java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:10:24,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:10:24,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:10:24,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:10:24,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:10:24,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:10:24,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:10:24,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:10:24,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:10:24,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:10:24,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:10:24,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:10:24,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:10:24,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:10:24,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:10:24,413 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:10:24,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:10:24,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:10:24,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:10:24,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:10:24,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:10:24,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:10:24,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:10:24,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:10:24,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:10:24,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:10:24,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:10:24,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:10:24,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:10:24,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:10:24,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:10:24,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:10:24,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:10:24,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:10:24,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:10:24,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:10:24,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:10:24,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:10:24,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:10:24,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:10:24,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:10:24,439 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:10:24,465 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:10:24,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:10:24,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:10:24,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:10:24,471 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:10:24,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:10:24,471 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:10:24,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:10:24,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:10:24,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:10:24,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:10:24,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:10:24,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:10:24,473 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:10:24,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:10:24,473 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:10:24,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:10:24,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:10:24,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:10:24,475 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:10:24,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:10:24,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:10:24,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:10:24,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:10:24,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:10:24,476 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:10:24,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:10:24,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:10:24,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:10:24,777 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:10:24,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:10:24,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:10:24,799 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:10:24,799 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:10:24,800 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product24.cil.c [2019-10-13 23:10:24,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7312872/ffa7987f8d59405985ccab088d064586/FLAG43bb7a9d3 [2019-10-13 23:10:25,546 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:10:25,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product24.cil.c [2019-10-13 23:10:25,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7312872/ffa7987f8d59405985ccab088d064586/FLAG43bb7a9d3 [2019-10-13 23:10:25,699 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d7312872/ffa7987f8d59405985ccab088d064586 [2019-10-13 23:10:25,708 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:10:25,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:10:25,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:10:25,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:10:25,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:10:25,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:10:25" (1/1) ... [2019-10-13 23:10:25,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243eae36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:25, skipping insertion in model container [2019-10-13 23:10:25,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:10:25" (1/1) ... [2019-10-13 23:10:25,723 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:10:25,796 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:10:26,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:10:26,686 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:10:26,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:10:26,872 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:10:26,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:26 WrapperNode [2019-10-13 23:10:26,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:10:26,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:10:26,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:10:26,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:10:26,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:26" (1/1) ... [2019-10-13 23:10:26,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:26" (1/1) ... [2019-10-13 23:10:26,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:26" (1/1) ... [2019-10-13 23:10:26,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:26" (1/1) ... [2019-10-13 23:10:26,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:26" (1/1) ... [2019-10-13 23:10:27,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:26" (1/1) ... [2019-10-13 23:10:27,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:26" (1/1) ... [2019-10-13 23:10:27,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:10:27,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:10:27,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:10:27,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:10:27,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:10:27,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:10:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:10:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:10:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:10:27,152 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 23:10:27,153 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 23:10:27,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 23:10:27,153 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 23:10:27,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 23:10:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 23:10:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 23:10:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 23:10:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 23:10:27,154 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 23:10:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 23:10:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 23:10:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 23:10:27,155 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 23:10:27,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 23:10:27,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 23:10:27,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 23:10:27,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 23:10:27,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 23:10:27,157 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 23:10:27,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 23:10:27,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 23:10:27,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 23:10:27,158 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 23:10:27,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 23:10:27,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 23:10:27,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 23:10:27,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 23:10:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 23:10:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 23:10:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:10:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:10:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:10:27,159 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:10:27,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:10:27,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:10:27,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:10:27,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:10:27,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:10:27,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:10:27,161 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:10:27,161 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 23:10:27,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 23:10:27,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 23:10:27,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 23:10:27,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 23:10:27,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 23:10:27,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 23:10:27,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 23:10:27,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 23:10:27,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 23:10:27,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 23:10:27,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 23:10:27,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 23:10:27,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 23:10:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 23:10:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 23:10:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 23:10:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 