:10,758 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:47:10,759 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:47:10,759 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:10,759 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:47:10,759 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:47:10,759 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec0_product31.cil.c_Iteration1_Loop [2021-08-27 15:47:10,759 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:47:10,759 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:47:10,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:10,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:10,789 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:10,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:10,863 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:47:10,864 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:47:10,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:10,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:47:10,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:47:10,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:47:10,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:47:10,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 15:47:10,905 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-08-27 15:47:10,905 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_test_#t~nondet43=7, ULTIMATE.start_test_~tmp___8~0=7} Honda state: {ULTIMATE.start_test_#t~nondet43=7, ULTIMATE.start_test_~tmp___8~0=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-08-27 15:47:10,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 15:47:10,934 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:10,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:47:10,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:47:10,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:47:10,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:47:10,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 15:47:10,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 15:47:10,986 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:10,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:47:10,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:47:10,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 15:47:10,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:47:10,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:47:11,008 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:47:11,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 15:47:11,029 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:47:11,030 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:47:11,030 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:47:11,030 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:47:11,030 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:47:11,030 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:11,030 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:47:11,030 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:47:11,030 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec0_product31.cil.c_Iteration1_Loop [2021-08-27 15:47:11,030 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:47:11,030 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:47:11,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:11,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:11,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:11,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:11,167 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:47:11,170 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:47:11,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:11,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:47:11,182 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:47:11,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 15:47:11,209 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:47:11,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:47:11,217 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:47:11,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:47:11,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:47:11,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:47:11,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:47:11,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:47:11,234 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:47:11,238 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:47:11,238 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:47:11,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:11,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:47:11,240 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:47:11,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-27 15:47:11,242 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:47:11,243 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:47:11,243 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:47:11,244 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_test_~op2~0) = -2*ULTIMATE.start_test_~op2~0 + 1 Supporting invariants [] [2021-08-27 15:47:11,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 15:47:11,273 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:47:11,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:47:11,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-08-27 15:47:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:47:11,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:47:11,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:47:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:47:11,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:47:11,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:47:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:47:11,639 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 [2021-08-27 15:47:11,641 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 561 states, 560 states have (on average 1.7285714285714286) internal successors, (968), 560 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:47:11,841 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 561 states, 560 states have (on average 1.7285714285714286) internal successors, (968), 560 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 2478 states and 4252 transitions. Complement of second has 7 states. [2021-08-27 15:47:11,841 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 [2021-08-27 15:47:11,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:47:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2418 transitions. [2021-08-27 15:47:11,848 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 2418 transitions. Stem has 18 letters. Loop has 6 letters. [2021-08-27 15:47:11,848 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:47:11,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 2418 transitions. Stem has 24 letters. Loop has 6 letters. [2021-08-27 15:47:11,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:47:11,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 2418 transitions. Stem has 18 letters. Loop has 12 letters. [2021-08-27 15:47:11,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:47:11,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2478 states and 4252 transitions. [2021-08-27 15:47:11,873 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 423 [2021-08-27 15:47:11,883 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2478 states to 879 states and 1596 transitions. [2021-08-27 15:47:11,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 454 [2021-08-27 15:47:11,890 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 455 [2021-08-27 15:47:11,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 879 states and 1596 transitions. [2021-08-27 15:47:11,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:47:11,891 INFO L681 BuchiCegarLoop]: Abstraction has 879 states and 1596 transitions. [2021-08-27 15:47:11,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states and 1596 transitions. [2021-08-27 15:47:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 456. [2021-08-27 15:47:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 456 states have (on average 1.8092105263157894) internal successors, (825), 455 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:47:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 825 transitions. [2021-08-27 15:47:11,954 INFO L704 BuchiCegarLoop]: Abstraction has 456 states and 825 transitions. [2021-08-27 15:47:11,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:47:11,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 15:47:11,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 15:47:11,959 INFO L87 Difference]: Start difference. First operand 456 states and 825 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:47:12,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:47:12,000 INFO L93 Difference]: Finished difference Result 892 states and 1615 transitions. [2021-08-27 15:47:12,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 15:47:12,001 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 892 states and 1615 transitions. [2021-08-27 15:47:12,007 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 424 [2021-08-27 15:47:12,013 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 892 states to 892 states and 1615 transitions. [2021-08-27 15:47:12,013 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 466 [2021-08-27 15:47:12,014 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 466 [2021-08-27 15:47:12,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 892 states and 1615 transitions. [2021-08-27 15:47:12,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-08-27 15:47:12,017 INFO L681 BuchiCegarLoop]: Abstraction has 892 states and 1615 transitions. [2021-08-27 15:47:12,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states and 1615 transitions. [2021-08-27 15:47:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 455. [2021-08-27 15:47:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 455 states have (on average 1.8043956043956044) internal successors, (821), 454 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:47:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 821 transitions. [2021-08-27 15:47:12,025 INFO L704 BuchiCegarLoop]: Abstraction has 455 states and 821 transitions. [2021-08-27 15:47:12,025 INFO L587 BuchiCegarLoop]: Abstraction has 455 states and 821 transitions. [2021-08-27 15:47:12,026 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:47:12,026 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 455 states and 821 transitions. [2021-08-27 15:47:12,028 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 212 [2021-08-27 15:47:12,028 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:47:12,028 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:47:12,029 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:47:12,029 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 15:47:12,030 INFO L791 eck$LassoCheckResult]: Stem: 4938#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~string25.base, #t~string25.offset := #Ultimate.allocOnStack(30);call #t~string26.base, #t~string26.offset := #Ultimate.allocOnStack(9);call #t~string27.base, #t~string27.offset := #Ultimate.allocOnStack(21);call #t~string28.base, #t~string28.offset := #Ultimate.allocOnStack(30);call #t~string29.base, #t~string29.offset := #Ultimate.allocOnStack(9);call #t~string30.base, #t~string30.offset := #Ultimate.allocOnStack(21);call #t~string34.base, #t~string34.offset := #Ultimate.allocOnStack(30);call #t~string35.base, #t~string35.offset := #Ultimate.allocOnStack(9);call #t~string36.base, #t~string36.offset := #Ultimate.allocOnStack(25);call #t~string37.base, #t~string37.offset := #Ultimate.allocOnStack(30);call #t~string38.base, #t~string38.offset := #Ultimate.allocOnStack(9);call #t~string39.base, #t~string39.offset := #Ultimate.allocOnStack(25);call #t~string53.base, #t~string53.offset := #Ultimate.allocOnStack(44);call #t~string58.base, #t~string58.offset := #Ultimate.allocOnStack(44);call #t~string60.base, #t~string60.offset := #Ultimate.allocOnStack(9);call #t~string62.base, #t~string62.offset := #Ultimate.allocOnStack(9);call #t~string64.base, #t~string64.offset := #Ultimate.allocOnStack(11);call #t~string68.base, #t~string68.offset := #Ultimate.allocOnStack(19);call #t~string71.base, #t~string71.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string71.base, #t~string71.offset, 1);call write~init~int(100, #t~string71.base, 1 + #t~string71.offset, 1);call write~init~int(10, #t~string71.base, 2 + #t~string71.offset, 1);call write~init~int(0, #t~string71.base, 3 + #t~string71.offset, 1);call #t~string74.base, #t~string74.