./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d51a9662ec11e877bdc62fbff8cdf19fcc101bb2b0234c411e7900fe51bd7f38 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:06:04,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:06:04,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:06:04,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:06:04,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:06:04,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:06:04,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:06:04,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:06:04,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:06:04,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:06:04,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:06:04,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:06:04,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:06:04,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:06:04,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:06:04,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:06:04,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:06:04,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:06:04,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:06:04,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:06:04,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:06:04,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:06:04,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:06:04,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:06:04,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:06:04,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:06:04,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:06:04,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:06:04,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:06:04,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:06:04,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:06:04,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:06:04,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:06:04,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:06:04,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:06:04,519 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:06:04,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:06:04,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:06:04,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:06:04,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:06:04,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:06:04,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:06:04,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:06:04,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:06:04,545 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:06:04,545 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:06:04,546 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:06:04,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:06:04,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:06:04,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:06:04,548 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:06:04,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:06:04,549 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:06:04,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:06:04,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:06:04,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:06:04,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:06:04,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:06:04,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:06:04,550 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:06:04,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:06:04,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:06:04,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:06:04,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:06:04,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:06:04,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:06:04,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:06:04,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:06:04,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:06:04,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:06:04,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:06:04,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:06:04,552 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:06:04,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:06:04,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:06:04,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:06:04,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d51a9662ec11e877bdc62fbff8cdf19fcc101bb2b0234c411e7900fe51bd7f38 [2021-12-15 11:06:04,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:06:04,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:06:04,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:06:04,832 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:06:04,833 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:06:04,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2021-12-15 11:06:04,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f55f3c96/f2b11fc039844526b1d7172cdb8165d8/FLAG7b4b01b86 [2021-12-15 11:06:05,474 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:06:05,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2021-12-15 11:06:05,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f55f3c96/f2b11fc039844526b1d7172cdb8165d8/FLAG7b4b01b86 [2021-12-15 11:06:05,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f55f3c96/f2b11fc039844526b1d7172cdb8165d8 [2021-12-15 11:06:05,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:06:05,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:06:05,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:06:05,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:06:05,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:06:05,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:06:05" (1/1) ... [2021-12-15 11:06:05,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29454749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:05, skipping insertion in model container [2021-12-15 11:06:05,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:06:05" (1/1) ... [2021-12-15 11:06:05,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:06:05,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:06:06,230 WARN L230 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_spec27_product31.cil.c[61351,61364] [2021-12-15 11:06:06,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:06:06,249 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:06:06,321 WARN L230 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_spec27_product31.cil.c[61351,61364] [2021-12-15 11:06:06,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:06:06,349 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:06:06,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06 WrapperNode [2021-12-15 11:06:06,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:06:06,355 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:06:06,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:06:06,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:06:06,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2021-12-15 11:06:06,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2021-12-15 11:06:06,449 INFO L137 Inliner]: procedures = 131, calls = 219, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 1010 [2021-12-15 11:06:06,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:06:06,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:06:06,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:06:06,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:06:06,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2021-12-15 11:06:06,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2021-12-15 11:06:06,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2021-12-15 11:06:06,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2021-12-15 11:06:06,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2021-12-15 11:06:06,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2021-12-15 11:06:06,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2021-12-15 11:06:06,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:06:06,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:06:06,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:06:06,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:06:06,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (1/1) ... [2021-12-15 11:06:06,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:06:06,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:06:06,609 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:06:06,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:06:06,648 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-15 11:06:06,648 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-15 11:06:06,649 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-15 11:06:06,649 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-15 11:06:06,649 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-15 11:06:06,649 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-15 11:06:06,649 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-15 11:06:06,650 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-15 11:06:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-15 11:06:06,651 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-15 11:06:06,651 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-15 11:06:06,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-15 11:06:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-15 11:06:06,652 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-15 11:06:06,652 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-15 11:06:06,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-15 11:06:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-15 11:06:06,653 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-15 11:06:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-15 11:06:06,653 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-15 11:06:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-15 11:06:06,653 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-15 11:06:06,654 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-15 11:06:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-15 11:06:06,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-15 11:06:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:06:06,654 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-15 11:06:06,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-15 11:06:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-15 11:06:06,655 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-15 11:06:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-15 11:06:06,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-15 11:06:06,655 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-15 11:06:06,656 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-15 11:06:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-15 11:06:06,657 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-15 11:06:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-15 11:06:06,657 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-15 11:06:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-15 11:06:06,658 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-15 11:06:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-15 11:06:06,658 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-15 11:06:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-15 11:06:06,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-15 11:06:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-15 11:06:06,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-15 11:06:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-15 11:06:06,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-15 11:06:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:06:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-15 11:06:06,660 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-15 11:06:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:06:06,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:06:06,934 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:06:06,937 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:06:07,630 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:06:07,641 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:06:07,642 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:06:07,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:06:07 BoogieIcfgContainer [2021-12-15 11:06:07,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:06:07,666 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:06:07,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:06:07,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:06:07,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:06:05" (1/3) ... [2021-12-15 11:06:07,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5ee7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:06:07, skipping insertion in model container [2021-12-15 11:06:07,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:06" (2/3) ... [2021-12-15 11:06:07,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5ee7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:06:07, skipping insertion in model container [2021-12-15 11:06:07,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:06:07" (3/3) ... [2021-12-15 11:06:07,673 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product31.cil.c [2021-12-15 11:06:07,677 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:06:07,678 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:06:07,726 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:06:07,731 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:06:07,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:06:07,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 375 states, 288 states have (on average 1.4965277777777777) internal successors, (431), 292 states have internal predecessors, (431), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-12-15 11:06:07,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-15 11:06:07,773 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:06:07,774 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:06:07,774 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:06:07,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:06:07,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1583649315, now seen corresponding path program 1 times [2021-12-15 11:06:07,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:06:07,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123381245] [2021-12-15 11:06:07,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:06:07,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:06:07,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:06:07,843 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:06:07,855 INFO L158 Benchmark]: Toolchain (without parser) took 2119.48ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 67.4MB in the beginning and 77.9MB in the end (delta: -10.5MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2021-12-15 11:06:07,856 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:06:07,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 616.53ms. Allocated memory is still 98.6MB. Free memory was 67.2MB in the beginning and 49.7MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-15 11:06:07,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.10ms. Allocated memory is still 98.6MB. Free memory was 49.2MB in the beginning and 43.4MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 11:06:07,859 INFO L158 Benchmark]: Boogie Preprocessor took 89.10ms. Allocated memory is still 98.6MB. Free memory was 43.4MB in the beginning and 39.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 11:06:07,860 INFO L158 Benchmark]: RCFGBuilder took 1104.41ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 39.2MB in the beginning and 44.9MB in the end (delta: -5.7MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2021-12-15 11:06:07,865 INFO L158 Benchmark]: TraceAbstraction took 186.27ms. Allocated memory is still 119.5MB. Free memory was 90.5MB in the beginning and 77.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 11:06:07,871 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 98.6MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 616.53ms. Allocated memory is still 98.6MB. Free memory was 67.2MB in the beginning and 49.7MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.10ms. Allocated memory is still 98.6MB. Free memory was 49.2MB in the beginning and 43.4MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.10ms. Allocated memory is still 98.6MB. Free memory was 43.4MB in the beginning and 39.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1104.41ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 39.2MB in the beginning and 44.9MB in the end (delta: -5.7MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * TraceAbstraction took 186.27ms. Allocated memory is still 119.5MB. Free memory was 90.5MB in the beginning and 77.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:06:07,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d51a9662ec11e877bdc62fbff8cdf19fcc101bb2b0234c411e7900fe51bd7f38 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:06:09,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:06:09,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:06:09,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:06:09,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:06:09,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:06:09,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:06:09,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:06:09,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:06:09,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:06:09,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:06:09,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:06:09,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:06:09,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:06:09,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:06:09,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:06:09,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:06:09,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:06:09,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:06:09,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:06:09,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:06:09,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:06:09,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:06:09,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:06:09,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:06:09,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:06:09,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:06:09,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:06:09,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:06:09,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:06:09,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:06:09,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:06:09,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:06:09,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:06:09,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:06:09,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:06:09,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:06:09,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:06:09,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:06:09,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:06:09,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:06:09,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 11:06:09,994 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:06:09,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:06:09,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:06:09,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:06:09,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:06:09,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:06:09,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:06:09,998 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:06:09,999 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:06:09,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:06:10,000 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:06:10,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:06:10,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:06:10,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:06:10,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:06:10,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:06:10,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 11:06:10,001 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 11:06:10,001 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 11:06:10,001 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:06:10,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:06:10,002 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:06:10,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:06:10,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:06:10,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:06:10,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:06:10,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:06:10,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:06:10,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:06:10,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:06:10,003 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 11:06:10,003 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 11:06:10,004 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:06:10,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:06:10,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:06:10,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:06:10,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 11:06:10,005 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d51a9662ec11e877bdc62fbff8cdf19fcc101bb2b0234c411e7900fe51bd7f38 [2021-12-15 11:06:10,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:06:10,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:06:10,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:06:10,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:06:10,306 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:06:10,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2021-12-15 11:06:10,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77dafb92c/c3f2721e84a441d58c13c50d61349e5f/FLAG2f1cac7bd [2021-12-15 11:06:10,996 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:06:10,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2021-12-15 11:06:11,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77dafb92c/c3f2721e84a441d58c13c50d61349e5f/FLAG2f1cac7bd [2021-12-15 11:06:11,351 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77dafb92c/c3f2721e84a441d58c13c50d61349e5f [2021-12-15 11:06:11,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:06:11,355 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:06:11,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:06:11,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:06:11,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:06:11,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:06:11" (1/1) ... [2021-12-15 11:06:11,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301de979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:11, skipping insertion in model container [2021-12-15 11:06:11,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:06:11" (1/1) ... [2021-12-15 11:06:11,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:06:11,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:06:11,883 WARN L230 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_spec27_product31.cil.c[61351,61364] [2021-12-15 11:06:11,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:06:11,912 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 11:06:11,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:06:12,010 WARN L230 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_spec27_product31.cil.c[61351,61364] [2021-12-15 11:06:12,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:06:12,019 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:06:12,074 WARN L230 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_spec27_product31.cil.c[61351,61364] [2021-12-15 11:06:12,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:06:12,124 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:06:12,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:12 WrapperNode [2021-12-15 11:06:12,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:06:12,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:06:12,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:06:12,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:06:12,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:12" (1/1) ... [2021-12-15 11:06:12,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:12" (1/1) ... [2021-12-15 11:06:12,198 INFO L137 Inliner]: procedures = 133, calls = 219, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 952 [2021-12-15 11:06:12,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:06:12,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:06:12,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:06:12,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:06:12,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:12" (1/1) ... [2021-12-15 11:06:12,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:12" (1/1) ... [2021-12-15 11:06:12,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:12" (1/1) ... [2021-12-15 11:06:12,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:12" (1/1) ... [2021-12-15 11:06:12,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:12" (1/1) ... [2021-12-15 11:06:12,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:12" (1/1) ... [2021-12-15 11:06:12,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:12" (1/1) ... [2021-12-15 11:06:12,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:06:12,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:06:12,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:06:12,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:06:12,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:12" (1/1) ... [2021-12-15 11:06:12,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:06:12,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:06:12,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 11:06:12,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 11:06:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-15 11:06:12,340 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-15 11:06:12,340 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-15 11:06:12,340 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-15 11:06:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-15 11:06:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-15 11:06:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-15 11:06:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-15 11:06:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-15 11:06:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-15 11:06:12,341 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-15 11:06:12,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-15 11:06:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-15 11:06:12,342 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-15 11:06:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-15 11:06:12,342 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-15 11:06:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-15 11:06:12,342 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-15 11:06:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-15 11:06:12,342 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-15 11:06:12,342 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-15 11:06:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-15 11:06:12,343 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-15 11:06:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-15 11:06:12,343 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-15 11:06:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:06:12,343 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-15 11:06:12,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-15 11:06:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-15 11:06:12,344 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-15 11:06:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-15 11:06:12,344 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-15 11:06:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-15 11:06:12,344 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-15 11:06:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-15 11:06:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-15 11:06:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-15 11:06:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-15 11:06:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 11:06:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-15 11:06:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-15 11:06:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-15 11:06:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-15 11:06:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-15 11:06:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-15 11:06:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-15 11:06:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-15 11:06:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-15 11:06:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-15 11:06:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-15 11:06:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-15 11:06:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:06:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:06:12,577 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:06:12,579 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:06:13,389 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:06:13,408 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:06:13,409 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:06:13,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:06:13 BoogieIcfgContainer [2021-12-15 11:06:13,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:06:13,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:06:13,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:06:13,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:06:13,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:06:11" (1/3) ... [2021-12-15 11:06:13,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b779fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:06:13, skipping insertion in model container [2021-12-15 11:06:13,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:06:12" (2/3) ... [2021-12-15 11:06:13,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b779fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:06:13, skipping insertion in model container [2021-12-15 11:06:13,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:06:13" (3/3) ... [2021-12-15 11:06:13,419 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product31.cil.c [2021-12-15 11:06:13,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:06:13,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 11:06:13,470 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:06:13,475 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:06:13,476 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 11:06:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 375 states, 288 states have (on average 1.4965277777777777) internal successors, (431), 292 states have internal predecessors, (431), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-12-15 11:06:13,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-15 11:06:13,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:06:13,538 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:06:13,539 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:06:13,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:06:13,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1583649315, now seen corresponding path program 1 times [2021-12-15 11:06:13,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 11:06:13,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402488318] [2021-12-15 11:06:13,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:06:13,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 11:06:13,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 11:06:13,573 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 11:06:13,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 11:06:13,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 11:06:13,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 11:06:13,923 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 11:06:13,928 INFO L158 Benchmark]: Toolchain (without parser) took 2572.01ms. Allocated memory was 60.8MB in the beginning and 92.3MB in the end (delta: 31.5MB). Free memory was 36.6MB in the beginning and 50.9MB in the end (delta: -14.3MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2021-12-15 11:06:13,929 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 60.8MB. Free memory was 42.8MB in the beginning and 42.8MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:06:13,929 INFO L158 Benchmark]: CACSL2BoogieTranslator took 766.45ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 36.5MB in the beginning and 48.9MB in the end (delta: -12.5MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2021-12-15 11:06:13,930 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.02ms. Allocated memory is still 73.4MB. Free memory was 48.9MB in the beginning and 43.1MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-15 11:06:13,931 INFO L158 Benchmark]: Boogie Preprocessor took 57.35ms. Allocated memory is still 73.4MB. Free memory was 43.1MB in the beginning and 38.6MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 11:06:13,932 INFO L158 Benchmark]: RCFGBuilder took 1150.02ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 38.6MB in the beginning and 42.2MB in the end (delta: -3.6MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2021-12-15 11:06:13,933 INFO L158 Benchmark]: TraceAbstraction took 513.09ms. Allocated memory is still 92.3MB. Free memory was 41.7MB in the beginning and 50.9MB in the end (delta: -9.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 11:06:13,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 60.8MB. Free memory was 42.8MB in the beginning and 42.8MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 766.45ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 36.5MB in the beginning and 48.9MB in the end (delta: -12.5MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.02ms. Allocated memory is still 73.4MB. Free memory was 48.9MB in the beginning and 43.1MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.35ms. Allocated memory is still 73.4MB. Free memory was 43.1MB in the beginning and 38.6MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1150.02ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 38.6MB in the beginning and 42.2MB in the end (delta: -3.6MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * TraceAbstraction took 513.09ms. Allocated memory is still 92.3MB. Free memory was 41.7MB in the beginning and 50.9MB in the end (delta: -9.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 11:06:13,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable