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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec0_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 17:07:26,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 17:07:26,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 17:07:26,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-16 17:07:26,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-16 17:07:26,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-16 17:07:26,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-16 17:07:26,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-16 17:07:26,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-16 17:07:26,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-16 17:07:26,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-16 17:07:26,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-16 17:07:26,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 17:07:26,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 17:07:26,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 17:07:26,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 17:07:26,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 17:07:26,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 17:07:26,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 17:07:26,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 17:07:26,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 17:07:26,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 17:07:26,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 17:07:26,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 17:07:26,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-16 17:07:26,406 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-16 17:07:26,406 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-16 17:07:26,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-16 17:07:26,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-16 17:07:26,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-16 17:07:26,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-16 17:07:26,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-16 17:07:26,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-16 17:07:26,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-16 17:07:26,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-16 17:07:26,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-16 17:07:26,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-16 17:07:26,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-16 17:07:26,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 17:07:26,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 17:07:26,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 17:07:26,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-16 17:07:26,431 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 17:07:26,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 17:07:26,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-16 17:07:26,432 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-16 17:07:26,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-16 17:07:26,433 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-16 17:07:26,433 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-16 17:07:26,433 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-16 17:07:26,433 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-16 17:07:26,433 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-16 17:07:26,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 17:07:26,434 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 17:07:26,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 17:07:26,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 17:07:26,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 17:07:26,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 17:07:26,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 17:07:26,435 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 17:07:26,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 17:07:26,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 17:07:26,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 17:07:26,436 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-16 17:07:26,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 17:07:26,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 17:07:26,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 17:07:26,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 17:07:26,437 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-16 17:07:26,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 17:07:26,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 17:07:26,438 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-16 17:07:26,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 17:07:26,485 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 17:07:26,489 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 17:07:26,490 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 17:07:26,491 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 17:07:26,492 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product36.cil.c [2019-09-16 17:07:26,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cb56e0b/5a15dd9f5c5c4370a02a024c7ee75f18/FLAG29b4e6a99 [2019-09-16 17:07:27,148 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 17:07:27,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product36.cil.c [2019-09-16 17:07:27,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cb56e0b/5a15dd9f5c5c4370a02a024c7ee75f18/FLAG29b4e6a99 [2019-09-16 17:07:27,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9cb56e0b/5a15dd9f5c5c4370a02a024c7ee75f18 [2019-09-16 17:07:27,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 17:07:27,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 17:07:27,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:27,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 17:07:27,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 17:07:27,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:27" (1/1) ... [2019-09-16 17:07:27,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566a5914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:27, skipping insertion in model container [2019-09-16 17:07:27,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 05:07:27" (1/1) ... [2019-09-16 17:07:27,477 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 17:07:27,540 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 17:07:28,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:28,175 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 17:07:28,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 17:07:28,416 INFO L192 MainTranslator]: Completed translation [2019-09-16 17:07:28,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:28 WrapperNode [2019-09-16 17:07:28,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 17:07:28,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 17:07:28,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 17:07:28,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 17:07:28,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:28" (1/1) ... [2019-09-16 17:07:28,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:28" (1/1) ... [2019-09-16 17:07:28,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:28" (1/1) ... [2019-09-16 17:07:28,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:28" (1/1) ... [2019-09-16 17:07:28,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:28" (1/1) ... [2019-09-16 17:07:28,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:28" (1/1) ... [2019-09-16 17:07:28,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:28" (1/1) ... [2019-09-16 17:07:28,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 17:07:28,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 17:07:28,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 17:07:28,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 17:07:28,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:28" (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 [2019-09-16 17:07:28,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 17:07:28,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 17:07:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-16 17:07:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-16 17:07:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-16 17:07:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-16 17:07:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-16 17:07:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-16 17:07:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-16 17:07:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-16 17:07:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-16 17:07:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-16 17:07:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-16 17:07:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-09-16 17:07:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-16 17:07:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-09-16 17:07:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-09-16 17:07:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-09-16 17:07:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-09-16 17:07:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-09-16 17:07:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-09-16 17:07:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-09-16 17:07:28,664 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-09-16 17:07:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-09-16 17:07:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-09-16 17:07:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-09-16 17:07:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-09-16 17:07:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-09-16 17:07:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-09-16 17:07:28,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-09-16 17:07:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-09-16 17:07:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-09-16 17:07:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-09-16 17:07:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-09-16 17:07:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-09-16 17:07:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-09-16 17:07:28,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-09-16 17:07:28,667 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-09-16 17:07:28,667 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-09-16 17:07:28,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-09-16 17:07:28,667 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-09-16 17:07:28,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-09-16 17:07:28,668 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-09-16 17:07:28,668 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-09-16 17:07:28,668 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-09-16 17:07:28,668 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-09-16 17:07:28,668 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-09-16 17:07:28,668 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-09-16 17:07:28,669 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-09-16 17:07:28,669 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-09-16 17:07:28,669 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-09-16 17:07:28,669 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-09-16 17:07:28,669 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Base [2019-09-16 17:07:28,669 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-09-16 17:07:28,669 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-09-16 17:07:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-09-16 17:07:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-09-16 17:07:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-09-16 17:07:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-09-16 17:07:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-09-16 17:07:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-09-16 17:07:28,670 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-09-16 17:07:28,671 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-09-16 17:07:28,671 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-09-16 17:07:28,671 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-09-16 17:07:28,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-09-16 17:07:28,671 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-09-16 17:07:28,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-09-16 17:07:28,672 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-09-16 17:07:28,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-09-16 17:07:28,672 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-09-16 17:07:28,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-09-16 17:07:28,672 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-09-16 17:07:28,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-09-16 17:07:28,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-09-16 17:07:28,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-09-16 17:07:28,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-09-16 17:07:28,673 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-09-16 17:07:28,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-09-16 17:07:28,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-09-16 17:07:28,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-09-16 17:07:28,674 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-09-16 17:07:28,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-09-16 17:07:28,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-09-16 17:07:28,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-09-16 17:07:28,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptForward_spec__1 [2019-09-16 17:07:28,675 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-16 17:07:28,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-09-16 17:07:28,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-09-16 17:07:28,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-09-16 17:07:28,675 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-09-16 17:07:28,676 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-09-16 17:07:28,676 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-16 17:07:28,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 17:07:28,676 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-09-16 17:07:28,676 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-09-16 17:07:28,677 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-09-16 17:07:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 17:07:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 17:07:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-16 17:07:28,677 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-16 17:07:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-16 17:07:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-16 17:07:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-16 17:07:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-16 17:07:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-16 17:07:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-16 17:07:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-16 17:07:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-16 17:07:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-16 17:07:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-16 17:07:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-16 17:07:28,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-16 17:07:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-16 17:07:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-16 17:07:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-16 17:07:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-16 17:07:28,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-16 17:07:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-16 17:07:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-16 17:07:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-16 17:07:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-09-16 17:07:28,681 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-16 17:07:28,682 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-09-16 17:07:28,682 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-09-16 17:07:28,682 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-09-16 17:07:28,682 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-09-16 17:07:28,682 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-09-16 17:07:28,682 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-09-16 17:07:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-09-16 17:07:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-09-16 17:07:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-09-16 17:07:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-09-16 17:07:28,683 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-09-16 17:07:28,684 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-09-16 17:07:28,684 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-09-16 17:07:28,684 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-09-16 17:07:28,684 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-09-16 17:07:28,684 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-09-16 17:07:28,685 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-09-16 17:07:28,685 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-09-16 17:07:28,685 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-09-16 17:07:28,685 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-09-16 17:07:28,685 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-09-16 17:07:28,685 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-09-16 17:07:28,686 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-09-16 17:07:28,686 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-09-16 17:07:28,686 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-09-16 17:07:28,686 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-09-16 17:07:28,686 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-09-16 17:07:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-09-16 17:07:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-09-16 17:07:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-09-16 17:07:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-09-16 17:07:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-09-16 17:07:28,687 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-09-16 17:07:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-09-16 17:07:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-09-16 17:07:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-09-16 17:07:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-09-16 17:07:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-09-16 17:07:28,688 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-09-16 17:07:28,689 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-09-16 17:07:28,689 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-09-16 17:07:28,689 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-09-16 17:07:28,689 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-09-16 17:07:28,689 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-09-16 17:07:28,689 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-09-16 17:07:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-09-16 17:07:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-09-16 17:07:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-09-16 17:07:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-09-16 17:07:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-09-16 17:07:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-09-16 17:07:28,690 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-09-16 17:07:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-09-16 17:07:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Base [2019-09-16 17:07:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-09-16 17:07:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptForward_spec__1 [2019-09-16 17:07:28,691 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-09-16 17:07:28,692 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-09-16 17:07:28,692 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-09-16 17:07:28,692 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-09-16 17:07:28,692 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-09-16 17:07:28,692 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-09-16 17:07:28,692 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-09-16 17:07:28,693 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-09-16 17:07:28,693 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-09-16 17:07:28,693 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-09-16 17:07:28,693 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-09-16 17:07:28,693 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-09-16 17:07:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-09-16 17:07:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-09-16 17:07:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-09-16 17:07:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-09-16 17:07:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-09-16 17:07:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-09-16 17:07:28,694 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-09-16 17:07:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-09-16 17:07:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-16 17:07:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-09-16 17:07:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-09-16 17:07:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-09-16 17:07:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-09-16 17:07:28,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-16 17:07:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 17:07:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 17:07:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-16 17:07:28,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 17:07:30,606 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 17:07:30,606 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-16 17:07:30,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:30 BoogieIcfgContainer [2019-09-16 17:07:30,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 17:07:30,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 17:07:30,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 17:07:30,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 17:07:30,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 05:07:27" (1/3) ... [2019-09-16 17:07:30,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f4f1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:30, skipping insertion in model container [2019-09-16 17:07:30,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 05:07:28" (2/3) ... [2019-09-16 17:07:30,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f4f1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 05:07:30, skipping insertion in model container [2019-09-16 17:07:30,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 05:07:30" (3/3) ... [2019-09-16 17:07:30,617 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec0_product36.cil.c [2019-09-16 17:07:30,628 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 17:07:30,640 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 17:07:30,658 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 17:07:30,695 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 17:07:30,695 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-16 17:07:30,696 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 17:07:30,696 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 17:07:30,696 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 17:07:30,696 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 17:07:30,696 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 17:07:30,696 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 17:07:30,735 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states. [2019-09-16 17:07:30,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-09-16 17:07:30,776 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:30,778 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:30,783 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:30,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:30,789 INFO L82 PathProgramCache]: Analyzing trace with hash -181323665, now seen corresponding path program 1 times [2019-09-16 17:07:30,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:30,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:30,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:30,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:30,854 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:31,389 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-16 17:07:31,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:31,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-16 17:07:31,392 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:31,397 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-16 17:07:31,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-16 17:07:31,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-16 17:07:31,415 INFO L87 Difference]: Start difference. First operand 353 states. Second operand 2 states. [2019-09-16 17:07:31,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:31,458 INFO L93 Difference]: Finished difference Result 343 states and 457 transitions. [2019-09-16 17:07:31,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-16 17:07:31,459 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 150 [2019-09-16 17:07:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:31,479 INFO L225 Difference]: With dead ends: 343 [2019-09-16 17:07:31,479 INFO L226 Difference]: Without dead ends: 334 [2019-09-16 17:07:31,481 INFO L636 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 [2019-09-16 17:07:31,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2019-09-16 17:07:31,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2019-09-16 17:07:31,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2019-09-16 17:07:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 446 transitions. [2019-09-16 17:07:31,560 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 446 transitions. Word has length 150 [2019-09-16 17:07:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:31,562 INFO L475 AbstractCegarLoop]: Abstraction has 334 states and 446 transitions. [2019-09-16 17:07:31,562 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-16 17:07:31,563 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 446 transitions. [2019-09-16 17:07:31,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-09-16 17:07:31,566 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:31,567 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:31,567 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:31,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:31,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1201394716, now seen corresponding path program 1 times [2019-09-16 17:07:31,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:31,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:31,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:31,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:31,573 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-16 17:07:31,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:31,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:07:31,868 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:31,874 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:07:31,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:07:31,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:07:31,876 INFO L87 Difference]: Start difference. First operand 334 states and 446 transitions. Second operand 3 states. [2019-09-16 17:07:31,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:31,927 INFO L93 Difference]: Finished difference Result 337 states and 449 transitions. [2019-09-16 17:07:31,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:07:31,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2019-09-16 17:07:31,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:31,937 INFO L225 Difference]: With dead ends: 337 [2019-09-16 17:07:31,937 INFO L226 Difference]: Without dead ends: 337 [2019-09-16 17:07:31,938 INFO L636 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 [2019-09-16 17:07:31,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2019-09-16 17:07:32,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 336. [2019-09-16 17:07:32,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-09-16 17:07:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 448 transitions. [2019-09-16 17:07:32,008 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 448 transitions. Word has length 151 [2019-09-16 17:07:32,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:32,009 INFO L475 AbstractCegarLoop]: Abstraction has 336 states and 448 transitions. [2019-09-16 17:07:32,009 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:07:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 448 transitions. [2019-09-16 17:07:32,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-09-16 17:07:32,015 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:32,015 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:32,016 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:32,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:32,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1898498474, now seen corresponding path program 1 times [2019-09-16 17:07:32,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:32,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:32,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:32,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:32,023 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-09-16 17:07:32,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:32,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:07:32,247 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:32,248 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:07:32,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:07:32,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:07:32,249 INFO L87 Difference]: Start difference. First operand 336 states and 448 transitions. Second operand 6 states. [2019-09-16 17:07:32,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:32,712 INFO L93 Difference]: Finished difference Result 632 states and 853 transitions. [2019-09-16 17:07:32,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:07:32,713 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2019-09-16 17:07:32,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:32,719 INFO L225 Difference]: With dead ends: 632 [2019-09-16 17:07:32,719 INFO L226 Difference]: Without dead ends: 632 [2019-09-16 17:07:32,720 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:07:32,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2019-09-16 17:07:32,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 623. [2019-09-16 17:07:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-09-16 17:07:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 845 transitions. [2019-09-16 17:07:32,782 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 845 transitions. Word has length 156 [2019-09-16 17:07:32,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:32,784 INFO L475 AbstractCegarLoop]: Abstraction has 623 states and 845 transitions. [2019-09-16 17:07:32,784 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:07:32,785 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 845 transitions. [2019-09-16 17:07:32,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-09-16 17:07:32,790 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:32,790 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:32,791 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:32,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:32,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1024196321, now seen corresponding path program 1 times [2019-09-16 17:07:32,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:32,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:32,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:32,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:32,797 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-09-16 17:07:33,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:33,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:07:33,068 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:33,068 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:07:33,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:07:33,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:07:33,069 INFO L87 Difference]: Start difference. First operand 623 states and 845 transitions. Second operand 9 states. [2019-09-16 17:07:33,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:33,235 INFO L93 Difference]: Finished difference Result 653 states and 884 transitions. [2019-09-16 17:07:33,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-16 17:07:33,236 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2019-09-16 17:07:33,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:33,241 INFO L225 Difference]: With dead ends: 653 [2019-09-16 17:07:33,241 INFO L226 Difference]: Without dead ends: 653 [2019-09-16 17:07:33,242 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-16 17:07:33,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2019-09-16 17:07:33,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 643. [2019-09-16 17:07:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2019-09-16 17:07:33,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 871 transitions. [2019-09-16 17:07:33,274 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 871 transitions. Word has length 157 [2019-09-16 17:07:33,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:33,275 INFO L475 AbstractCegarLoop]: Abstraction has 643 states and 871 transitions. [2019-09-16 17:07:33,275 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:07:33,275 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 871 transitions. [2019-09-16 17:07:33,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-09-16 17:07:33,279 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:33,279 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:33,280 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:33,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:33,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1612761881, now seen corresponding path program 1 times [2019-09-16 17:07:33,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:33,284 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:33,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:33,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:33,285 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-09-16 17:07:33,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:33,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:07:33,450 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:33,450 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:07:33,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:07:33,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:07:33,451 INFO L87 Difference]: Start difference. First operand 643 states and 871 transitions. Second operand 6 states. [2019-09-16 17:07:33,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:33,880 INFO L93 Difference]: Finished difference Result 1258 states and 1713 transitions. [2019-09-16 17:07:33,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:07:33,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2019-09-16 17:07:33,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:33,894 INFO L225 Difference]: With dead ends: 1258 [2019-09-16 17:07:33,894 INFO L226 Difference]: Without dead ends: 1258 [2019-09-16 17:07:33,895 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:07:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2019-09-16 17:07:33,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1237. [2019-09-16 17:07:33,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1237 states. [2019-09-16 17:07:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1693 transitions. [2019-09-16 17:07:33,971 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1693 transitions. Word has length 158 [2019-09-16 17:07:33,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:33,973 INFO L475 AbstractCegarLoop]: Abstraction has 1237 states and 1693 transitions. [2019-09-16 17:07:33,974 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:07:33,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1693 transitions. [2019-09-16 17:07:33,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-09-16 17:07:33,980 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:33,981 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:33,981 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:33,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:33,982 INFO L82 PathProgramCache]: Analyzing trace with hash -318587094, now seen corresponding path program 1 times [2019-09-16 17:07:33,982 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:33,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:33,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:33,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:33,989 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-09-16 17:07:34,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:34,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-16 17:07:34,228 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:34,229 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 17:07:34,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 17:07:34,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:07:34,230 INFO L87 Difference]: Start difference. First operand 1237 states and 1693 transitions. Second operand 9 states. [2019-09-16 17:07:34,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:34,426 INFO L93 Difference]: Finished difference Result 1297 states and 1771 transitions. [2019-09-16 17:07:34,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-16 17:07:34,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 159 [2019-09-16 17:07:34,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:34,436 INFO L225 Difference]: With dead ends: 1297 [2019-09-16 17:07:34,436 INFO L226 Difference]: Without dead ends: 1297 [2019-09-16 17:07:34,437 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-16 17:07:34,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2019-09-16 17:07:34,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1277. [2019-09-16 17:07:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1277 states. [2019-09-16 17:07:34,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1745 transitions. [2019-09-16 17:07:34,518 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1745 transitions. Word has length 159 [2019-09-16 17:07:34,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:34,521 INFO L475 AbstractCegarLoop]: Abstraction has 1277 states and 1745 transitions. [2019-09-16 17:07:34,521 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 17:07:34,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1745 transitions. [2019-09-16 17:07:34,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-09-16 17:07:34,526 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:34,527 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:34,527 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:34,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:34,527 INFO L82 PathProgramCache]: Analyzing trace with hash 860819702, now seen corresponding path program 1 times [2019-09-16 17:07:34,528 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:34,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:34,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:34,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:34,532 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:34,691 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-09-16 17:07:34,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:34,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-16 17:07:34,692 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:34,693 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-16 17:07:34,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-16 17:07:34,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-16 17:07:34,694 INFO L87 Difference]: Start difference. First operand 1277 states and 1745 transitions. Second operand 6 states. [2019-09-16 17:07:35,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:35,067 INFO L93 Difference]: Finished difference Result 2498 states and 3428 transitions. [2019-09-16 17:07:35,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:07:35,068 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2019-09-16 17:07:35,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:35,080 INFO L225 Difference]: With dead ends: 2498 [2019-09-16 17:07:35,081 INFO L226 Difference]: Without dead ends: 2314 [2019-09-16 17:07:35,081 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-16 17:07:35,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2019-09-16 17:07:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 2281. [2019-09-16 17:07:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2019-09-16 17:07:35,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 3161 transitions. [2019-09-16 17:07:35,221 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 3161 transitions. Word has length 160 [2019-09-16 17:07:35,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:35,221 INFO L475 AbstractCegarLoop]: Abstraction has 2281 states and 3161 transitions. [2019-09-16 17:07:35,221 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-16 17:07:35,222 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 3161 transitions. [2019-09-16 17:07:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-09-16 17:07:35,228 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:35,228 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:35,229 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:35,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:35,229 INFO L82 PathProgramCache]: Analyzing trace with hash 498604292, now seen corresponding path program 1 times [2019-09-16 17:07:35,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:35,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:35,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:35,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:35,233 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-16 17:07:35,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:35,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:07:35,358 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:35,359 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:07:35,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:07:35,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:07:35,360 INFO L87 Difference]: Start difference. First operand 2281 states and 3161 transitions. Second operand 3 states. [2019-09-16 17:07:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:35,392 INFO L93 Difference]: Finished difference Result 2528 states and 3609 transitions. [2019-09-16 17:07:35,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:07:35,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-09-16 17:07:35,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:35,411 INFO L225 Difference]: With dead ends: 2528 [2019-09-16 17:07:35,412 INFO L226 Difference]: Without dead ends: 2528 [2019-09-16 17:07:35,412 INFO L636 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 [2019-09-16 17:07:35,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2019-09-16 17:07:35,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2521. [2019-09-16 17:07:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2521 states. [2019-09-16 17:07:35,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3602 transitions. [2019-09-16 17:07:35,508 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3602 transitions. Word has length 170 [2019-09-16 17:07:35,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:35,516 INFO L475 AbstractCegarLoop]: Abstraction has 2521 states and 3602 transitions. [2019-09-16 17:07:35,516 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:07:35,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3602 transitions. [2019-09-16 17:07:35,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-09-16 17:07:35,526 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:35,526 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:35,526 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:35,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:35,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1907924547, now seen corresponding path program 1 times [2019-09-16 17:07:35,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:35,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:35,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:35,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:35,531 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-16 17:07:35,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:35,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:07:35,653 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:35,654 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:07:35,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:07:35,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:07:35,655 INFO L87 Difference]: Start difference. First operand 2521 states and 3602 transitions. Second operand 3 states. [2019-09-16 17:07:35,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:35,693 INFO L93 Difference]: Finished difference Result 2968 states and 4419 transitions. [2019-09-16 17:07:35,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:07:35,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-09-16 17:07:35,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:35,712 INFO L225 Difference]: With dead ends: 2968 [2019-09-16 17:07:35,712 INFO L226 Difference]: Without dead ends: 2968 [2019-09-16 17:07:35,713 INFO L636 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 [2019-09-16 17:07:35,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2968 states. [2019-09-16 17:07:35,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2968 to 2961. [2019-09-16 17:07:35,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2961 states. [2019-09-16 17:07:35,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2961 states to 2961 states and 4412 transitions. [2019-09-16 17:07:35,825 INFO L78 Accepts]: Start accepts. Automaton has 2961 states and 4412 transitions. Word has length 171 [2019-09-16 17:07:35,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:35,826 INFO L475 AbstractCegarLoop]: Abstraction has 2961 states and 4412 transitions. [2019-09-16 17:07:35,826 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:07:35,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2961 states and 4412 transitions. [2019-09-16 17:07:35,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-09-16 17:07:35,840 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:35,840 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:35,841 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:35,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:35,841 INFO L82 PathProgramCache]: Analyzing trace with hash -887774842, now seen corresponding path program 1 times [2019-09-16 17:07:35,841 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:35,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:35,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:35,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:35,845 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-16 17:07:35,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:35,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:07:35,967 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:35,968 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:07:35,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:07:35,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:07:35,969 INFO L87 Difference]: Start difference. First operand 2961 states and 4412 transitions. Second operand 3 states. [2019-09-16 17:07:36,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:36,003 INFO L93 Difference]: Finished difference Result 3864 states and 6039 transitions. [2019-09-16 17:07:36,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:07:36,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2019-09-16 17:07:36,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:36,027 INFO L225 Difference]: With dead ends: 3864 [2019-09-16 17:07:36,028 INFO L226 Difference]: Without dead ends: 3864 [2019-09-16 17:07:36,028 INFO L636 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 [2019-09-16 17:07:36,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2019-09-16 17:07:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 3857. [2019-09-16 17:07:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3857 states. [2019-09-16 17:07:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3857 states to 3857 states and 6032 transitions. [2019-09-16 17:07:36,194 INFO L78 Accepts]: Start accepts. Automaton has 3857 states and 6032 transitions. Word has length 172 [2019-09-16 17:07:36,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:36,195 INFO L475 AbstractCegarLoop]: Abstraction has 3857 states and 6032 transitions. [2019-09-16 17:07:36,195 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:07:36,195 INFO L276 IsEmpty]: Start isEmpty. Operand 3857 states and 6032 transitions. [2019-09-16 17:07:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-09-16 17:07:36,210 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:36,210 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:36,211 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:36,211 INFO L82 PathProgramCache]: Analyzing trace with hash 543709501, now seen corresponding path program 1 times [2019-09-16 17:07:36,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:36,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:36,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:36,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:36,216 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-16 17:07:36,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:36,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:07:36,317 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:36,318 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:07:36,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:07:36,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:07:36,319 INFO L87 Difference]: Start difference. First operand 3857 states and 6032 transitions. Second operand 3 states. [2019-09-16 17:07:36,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:36,374 INFO L93 Difference]: Finished difference Result 5624 states and 9183 transitions. [2019-09-16 17:07:36,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:07:36,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2019-09-16 17:07:36,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:36,414 INFO L225 Difference]: With dead ends: 5624 [2019-09-16 17:07:36,415 INFO L226 Difference]: Without dead ends: 5624 [2019-09-16 17:07:36,416 INFO L636 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 [2019-09-16 17:07:36,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5624 states. [2019-09-16 17:07:36,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5624 to 5617. [2019-09-16 17:07:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5617 states. [2019-09-16 17:07:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5617 states to 5617 states and 9176 transitions. [2019-09-16 17:07:36,593 INFO L78 Accepts]: Start accepts. Automaton has 5617 states and 9176 transitions. Word has length 173 [2019-09-16 17:07:36,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:36,593 INFO L475 AbstractCegarLoop]: Abstraction has 5617 states and 9176 transitions. [2019-09-16 17:07:36,594 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:07:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5617 states and 9176 transitions. [2019-09-16 17:07:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-09-16 17:07:36,612 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:36,612 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:36,613 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:36,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:36,614 INFO L82 PathProgramCache]: Analyzing trace with hash -860751288, now seen corresponding path program 1 times [2019-09-16 17:07:36,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:36,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:36,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:36,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:36,620 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:36,720 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-16 17:07:36,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:36,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-16 17:07:36,723 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:36,725 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-16 17:07:36,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-16 17:07:36,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-16 17:07:36,727 INFO L87 Difference]: Start difference. First operand 5617 states and 9176 transitions. Second operand 3 states. [2019-09-16 17:07:36,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:36,781 INFO L93 Difference]: Finished difference Result 9080 states and 15279 transitions. [2019-09-16 17:07:36,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-16 17:07:36,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-09-16 17:07:36,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:36,854 INFO L225 Difference]: With dead ends: 9080 [2019-09-16 17:07:36,854 INFO L226 Difference]: Without dead ends: 9080 [2019-09-16 17:07:36,855 INFO L636 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 [2019-09-16 17:07:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9080 states. [2019-09-16 17:07:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9080 to 9073. [2019-09-16 17:07:37,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9073 states. [2019-09-16 17:07:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9073 states to 9073 states and 15272 transitions. [2019-09-16 17:07:37,128 INFO L78 Accepts]: Start accepts. Automaton has 9073 states and 15272 transitions. Word has length 174 [2019-09-16 17:07:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:37,128 INFO L475 AbstractCegarLoop]: Abstraction has 9073 states and 15272 transitions. [2019-09-16 17:07:37,128 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-16 17:07:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 9073 states and 15272 transitions. [2019-09-16 17:07:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-09-16 17:07:37,161 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 17:07:37,162 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-09-16 17:07:37,162 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 17:07:37,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 17:07:37,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1091720315, now seen corresponding path program 1 times [2019-09-16 17:07:37,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-16 17:07:37,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:37,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 17:07:37,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 17:07:37,168 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-16 17:07:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 17:07:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-09-16 17:07:37,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 17:07:37,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-16 17:07:37,353 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-16 17:07:37,353 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 17:07:37,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 17:07:37,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:07:37,354 INFO L87 Difference]: Start difference. First operand 9073 states and 15272 transitions. Second operand 8 states. [2019-09-16 17:07:37,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 17:07:37,424 INFO L93 Difference]: Finished difference Result 9070 states and 15263 transitions. [2019-09-16 17:07:37,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 17:07:37,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 175 [2019-09-16 17:07:37,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 17:07:37,426 INFO L225 Difference]: With dead ends: 9070 [2019-09-16 17:07:37,426 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 17:07:37,426 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-16 17:07:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 17:07:37,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 17:07:37,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 17:07:37,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 17:07:37,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 175 [2019-09-16 17:07:37,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 17:07:37,427 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 17:07:37,428 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 17:07:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 17:07:37,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 17:07:37,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 05:07:37 BoogieIcfgContainer [2019-09-16 17:07:37,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 17:07:37,438 INFO L168 Benchmark]: Toolchain (without parser) took 9983.10 ms. Allocated memory was 134.2 MB in the beginning and 513.8 MB in the end (delta: 379.6 MB). Free memory was 82.8 MB in the beginning and 292.0 MB in the end (delta: -209.2 MB). Peak memory consumption was 170.3 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:37,440 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory was 103.5 MB in the beginning and 103.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 17:07:37,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 962.24 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 82.6 MB in the beginning and 140.4 MB in the end (delta: -57.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:37,443 INFO L168 Benchmark]: Boogie Preprocessor took 163.40 ms. Allocated memory is still 200.8 MB. Free memory was 140.4 MB in the beginning and 132.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:37,448 INFO L168 Benchmark]: RCFGBuilder took 2026.84 ms. Allocated memory was 200.8 MB in the beginning and 269.5 MB in the end (delta: 68.7 MB). Free memory was 132.3 MB in the beginning and 211.1 MB in the end (delta: -78.8 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:37,449 INFO L168 Benchmark]: TraceAbstraction took 6825.02 ms. Allocated memory was 269.5 MB in the beginning and 513.8 MB in the end (delta: 244.3 MB). Free memory was 211.1 MB in the beginning and 292.0 MB in the end (delta: -80.9 MB). Peak memory consumption was 163.4 MB. Max. memory is 7.1 GB. [2019-09-16 17:07:37,462 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 134.2 MB. Free memory was 103.5 MB in the beginning and 103.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 962.24 ms. Allocated memory was 134.2 MB in the beginning and 200.8 MB in the end (delta: 66.6 MB). Free memory was 82.6 MB in the beginning and 140.4 MB in the end (delta: -57.8 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 163.40 ms. Allocated memory is still 200.8 MB. Free memory was 140.4 MB in the beginning and 132.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2026.84 ms. Allocated memory was 200.8 MB in the beginning and 269.5 MB in the end (delta: 68.7 MB). Free memory was 132.3 MB in the beginning and 211.1 MB in the end (delta: -78.8 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6825.02 ms. Allocated memory was 269.5 MB in the beginning and 513.8 MB in the end (delta: 244.3 MB). Free memory was 211.1 MB in the beginning and 292.0 MB in the end (delta: -80.9 MB). Peak memory consumption was 163.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 476]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 97 procedures, 652 locations, 1 error locations. SAFE Result, 6.7s OverallTime, 13 OverallIterations, 3 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5966 SDtfs, 1486 SDslu, 16629 SDs, 0 SdLazy, 764 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9073occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 129 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 2126 NumberOfCodeBlocks, 2126 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2113 ConstructedInterpolants, 0 QuantifiedInterpolants, 416539 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 282/282 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...