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string74.base, #t~string74.offset, 1);call write~init~int(100, #t~string74.base, 1 + #t~string74.offset, 1);call write~init~int(10, #t~string74.base, 2 + #t~string74.offset, 1);call write~init~int(0, #t~string74.base, 3 + #t~string74.offset, 1);call #t~string81.base, #t~string81.offset := #Ultimate.allocOnStack(10);call #t~string87.base, #t~string87.offset := #Ultimate.allocOnStack(16);call #t~string96.base, #t~string96.offset := #Ultimate.allocOnStack(20);call #t~string99.base, #t~string99.offset := #Ultimate.allocOnStack(21);call #t~string107.base, #t~string107.offset := #Ultimate.allocOnStack(16);call #t~string114.base, #t~string114.offset := #Ultimate.allocOnStack(10);call #t~string117.base, #t~string117.offset := #Ultimate.allocOnStack(12);call #t~string120.base, #t~string120.offset := #Ultimate.allocOnStack(10);call #t~string123.base, #t~string123.offset := #Ultimate.allocOnStack(18);call #t~string126.base, #t~string126.offset := #Ultimate.allocOnStack(16);call #t~string129.base, #t~string129.offset := #Ultimate.allocOnStack(21);call #t~string132.base, #t~string132.offset := #Ultimate.allocOnStack(13);call #t~string135.base, #t~string135.offset := #Ultimate.allocOnStack(16);call #t~string138.base, #t~string138.offset := #Ultimate.allocOnStack(25);call #t~string142.base, #t~string142.offset := #Ultimate.allocOnStack(4);call write~init~int(37, #t~string142.base, #t~string142.offset, 1);call write~init~int(115, #t~string142.base, 1 + #t~string142.offset, 1);call write~init~int(10, #t~string142.base, 2 + #t~string142.offset, 1);call write~init~int(0, #t~string142.base, 3 + #t~string142.offset, 1);~__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;~head~0.base, ~head~0.offset := 0, 0;~__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;~queue_empty~0 := 1;~queued_message~0 := 0;~queued_client~0 := 0;~__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; 4886#L-1 havoc main_#res;havoc main_#t~ret66, main_~retValue_acc~14, main_~tmp~5;havoc main_~retValue_acc~14;havoc main_~tmp~5; 4887#L1751 havoc valid_product_#res;havoc valid_product_~retValue_acc~21;havoc valid_product_~retValue_acc~21;valid_product_~retValue_acc~21 := 1;valid_product_#res := valid_product_~retValue_acc~21; 4890#L1759 main_#t~ret66 := valid_product_#res;main_~tmp~5 := main_#t~ret66;havoc main_#t~ret66; 4729#L1215 assume 0 != main_~tmp~5;havoc setup_#t~nondet61, setup_#t~nondet63, setup_#t~nondet65, setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset, setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset, setup_~__cil_tmp3~2.base, setup_~__cil_tmp3~2.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_tmp3~2.base, setup_~__cil_tmp3~2.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; 4714#L2823 assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 4715#L2829-2 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; 4845#L2388 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 4636#L2394-2 setup_~__cil_tmp1~0.base, setup_~__cil_tmp1~0.offset := #t~string60.base, #t~string60.offset;havoc setup_#t~nondet61;~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; 4637#L2823-2 assume !(1 == setClientId_~handle); 4837#L2826-2 assume 2 == setClientId_~handle;~__ste_client_idCounter1~0 := setClientId_~value; 4927#L2829-5 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; 4789#L2388-2 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 4717#L2394-5 setup_~__cil_tmp2~0.base, setup_~__cil_tmp2~0.offset := #t~string62.base, #t~string62.offset;havoc setup_#t~nondet63;~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; 4718#L2823-4 assume 1 == setClientId_~handle;~__ste_client_idCounter0~0 := setClientId_~value; 4812#L2829-8 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; 4741#L2388-4 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 4742#L2394-8 setup_~__cil_tmp3~2.base, setup_~__cil_tmp3~2.offset := #t~string64.base, #t~string64.offset;havoc setup_#t~nondet65; 4811#L1202 havoc test_#t~nondet42, test_#t~nondet43, test_#t~nondet44, test_#t~nondet45, test_#t~nondet46, test_#t~nondet47, test_#t~nondet48, test_#t~nondet49, test_#t~nondet50, test_#t~nondet51, test_#t~nondet52, 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~3, test_~tmp___0~0, test_~tmp___1~0, 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~3;havoc test_~tmp___0~0;havoc test_~tmp___1~0;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; 4916#L1013-1 assume !false; 4576#L868 [2021-08-27 15:47:12,030 INFO L793 eck$LassoCheckResult]: Loop: 4576#L868 assume test_~splverifierCounter~0 < 4; 4577#L869 test_~splverifierCounter~0 := 1 + test_~splverifierCounter~0; 4528#L875 assume !(0 == test_~op1~0); 4530#L888 assume !(0 == test_~op2~0); 4542#L899 assume 0 == test_~op3~0;test_~tmp___7~0 := test_#t~nondet44;havoc test_#t~nondet44; 4868#L904 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; 4721#L2388-6 assume 1 == setClientPrivateKey_~handle;~__ste_client_privateKey0~0 := setClientPrivateKey_~value; 4606#L2394-11 test_~op3~0 := 1; 4547#L1013-1 assume !false; 4576#L868 [2021-08-27 15:47:12,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:47:12,031 INFO L82 PathProgramCache]: Analyzing trace with hash -953559564, now seen corresponding path program 1 times [2021-08-27 15:47:12,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:47:12,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759543928] [2021-08-27 15:47:12,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:47:12,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:47:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:47:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:47:12,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-27 15:47:12,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759543928] [2021-08-27 15:47:12,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759543928] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-27 15:47:12,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-27 15:47:12,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-27 15:47:12,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663945068] [2021-08-27 15:47:12,114 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-08-27 15:47:12,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:47:12,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1296812605, now seen corresponding path program 1 times [2021-08-27 15:47:12,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:47:12,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506223190] [2021-08-27 15:47:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:47:12,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:47:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:47:12,121 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:47:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:47:12,132 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:47:12,247 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:47:12,247 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:47:12,247 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:47:12,247 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:47:12,247 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:47:12,247 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:12,247 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:47:12,248 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:47:12,248 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec0_product31.cil.c_Iteration2_Loop [2021-08-27 15:47:12,248 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:47:12,248 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:47:12,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,407 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:47:12,408 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:47:12,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:12,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:47:12,409 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:47:12,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:47:12,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:47:12,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-27 15:47:12,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-27 15:47:12,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:12,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:47:12,457 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:47:12,459 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:47:12,459 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:47:12,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-08-27 15:47:12,509 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:47:12,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-08-27 15:47:12,515 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:47:12,515 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:47:12,515 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:47:12,515 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:47:12,516 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:47:12,516 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:12,516 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:47:12,516 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:47:12,516 INFO L133 ssoRankerPreferences]: Filename of dumped script: email_spec0_product31.cil.c_Iteration2_Loop [2021-08-27 15:47:12,516 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:47:12,516 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:47:12,517 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,539 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:47:12,689 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:47:12,689 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:47:12,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:12,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:47:12,693 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:47:12,708 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:47:12,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:47:12,716 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:47:12,716 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:47:12,716 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:47:12,716 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:47:12,717 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:47:12,717 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:47:12,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-08-27 15:47:12,728 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:47:12,742 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-08-27 15:47:12,742 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-08-27 15:47:12,742 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:47:12,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:47:12,743 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-08-27 15:47:12,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-08-27 15:47:12,748 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:47:12,748 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:47:12,748 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:47:12,748 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_test_~splverifierCounter~0) = -2*ULTIMATE.start_test_~splverifierCounter~0 + 7 Supporting invariants [] [2021-08-27 15:47:12,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-08-27 15:47:12,771 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:47:12,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:47:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:47:12,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:47:12,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:47:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:47:13,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 15:47:13,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:47:13,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-08-27 15:47:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:47:13,167 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 [2021-08-27 15:47:13,168 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 455 states and 821 transitions. cyclomatic complexity: 368 Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:47:13,189 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 455 states and 821 transitions. cyclomatic complexity: 368. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 883 states and 1601 transitions. Complement of second has 6 states. [2021-08-27 15:47:13,190 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 [2021-08-27 15:47:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:47:13,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 433 transitions. [2021-08-27 15:47:13,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 433 transitions. Stem has 20 letters. Loop has 9 letters. [2021-08-27 15:47:13,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:47:13,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 433 transitions. Stem has 29 letters. Loop has 9 letters. [2021-08-27 15:47:13,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:47:13,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 433 transitions. Stem has 20 letters. Loop has 18 letters. [2021-08-27 15:47:13,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:47:13,193 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 883 states and 1601 transitions. [2021-08-27 15:47:13,199 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:47:13,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 883 states to 0 states and 0 transitions. [2021-08-27 15:47:13,199 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 15:47:13,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 15:47:13,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 15:47:13,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:47:13,200 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:47:13,200 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:47:13,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-27 15:47:13,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 15:47:13,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 15:47:13,201 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-27 15:47:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 15:47:13,201 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-08-27 15:47:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-27 15:47:13,202 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-08-27 15:47:13,202 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:47:13,202 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-08-27 15:47:13,202 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 15:47:13,202 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 15:47:13,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 15:47:13,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:47:13,203 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:47:13,203 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:47:13,203 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:47:13,203 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-08-27 15:47:13,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 15:47:13,203 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:47:13,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 15:47:13,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:47:13 BoogieIcfgContainer [2021-08-27 15:47:13,208 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:47:13,209 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:47:13,209 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:47:13,209 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:47:13,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:47:10" (3/4) ... [2021-08-27 15:47:13,212 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 15:47:13,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:47:13,213 INFO L168 Benchmark]: Toolchain (without parser) took 5751.54 ms. Allocated memory was 71.3 MB in the beginning and 180.4 MB in the end (delta: 109.1 MB). Free memory was 53.5 MB in the beginning and 117.8 MB in the end (delta: -64.4 MB). Peak memory consumption was 45.0 MB. Max. memory is 16.1 GB. [2021-08-27 15:47:13,214 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 71.3 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:47:13,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.09 ms. Allocated memory is still 71.3 MB. Free memory was 53.3 MB in the beginning and 31.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-08-27 15:47:13,215 INFO L168 Benchmark]: Boogie Procedure Inliner took 113.11 ms. Allocated memory is still 71.3 MB. Free memory was 31.0 MB in the beginning and 43.0 MB in the end (delta: -12.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2021-08-27 15:47:13,215 INFO L168 Benchmark]: Boogie Preprocessor took 123.61 ms. Allocated memory is still 71.3 MB. Free memory was 43.0 MB in the beginning and 35.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-08-27 15:47:13,216 INFO L168 Benchmark]: RCFGBuilder took 1760.57 ms. Allocated memory was 71.3 MB in the beginning and 109.1 MB in the end (delta: 37.7 MB). Free memory was 35.1 MB in the beginning and 75.5 MB in the end (delta: -40.5 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. [2021-08-27 15:47:13,217 INFO L168 Benchmark]: BuchiAutomizer took 3046.81 ms. Allocated memory was 109.1 MB in the beginning and 180.4 MB in the end (delta: 71.3 MB). Free memory was 75.5 MB in the beginning and 117.8 MB in the end (delta: -42.3 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. [2021-08-27 15:47:13,217 INFO L168 Benchmark]: Witness Printer took 3.32 ms. Allocated memory is still 180.4 MB. Free memory is still 117.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:47:13,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 71.3 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 697.09 ms. Allocated memory is still 71.3 MB. Free memory was 53.3 MB in the beginning and 31.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 113.11 ms. Allocated memory is still 71.3 MB. Free memory was 31.0 MB in the beginning and 43.0 MB in the end (delta: -12.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 123.61 ms. Allocated memory is still 71.3 MB. Free memory was 43.0 MB in the beginning and 35.4 MB in the end (delta: 7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1760.57 ms. Allocated memory was 71.3 MB in the beginning and 109.1 MB in the end (delta: 37.7 MB). Free memory was 35.1 MB in the beginning and 75.5 MB in the end (delta: -40.5 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3046.81 ms. Allocated memory was 109.1 MB in the beginning and 180.4 MB in the end (delta: 71.3 MB). Free memory was 75.5 MB in the beginning and 117.8 MB in the end (delta: -42.3 MB). Peak memory consumption was 29.7 MB. Max. memory is 16.1 GB. * Witness Printer took 3.32 ms. Allocated memory is still 180.4 MB. Free memory is still 117.8 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 7 + -2 * splverifierCounter 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 3.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.7s. Construction of modules took 0.0s. Büchi inclusion checks took 1.0s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 61.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 860 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 455 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 3139 SDtfs, 2719 SDslu, 3911 SDs, 0 SdLazy, 26 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.8ms 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: 72ms 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! [2021-08-27 15:47:13,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...