23:10:27,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 23:10:27,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 23:10:27,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 23:10:27,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 23:10:27,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 23:10:27,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 23:10:27,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 23:10:27,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 23:10:27,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 23:10:27,166 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 23:10:27,166 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 23:10:27,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:10:27,167 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:10:27,167 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 23:10:27,167 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 23:10:27,167 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 23:10:27,167 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 23:10:27,168 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 23:10:27,168 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 23:10:27,168 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 23:10:27,169 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 23:10:27,169 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 23:10:27,169 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 23:10:27,169 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 23:10:27,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-13 23:10:27,170 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 23:10:27,170 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 23:10:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 23:10:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 23:10:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 23:10:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 23:10:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 23:10:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 23:10:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 23:10:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 23:10:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-13 23:10:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 23:10:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 23:10:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 23:10:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 23:10:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 23:10:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 23:10:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 23:10:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 23:10:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 23:10:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 23:10:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 23:10:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 23:10:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 23:10:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 23:10:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 23:10:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:10:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:10:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 23:10:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 23:10:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 23:10:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 23:10:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 23:10:27,177 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 23:10:27,177 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 23:10:27,177 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 23:10:27,178 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 23:10:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 23:10:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:10:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 23:10:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 23:10:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 23:10:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 23:10:27,180 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 23:10:27,180 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 23:10:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 23:10:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 23:10:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 23:10:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 23:10:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 23:10:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 23:10:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 23:10:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 23:10:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 23:10:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 23:10:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 23:10:27,193 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 23:10:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 23:10:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 23:10:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 23:10:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 23:10:27,194 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 23:10:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 23:10:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 23:10:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 23:10:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 23:10:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 23:10:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 23:10:27,195 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:10:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 23:10:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:10:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:10:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:10:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:10:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:10:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:10:27,196 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:10:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:10:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:10:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:10:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:10:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:10:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:10:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:10:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:10:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:10:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:10:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:10:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:10:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:10:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:10:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:10:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 23:10:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 23:10:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 23:10:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 23:10:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 23:10:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 23:10:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 23:10:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 23:10:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 23:10:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 23:10:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 23:10:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 23:10:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 23:10:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 23:10:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 23:10:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 23:10:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 23:10:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 23:10:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 23:10:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 23:10:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 23:10:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 23:10:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 23:10:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 23:10:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 23:10:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 23:10:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 23:10:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 23:10:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 23:10:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 23:10:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 23:10:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 23:10:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:10:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:10:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 23:10:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 23:10:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 23:10:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 23:10:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 23:10:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-13 23:10:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 23:10:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 23:10:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 23:10:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 23:10:27,205 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 23:10:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 23:10:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 23:10:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 23:10:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 23:10:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 23:10:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 23:10:27,206 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 23:10:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 23:10:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 23:10:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 23:10:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 23:10:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 23:10:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-13 23:10:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 23:10:27,207 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 23:10:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:10:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:10:27,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:10:31,660 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:10:31,660 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 23:10:31,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:10:31 BoogieIcfgContainer [2019-10-13 23:10:31,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:10:31,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:10:31,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:10:31,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:10:31,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:10:25" (1/3) ... [2019-10-13 23:10:31,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e52e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:10:31, skipping insertion in model container [2019-10-13 23:10:31,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:26" (2/3) ... [2019-10-13 23:10:31,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e52e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:10:31, skipping insertion in model container [2019-10-13 23:10:31,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:10:31" (3/3) ... [2019-10-13 23:10:31,671 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product24.cil.c [2019-10-13 23:10:31,681 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:10:31,691 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:10:31,703 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:10:31,733 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:10:31,733 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:10:31,733 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:10:31,733 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:10:31,734 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:10:31,734 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:10:31,734 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:10:31,734 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:10:31,764 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states. [2019-10-13 23:10:31,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:10:31,780 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:31,782 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:31,784 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:31,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:31,790 INFO L82 PathProgramCache]: Analyzing trace with hash -325070676, now seen corresponding path program 1 times [2019-10-13 23:10:31,801 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:31,801 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26762973] [2019-10-13 23:10:31,802 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:31,802 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:31,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:10:32,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26762973] [2019-10-13 23:10:32,407 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:32,407 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:10:32,407 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027999429] [2019-10-13 23:10:32,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:10:32,413 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:32,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:10:32,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:10:32,430 INFO L87 Difference]: Start difference. First operand 383 states. Second operand 2 states. [2019-10-13 23:10:32,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:32,499 INFO L93 Difference]: Finished difference Result 567 states and 662 transitions. [2019-10-13 23:10:32,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:10:32,500 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 118 [2019-10-13 23:10:32,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:32,520 INFO L225 Difference]: With dead ends: 567 [2019-10-13 23:10:32,521 INFO L226 Difference]: Without dead ends: 362 [2019-10-13 23:10:32,527 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:10:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2019-10-13 23:10:32,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2019-10-13 23:10:32,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2019-10-13 23:10:32,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 423 transitions. [2019-10-13 23:10:32,612 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 423 transitions. Word has length 118 [2019-10-13 23:10:32,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:32,615 INFO L462 AbstractCegarLoop]: Abstraction has 362 states and 423 transitions. [2019-10-13 23:10:32,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:10:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 423 transitions. [2019-10-13 23:10:32,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:10:32,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:32,620 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:32,620 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:32,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:32,621 INFO L82 PathProgramCache]: Analyzing trace with hash -25434280, now seen corresponding path program 1 times [2019-10-13 23:10:32,621 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:32,621 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207906248] [2019-10-13 23:10:32,622 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:32,622 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:32,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:10:32,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207906248] [2019-10-13 23:10:32,875 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:32,875 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:10:32,875 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258610192] [2019-10-13 23:10:32,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:10:32,880 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:32,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:10:32,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:10:32,881 INFO L87 Difference]: Start difference. First operand 362 states and 423 transitions. Second operand 3 states. [2019-10-13 23:10:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:32,946 INFO L93 Difference]: Finished difference Result 552 states and 634 transitions. [2019-10-13 23:10:32,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:10:32,947 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-13 23:10:32,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:32,952 INFO L225 Difference]: With dead ends: 552 [2019-10-13 23:10:32,952 INFO L226 Difference]: Without dead ends: 364 [2019-10-13 23:10:32,957 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:10:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2019-10-13 23:10:32,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2019-10-13 23:10:32,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2019-10-13 23:10:33,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 425 transitions. [2019-10-13 23:10:33,001 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 425 transitions. Word has length 119 [2019-10-13 23:10:33,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:33,002 INFO L462 AbstractCegarLoop]: Abstraction has 364 states and 425 transitions. [2019-10-13 23:10:33,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:10:33,002 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 425 transitions. [2019-10-13 23:10:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:10:33,006 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:33,006 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:33,006 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:33,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:33,007 INFO L82 PathProgramCache]: Analyzing trace with hash 658312226, now seen corresponding path program 1 times [2019-10-13 23:10:33,007 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:33,007 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302127794] [2019-10-13 23:10:33,007 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:33,007 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:33,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:10:33,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302127794] [2019-10-13 23:10:33,193 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:33,194 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:10:33,194 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415303786] [2019-10-13 23:10:33,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:10:33,195 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:33,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:10:33,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:10:33,195 INFO L87 Difference]: Start difference. First operand 364 states and 425 transitions. Second operand 3 states. [2019-10-13 23:10:33,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:33,270 INFO L93 Difference]: Finished difference Result 712 states and 860 transitions. [2019-10-13 23:10:33,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:10:33,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2019-10-13 23:10:33,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:33,279 INFO L225 Difference]: With dead ends: 712 [2019-10-13 23:10:33,280 INFO L226 Difference]: Without dead ends: 406 [2019-10-13 23:10:33,283 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:10:33,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2019-10-13 23:10:33,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 405. [2019-10-13 23:10:33,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2019-10-13 23:10:33,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 496 transitions. [2019-10-13 23:10:33,372 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 496 transitions. Word has length 131 [2019-10-13 23:10:33,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:33,374 INFO L462 AbstractCegarLoop]: Abstraction has 405 states and 496 transitions. [2019-10-13 23:10:33,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:10:33,374 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 496 transitions. [2019-10-13 23:10:33,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-13 23:10:33,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:33,382 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:33,383 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:33,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:33,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2006008639, now seen corresponding path program 1 times [2019-10-13 23:10:33,385 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:33,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711598562] [2019-10-13 23:10:33,385 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:33,386 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:33,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:10:33,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711598562] [2019-10-13 23:10:33,977 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:33,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 23:10:33,978 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981809889] [2019-10-13 23:10:33,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 23:10:33,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:33,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 23:10:33,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:10:33,983 INFO L87 Difference]: Start difference. First operand 405 states and 496 transitions. Second operand 19 states. [2019-10-13 23:10:42,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:42,191 INFO L93 Difference]: Finished difference Result 788 states and 927 transitions. [2019-10-13 23:10:42,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 23:10:42,192 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 132 [2019-10-13 23:10:42,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:42,202 INFO L225 Difference]: With dead ends: 788 [2019-10-13 23:10:42,202 INFO L226 Difference]: Without dead ends: 596 [2019-10-13 23:10:42,205 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 23:10:42,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2019-10-13 23:10:42,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 589. [2019-10-13 23:10:42,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-10-13 23:10:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 703 transitions. [2019-10-13 23:10:42,266 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 703 transitions. Word has length 132 [2019-10-13 23:10:42,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:42,269 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 703 transitions. [2019-10-13 23:10:42,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 23:10:42,269 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 703 transitions. [2019-10-13 23:10:42,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 23:10:42,275 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:42,276 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 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] [2019-10-13 23:10:42,276 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:42,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:42,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1907937512, now seen corresponding path program 1 times [2019-10-13 23:10:42,277 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:42,277 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796495218] [2019-10-13 23:10:42,278 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:42,278 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:42,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:10:42,821 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796495218] [2019-10-13 23:10:42,822 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:42,822 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2019-10-13 23:10:42,822 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571024626] [2019-10-13 23:10:42,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-13 23:10:42,823 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:42,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-13 23:10:42,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2019-10-13 23:10:42,824 INFO L87 Difference]: Start difference. First operand 589 states and 703 transitions. Second operand 21 states. [2019-10-13 23:10:44,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:44,264 INFO L93 Difference]: Finished difference Result 638 states and 754 transitions. [2019-10-13 23:10:44,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 23:10:44,264 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 138 [2019-10-13 23:10:44,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:44,271 INFO L225 Difference]: With dead ends: 638 [2019-10-13 23:10:44,271 INFO L226 Difference]: Without dead ends: 616 [2019-10-13 23:10:44,273 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=193, Invalid=1613, Unknown=0, NotChecked=0, Total=1806 [2019-10-13 23:10:44,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-13 23:10:44,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 611. [2019-10-13 23:10:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2019-10-13 23:10:44,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 723 transitions. [2019-10-13 23:10:44,329 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 723 transitions. Word has length 138 [2019-10-13 23:10:44,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:44,330 INFO L462 AbstractCegarLoop]: Abstraction has 611 states and 723 transitions. [2019-10-13 23:10:44,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-13 23:10:44,331 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 723 transitions. [2019-10-13 23:10:44,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-13 23:10:44,335 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:44,336 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2019-10-13 23:10:44,336 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:44,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:44,336 INFO L82 PathProgramCache]: Analyzing trace with hash -588842617, now seen corresponding path program 1 times [2019-10-13 23:10:44,337 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:44,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599410040] [2019-10-13 23:10:44,337 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:44,337 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:44,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 23:10:44,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599410040] [2019-10-13 23:10:44,583 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:44,583 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:10:44,583 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524702171] [2019-10-13 23:10:44,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:10:44,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:44,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:10:44,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:10:44,587 INFO L87 Difference]: Start difference. First operand 611 states and 723 transitions. Second operand 8 states. [2019-10-13 23:10:44,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:44,648 INFO L93 Difference]: Finished difference Result 890 states and 1018 transitions. [2019-10-13 23:10:44,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:10:44,649 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 227 [2019-10-13 23:10:44,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:44,653 INFO L225 Difference]: With dead ends: 890 [2019-10-13 23:10:44,653 INFO L226 Difference]: Without dead ends: 611 [2019-10-13 23:10:44,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:10:44,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2019-10-13 23:10:44,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2019-10-13 23:10:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2019-10-13 23:10:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 721 transitions. [2019-10-13 23:10:44,690 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 721 transitions. Word has length 227 [2019-10-13 23:10:44,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:44,691 INFO L462 AbstractCegarLoop]: Abstraction has 611 states and 721 transitions. [2019-10-13 23:10:44,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:10:44,691 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 721 transitions. [2019-10-13 23:10:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 23:10:44,695 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:44,696 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2019-10-13 23:10:44,696 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:44,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:44,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1875852175, now seen corresponding path program 1 times [2019-10-13 23:10:44,697 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:44,697 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102942038] [2019-10-13 23:10:44,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:44,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:44,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 23:10:45,042 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102942038] [2019-10-13 23:10:45,042 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:45,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 23:10:45,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411118356] [2019-10-13 23:10:45,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:10:45,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:45,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:10:45,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:10:45,045 INFO L87 Difference]: Start difference. First operand 611 states and 721 transitions. Second operand 11 states. [2019-10-13 23:10:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:47,629 INFO L93 Difference]: Finished difference Result 856 states and 973 transitions. [2019-10-13 23:10:47,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:10:47,630 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 232 [2019-10-13 23:10:47,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:47,635 INFO L225 Difference]: With dead ends: 856 [2019-10-13 23:10:47,635 INFO L226 Difference]: Without dead ends: 733 [2019-10-13 23:10:47,636 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:10:47,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2019-10-13 23:10:47,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 729. [2019-10-13 23:10:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 729 states. [2019-10-13 23:10:47,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 838 transitions. [2019-10-13 23:10:47,687 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 838 transitions. Word has length 232 [2019-10-13 23:10:47,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:47,688 INFO L462 AbstractCegarLoop]: Abstraction has 729 states and 838 transitions. [2019-10-13 23:10:47,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:10:47,688 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 838 transitions. [2019-10-13 23:10:47,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-13 23:10:47,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:47,694 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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] [2019-10-13 23:10:47,694 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:47,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:47,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1453698223, now seen corresponding path program 1 times [2019-10-13 23:10:47,695 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:47,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080425926] [2019-10-13 23:10:47,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:47,696 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:47,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:48,639 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 23:10:48,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080425926] [2019-10-13 23:10:48,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266782065] [2019-10-13 23:10:48,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:10:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:49,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:10:49,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:10:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-13 23:10:49,411 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:10:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 23:10:50,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1104611960] [2019-10-13 23:10:50,070 INFO L162 IcfgInterpreter]: Started Sifa with 201 locations of interest [2019-10-13 23:10:50,070 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:10:50,081 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:10:50,090 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:10:50,091 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs