java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:12:47,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:12:47,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:12:47,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:12:47,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:12:47,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:12:47,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:12:47,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:12:47,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:12:47,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:12:47,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:12:47,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:12:47,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:12:47,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:12:47,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:12:47,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:12:47,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:12:47,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:12:47,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:12:47,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:12:47,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:12:47,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:12:47,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:12:47,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:12:47,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:12:47,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:12:47,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:12:47,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:12:47,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:12:47,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:12:47,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:12:47,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:12:47,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:12:47,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:12:47,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:12:47,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:12:47,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:12:47,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:12:47,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:12:47,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:12:47,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:12:47,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:12:47,713 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:12:47,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:12:47,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:12:47,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:12:47,715 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:12:47,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:12:47,716 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:12:47,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:12:47,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:12:47,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:12:47,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:12:47,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:12:47,717 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:12:47,717 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:12:47,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:12:47,718 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:12:47,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:12:47,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:12:47,718 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:12:47,718 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:12:47,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:12:47,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:12:47,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:12:47,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:12:47,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:12:47,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:12:47,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:12:47,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:12:47,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:12:48,022 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:12:48,042 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:12:48,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:12:48,049 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:12:48,049 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:12:48,050 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product35.cil.c [2019-10-15 01:12:48,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4a56406/c4b7851bc5c046278788254cba528a40/FLAG77367b372 [2019-10-15 01:12:48,777 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:12:48,779 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product35.cil.c [2019-10-15 01:12:48,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4a56406/c4b7851bc5c046278788254cba528a40/FLAG77367b372 [2019-10-15 01:12:48,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4a56406/c4b7851bc5c046278788254cba528a40 [2019-10-15 01:12:48,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:12:48,970 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:12:48,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:12:48,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:12:48,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:12:48,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:12:48" (1/1) ... [2019-10-15 01:12:48,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3824762d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:48, skipping insertion in model container [2019-10-15 01:12:48,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:12:48" (1/1) ... [2019-10-15 01:12:48,986 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:12:49,073 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:12:50,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:12:50,063 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:12:50,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:12:50,308 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:12:50,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:50 WrapperNode [2019-10-15 01:12:50,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:12:50,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:12:50,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:12:50,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:12:50,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:50" (1/1) ... [2019-10-15 01:12:50,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:50" (1/1) ... [2019-10-15 01:12:50,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:50" (1/1) ... [2019-10-15 01:12:50,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:50" (1/1) ... [2019-10-15 01:12:50,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:50" (1/1) ... [2019-10-15 01:12:50,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:50" (1/1) ... [2019-10-15 01:12:50,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:50" (1/1) ... [2019-10-15 01:12:50,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:12:50,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:12:50,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:12:50,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:12:50,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:12:50,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:12:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:12:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:12:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:12:50,603 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:12:50,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:12:50,605 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:12:50,605 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:12:50,605 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:12:50,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:12:50,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:12:50,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:12:50,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:12:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:12:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:12:50,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:12:50,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:12:50,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:12:50,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:12:50,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:12:50,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:12:50,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:12:50,612 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:12:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:12:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:12:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:12:50,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:12:50,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:12:50,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:12:50,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:12:50,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:12:50,614 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:12:50,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:12:50,615 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:12:50,615 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:12:50,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:12:50,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:12:50,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:12:50,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:12:50,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:12:50,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:12:50,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:12:50,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:12:50,617 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:12:50,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:12:50,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:12:50,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:12:50,617 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:12:50,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:12:50,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:12:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:12:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:12:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:12:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-15 01:12:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:12:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:12:50,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:12:50,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:12:50,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:12:50,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:12:50,619 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:12:50,620 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:12:50,620 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:12:50,620 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:12:50,621 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:12:50,621 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:12:50,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:12:50,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:12:50,621 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:12:50,621 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:12:50,622 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:12:50,622 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:12:50,622 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:12:50,623 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:12:50,623 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:12:50,623 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:12:50,623 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:12:50,623 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:12:50,623 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:12:50,624 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:12:50,624 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:12:50,625 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:12:50,625 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:12:50,625 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:12:50,625 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:12:50,626 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:12:50,626 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:12:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:12:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:12:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:12:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:12:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:12:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:12:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:12:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:12:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:12:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:12:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:12:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:12:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:12:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:12:50,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:12:50,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:12:50,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:12:50,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:12:50,630 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:12:50,631 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:12:50,631 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:12:50,631 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:12:50,631 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:12:50,631 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:12:50,631 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:12:50,632 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:12:50,632 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:12:50,632 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:12:50,632 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:12:50,632 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:12:50,633 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:12:50,633 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:12:50,633 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:12:50,634 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:12:50,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:12:50,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:12:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:12:50,635 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:12:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:12:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:12:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:12:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:12:50,636 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:12:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:12:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:12:50,637 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:12:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:12:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:12:50,638 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:12:50,639 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:12:50,640 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:12:50,641 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:12:50,641 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:12:50,641 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:12:50,641 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:12:50,641 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:12:50,641 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:12:50,642 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:12:50,642 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:12:50,642 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:12:50,642 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:12:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:12:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:12:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:12:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:12:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:12:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:12:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:12:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:12:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:12:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:12:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:12:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:12:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:12:50,646 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:12:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:12:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:12:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:12:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:12:50,647 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:12:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:12:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:12:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:12:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:12:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:12:50,648 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:12:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:12:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:12:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:12:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-15 01:12:50,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:12:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:12:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:12:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:12:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:12:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:12:50,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:12:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:12:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:12:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:12:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:12:50,651 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:12:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:12:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:12:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:12:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:12:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:12:50,652 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:12:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:12:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:12:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:12:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:12:50,653 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:12:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:12:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:12:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:12:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:12:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:12:50,654 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:12:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:12:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:12:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:12:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:12:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:12:50,655 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:12:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:12:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:12:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:12:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:12:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:12:50,656 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:12:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:12:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:12:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:12:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:12:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:12:50,657 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:12:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:12:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:12:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:12:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:12:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:12:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:12:50,658 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:12:50,659 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:12:50,659 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:12:50,659 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:12:50,659 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:12:50,659 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:12:50,659 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:12:50,660 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:12:50,660 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:12:50,660 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:12:50,660 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:12:50,660 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:12:50,660 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:12:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:12:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:12:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:12:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:12:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:12:50,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:12:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:12:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:12:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:12:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:12:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:12:50,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:12:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:12:50,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:12:53,105 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:12:53,105 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:12:53,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:12:53 BoogieIcfgContainer [2019-10-15 01:12:53,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:12:53,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:12:53,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:12:53,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:12:53,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:12:48" (1/3) ... [2019-10-15 01:12:53,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc41ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:12:53, skipping insertion in model container [2019-10-15 01:12:53,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:12:50" (2/3) ... [2019-10-15 01:12:53,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dc41ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:12:53, skipping insertion in model container [2019-10-15 01:12:53,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:12:53" (3/3) ... [2019-10-15 01:12:53,115 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product35.cil.c [2019-10-15 01:12:53,127 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:12:53,139 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:12:53,163 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:12:53,207 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:12:53,208 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:12:53,208 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:12:53,208 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:12:53,208 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:12:53,208 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:12:53,208 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:12:53,208 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:12:53,253 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states. [2019-10-15 01:12:53,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-15 01:12:53,292 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:53,294 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:53,296 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:53,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:53,303 INFO L82 PathProgramCache]: Analyzing trace with hash 425045218, now seen corresponding path program 1 times [2019-10-15 01:12:53,313 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:53,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367379603] [2019-10-15 01:12:53,314 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:53,314 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:53,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:53,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367379603] [2019-10-15 01:12:53,981 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:53,981 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:12:53,981 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244135644] [2019-10-15 01:12:53,987 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:12:53,989 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:54,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:12:54,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:12:54,005 INFO L87 Difference]: Start difference. First operand 680 states. Second operand 2 states. [2019-10-15 01:12:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:54,118 INFO L93 Difference]: Finished difference Result 1035 states and 1396 transitions. [2019-10-15 01:12:54,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:12:54,120 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 227 [2019-10-15 01:12:54,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:54,158 INFO L225 Difference]: With dead ends: 1035 [2019-10-15 01:12:54,158 INFO L226 Difference]: Without dead ends: 651 [2019-10-15 01:12:54,170 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:12:54,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-15 01:12:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-15 01:12:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-15 01:12:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 881 transitions. [2019-10-15 01:12:54,288 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 881 transitions. Word has length 227 [2019-10-15 01:12:54,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:54,290 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 881 transitions. [2019-10-15 01:12:54,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:12:54,291 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 881 transitions. [2019-10-15 01:12:54,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-15 01:12:54,305 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:54,306 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:54,306 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:54,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:54,307 INFO L82 PathProgramCache]: Analyzing trace with hash -953379524, now seen corresponding path program 1 times [2019-10-15 01:12:54,307 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:54,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463993049] [2019-10-15 01:12:54,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:54,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:54,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:54,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463993049] [2019-10-15 01:12:54,684 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:54,684 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:12:54,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470158113] [2019-10-15 01:12:54,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:54,687 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:54,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:54,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:54,688 INFO L87 Difference]: Start difference. First operand 651 states and 881 transitions. Second operand 3 states. [2019-10-15 01:12:54,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:54,784 INFO L93 Difference]: Finished difference Result 1018 states and 1356 transitions. [2019-10-15 01:12:54,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:54,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2019-10-15 01:12:54,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:54,794 INFO L225 Difference]: With dead ends: 1018 [2019-10-15 01:12:54,796 INFO L226 Difference]: Without dead ends: 654 [2019-10-15 01:12:54,799 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:54,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-10-15 01:12:54,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 653. [2019-10-15 01:12:54,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2019-10-15 01:12:54,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 883 transitions. [2019-10-15 01:12:54,865 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 883 transitions. Word has length 228 [2019-10-15 01:12:54,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:54,865 INFO L462 AbstractCegarLoop]: Abstraction has 653 states and 883 transitions. [2019-10-15 01:12:54,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:54,866 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 883 transitions. [2019-10-15 01:12:54,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-10-15 01:12:54,871 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:54,871 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:54,872 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:54,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:54,872 INFO L82 PathProgramCache]: Analyzing trace with hash 416765675, now seen corresponding path program 1 times [2019-10-15 01:12:54,873 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:54,873 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447816151] [2019-10-15 01:12:54,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:54,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:54,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:55,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447816151] [2019-10-15 01:12:55,065 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:55,065 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:12:55,065 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598222932] [2019-10-15 01:12:55,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:55,067 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:55,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:55,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:55,068 INFO L87 Difference]: Start difference. First operand 653 states and 883 transitions. Second operand 3 states. [2019-10-15 01:12:55,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:55,130 INFO L93 Difference]: Finished difference Result 1286 states and 1770 transitions. [2019-10-15 01:12:55,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:55,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2019-10-15 01:12:55,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:55,147 INFO L225 Difference]: With dead ends: 1286 [2019-10-15 01:12:55,147 INFO L226 Difference]: Without dead ends: 698 [2019-10-15 01:12:55,151 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2019-10-15 01:12:55,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 697. [2019-10-15 01:12:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2019-10-15 01:12:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 958 transitions. [2019-10-15 01:12:55,204 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 958 transitions. Word has length 240 [2019-10-15 01:12:55,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:55,206 INFO L462 AbstractCegarLoop]: Abstraction has 697 states and 958 transitions. [2019-10-15 01:12:55,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:55,207 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 958 transitions. [2019-10-15 01:12:55,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-10-15 01:12:55,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:55,224 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:55,224 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:55,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:55,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1867683247, now seen corresponding path program 1 times [2019-10-15 01:12:55,225 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:55,226 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264380467] [2019-10-15 01:12:55,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:55,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:55,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 01:12:55,666 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264380467] [2019-10-15 01:12:55,666 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:55,666 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:12:55,666 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577717319] [2019-10-15 01:12:55,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:12:55,667 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:55,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:12:55,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:55,668 INFO L87 Difference]: Start difference. First operand 697 states and 958 transitions. Second operand 3 states. [2019-10-15 01:12:55,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:12:55,710 INFO L93 Difference]: Finished difference Result 1415 states and 1990 transitions. [2019-10-15 01:12:55,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:12:55,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2019-10-15 01:12:55,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:12:55,718 INFO L225 Difference]: With dead ends: 1415 [2019-10-15 01:12:55,718 INFO L226 Difference]: Without dead ends: 783 [2019-10-15 01:12:55,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:12:55,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2019-10-15 01:12:55,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 782. [2019-10-15 01:12:55,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2019-10-15 01:12:55,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1102 transitions. [2019-10-15 01:12:55,757 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1102 transitions. Word has length 241 [2019-10-15 01:12:55,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:12:55,758 INFO L462 AbstractCegarLoop]: Abstraction has 782 states and 1102 transitions. [2019-10-15 01:12:55,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:12:55,758 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1102 transitions. [2019-10-15 01:12:55,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-15 01:12:55,764 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:12:55,764 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:12:55,765 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:12:55,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:12:55,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1661984966, now seen corresponding path program 1 times [2019-10-15 01:12:55,765 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:12:55,766 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000033879] [2019-10-15 01:12:55,766 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:55,766 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:12:55,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:12:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:12:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-15 01:12:56,293 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000033879] [2019-10-15 01:12:56,293 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:12:56,293 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-15 01:12:56,293 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750923347] [2019-10-15 01:12:56,294 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-15 01:12:56,294 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:12:56,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-15 01:12:56,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:12:56,295 INFO L87 Difference]: Start difference. First operand 782 states and 1102 transitions. Second operand 19 states. [2019-10-15 01:13:02,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:02,711 INFO L93 Difference]: Finished difference Result 2650 states and 3737 transitions. [2019-10-15 01:13:02,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-15 01:13:02,712 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 244 [2019-10-15 01:13:02,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:02,737 INFO L225 Difference]: With dead ends: 2650 [2019-10-15 01:13:02,738 INFO L226 Difference]: Without dead ends: 2299 [2019-10-15 01:13:02,741 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-15 01:13:02,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2019-10-15 01:13:02,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2262. [2019-10-15 01:13:02,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2019-10-15 01:13:02,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3204 transitions. [2019-10-15 01:13:02,880 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3204 transitions. Word has length 244 [2019-10-15 01:13:02,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:02,881 INFO L462 AbstractCegarLoop]: Abstraction has 2262 states and 3204 transitions. [2019-10-15 01:13:02,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-15 01:13:02,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3204 transitions. [2019-10-15 01:13:02,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-15 01:13:02,897 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:02,898 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:02,898 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:02,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:02,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1407477613, now seen corresponding path program 1 times [2019-10-15 01:13:02,899 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:02,899 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566369290] [2019-10-15 01:13:02,899 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:02,899 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:02,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:03,378 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-15 01:13:03,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566369290] [2019-10-15 01:13:03,382 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:03,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-15 01:13:03,383 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101524029] [2019-10-15 01:13:03,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:13:03,384 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:03,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:13:03,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:13:03,384 INFO L87 Difference]: Start difference. First operand 2262 states and 3204 transitions. Second operand 15 states. [2019-10-15 01:13:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:08,269 INFO L93 Difference]: Finished difference Result 3819 states and 5362 transitions. [2019-10-15 01:13:08,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-15 01:13:08,270 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 245 [2019-10-15 01:13:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:08,289 INFO L225 Difference]: With dead ends: 3819 [2019-10-15 01:13:08,289 INFO L226 Difference]: Without dead ends: 2364 [2019-10-15 01:13:08,297 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-15 01:13:08,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2019-10-15 01:13:08,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2332. [2019-10-15 01:13:08,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2019-10-15 01:13:08,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3322 transitions. [2019-10-15 01:13:08,470 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3322 transitions. Word has length 245 [2019-10-15 01:13:08,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:08,476 INFO L462 AbstractCegarLoop]: Abstraction has 2332 states and 3322 transitions. [2019-10-15 01:13:08,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:13:08,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3322 transitions. [2019-10-15 01:13:08,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-15 01:13:08,494 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:08,495 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:08,495 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:08,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:08,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1677626999, now seen corresponding path program 1 times [2019-10-15 01:13:08,496 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:08,496 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980993912] [2019-10-15 01:13:08,497 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:08,497 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:08,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:08,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-15 01:13:08,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980993912] [2019-10-15 01:13:08,969 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:08,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-15 01:13:08,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183166563] [2019-10-15 01:13:08,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:13:08,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:08,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:13:08,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:13:08,972 INFO L87 Difference]: Start difference. First operand 2332 states and 3322 transitions. Second operand 18 states. [2019-10-15 01:13:09,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:09,559 INFO L93 Difference]: Finished difference Result 4055 states and 5752 transitions. [2019-10-15 01:13:09,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 01:13:09,560 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 245 [2019-10-15 01:13:09,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:09,583 INFO L225 Difference]: With dead ends: 4055 [2019-10-15 01:13:09,583 INFO L226 Difference]: Without dead ends: 2514 [2019-10-15 01:13:09,596 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:13:09,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2019-10-15 01:13:09,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2514. [2019-10-15 01:13:09,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2514 states. [2019-10-15 01:13:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3589 transitions. [2019-10-15 01:13:09,764 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3589 transitions. Word has length 245 [2019-10-15 01:13:09,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:09,765 INFO L462 AbstractCegarLoop]: Abstraction has 2514 states and 3589 transitions. [2019-10-15 01:13:09,765 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 01:13:09,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3589 transitions. [2019-10-15 01:13:09,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-15 01:13:09,777 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:09,777 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:09,778 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:09,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:09,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1698334284, now seen corresponding path program 1 times [2019-10-15 01:13:09,778 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:09,778 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287532] [2019-10-15 01:13:09,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:09,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:09,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-15 01:13:09,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287532] [2019-10-15 01:13:09,977 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:09,977 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:13:09,978 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909942785] [2019-10-15 01:13:09,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:13:09,978 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:09,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:13:09,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:13:09,979 INFO L87 Difference]: Start difference. First operand 2514 states and 3589 transitions. Second operand 5 states. [2019-10-15 01:13:11,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:11,494 INFO L93 Difference]: Finished difference Result 6250 states and 8975 transitions. [2019-10-15 01:13:11,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:13:11,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2019-10-15 01:13:11,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:11,531 INFO L225 Difference]: With dead ends: 6250 [2019-10-15 01:13:11,531 INFO L226 Difference]: Without dead ends: 5415 [2019-10-15 01:13:11,539 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:13:11,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5415 states. [2019-10-15 01:13:11,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5415 to 5397. [2019-10-15 01:13:11,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5397 states. [2019-10-15 01:13:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 7750 transitions. [2019-10-15 01:13:11,819 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 7750 transitions. Word has length 245 [2019-10-15 01:13:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:11,820 INFO L462 AbstractCegarLoop]: Abstraction has 5397 states and 7750 transitions. [2019-10-15 01:13:11,820 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:13:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 7750 transitions. [2019-10-15 01:13:11,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-15 01:13:11,836 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:11,836 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:11,837 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:11,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1684084139, now seen corresponding path program 1 times [2019-10-15 01:13:11,837 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:11,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808060199] [2019-10-15 01:13:11,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:11,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:11,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-15 01:13:12,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808060199] [2019-10-15 01:13:12,159 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784087194] [2019-10-15 01:13:12,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:13:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:12,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 3311 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:13:12,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:13:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:13:13,171 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:13:13,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:13:13,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:13:13,767 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:13:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-15 01:13:13,907 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:13:13,907 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:13:13,907 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192039636] [2019-10-15 01:13:13,909 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:13:13,909 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:13,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:13:13,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:13:13,910 INFO L87 Difference]: Start difference. First operand 5397 states and 7750 transitions. Second operand 9 states. [2019-10-15 01:13:16,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:16,020 INFO L93 Difference]: Finished difference Result 10772 states and 15480 transitions. [2019-10-15 01:13:16,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:13:16,021 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 245 [2019-10-15 01:13:16,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:16,063 INFO L225 Difference]: With dead ends: 10772 [2019-10-15 01:13:16,064 INFO L226 Difference]: Without dead ends: 5411 [2019-10-15 01:13:16,091 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 484 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:13:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2019-10-15 01:13:16,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5411. [2019-10-15 01:13:16,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5411 states. [2019-10-15 01:13:16,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 7768 transitions. [2019-10-15 01:13:16,396 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 7768 transitions. Word has length 245 [2019-10-15 01:13:16,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:16,396 INFO L462 AbstractCegarLoop]: Abstraction has 5411 states and 7768 transitions. [2019-10-15 01:13:16,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:13:16,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 7768 transitions. [2019-10-15 01:13:16,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-15 01:13:16,411 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:16,412 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:16,629 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:13:16,629 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:16,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:16,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1955404021, now seen corresponding path program 1 times [2019-10-15 01:13:16,630 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:16,631 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977191241] [2019-10-15 01:13:16,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:16,631 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:16,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-15 01:13:16,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977191241] [2019-10-15 01:13:16,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405700371] [2019-10-15 01:13:16,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:13:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:17,701 INFO L256 TraceCheckSpWp]: Trace formula consists of 3312 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:13:17,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:13:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:13:17,878 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:13:18,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:13:18,411 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:13:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-15 01:13:18,474 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:13:18,474 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:13:18,474 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90618193] [2019-10-15 01:13:18,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:13:18,475 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:18,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:13:18,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:13:18,476 INFO L87 Difference]: Start difference. First operand 5411 states and 7768 transitions. Second operand 7 states.