/usr/bin/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_spec4_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:52:16,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:52:16,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:52:16,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:52:16,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:52:16,206 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:52:16,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:52:16,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:52:16,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:52:16,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:52:16,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:52:16,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:52:16,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:52:16,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:52:16,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:52:16,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:52:16,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:52:16,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:52:16,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:52:16,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:52:16,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:52:16,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:52:16,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:52:16,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:52:16,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:52:16,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:52:16,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:52:16,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:52:16,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:52:16,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:52:16,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:52:16,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:52:16,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:52:16,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:52:16,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:52:16,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:52:16,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:52:16,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:52:16,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:52:16,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:52:16,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:52:16,259 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 [2019-11-07 00:52:16,283 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:52:16,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:52:16,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:52:16,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:52:16,286 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:52:16,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:52:16,287 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:52:16,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:52:16,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:52:16,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:52:16,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:52:16,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:52:16,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:52:16,289 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:52:16,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:52:16,289 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:52:16,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:52:16,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:52:16,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:52:16,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:52:16,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:52:16,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:16,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:52:16,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:52:16,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:52:16,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:52:16,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:52:16,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:52:16,292 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 [2019-11-07 00:52:16,562 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:52:16,584 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:52:16,587 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:52:16,589 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:52:16,589 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:52:16,590 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product27.cil.c [2019-11-07 00:52:16,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/520e287b9/8dd56cf51a064feda3de7aa6c86abc70/FLAG9e4e89c4f [2019-11-07 00:52:17,291 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:52:17,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product27.cil.c [2019-11-07 00:52:17,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/520e287b9/8dd56cf51a064feda3de7aa6c86abc70/FLAG9e4e89c4f [2019-11-07 00:52:17,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/520e287b9/8dd56cf51a064feda3de7aa6c86abc70 [2019-11-07 00:52:17,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:52:17,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:52:17,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:17,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:52:17,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:52:17,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:17" (1/1) ... [2019-11-07 00:52:17,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612b7718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:17, skipping insertion in model container [2019-11-07 00:52:17,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:17" (1/1) ... [2019-11-07 00:52:17,501 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:52:17,577 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:52:18,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:18,451 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:52:18,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:18,707 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:52:18,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:18 WrapperNode [2019-11-07 00:52:18,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:18,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:52:18,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:52:18,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:52:18,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:18" (1/1) ... [2019-11-07 00:52:18,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:18" (1/1) ... [2019-11-07 00:52:18,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:18" (1/1) ... [2019-11-07 00:52:18,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:18" (1/1) ... [2019-11-07 00:52:18,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:18" (1/1) ... [2019-11-07 00:52:18,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:18" (1/1) ... [2019-11-07 00:52:18,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:18" (1/1) ... [2019-11-07 00:52:18,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:52:18,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:52:18,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:52:18,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:52:18,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:18" (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 [2019-11-07 00:52:18,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:52:18,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:52:18,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:18,968 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:52:18,968 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:52:18,969 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:52:18,969 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:52:18,970 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:52:18,970 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:52:18,971 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:52:18,971 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:52:18,971 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:52:18,971 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:52:18,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:52:18,972 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:52:18,972 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:52:18,974 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:52:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:52:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:52:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:52:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:52:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:52:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:52:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:52:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:52:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:52:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:52:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:52:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:52:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:52:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:52:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:52:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:52:18,978 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:52:18,978 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:52:18,978 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:52:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:52:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:52:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:52:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:52:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:52:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:52:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:52:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:52:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:52:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:52:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:52:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:52:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:52:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:52:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:52:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:52:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:52:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:52:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:52:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:52:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:52:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:52:18,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:52:18,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:52:18,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:52:18,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:52:18,983 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:52:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:52:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:52:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:52:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:52:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:52:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:52:18,986 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:52:18,986 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:52:18,987 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:18,987 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:52:18,987 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:18,987 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:52:18,987 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:52:18,988 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:52:18,988 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:52:18,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:52:18,989 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:52:18,989 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:52:18,989 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:52:18,990 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:52:18,990 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:52:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:52:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:52:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:52:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:52:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:52:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:52:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:52:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:52:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:52:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:52:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:52:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:52:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-11-07 00:52:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:52:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:52:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:52:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:52:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:52:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:52:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:52:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:52:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:52:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:52:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:52:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:52:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:52:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:52:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:52:18,995 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:52:18,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:18,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:52:18,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:52:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:52:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:52:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:52:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:52:18,996 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:52:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:52:18,997 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:52:18,998 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:52:18,998 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:52:18,998 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:52:18,998 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:52:18,998 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:52:18,999 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:52:18,999 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:52:18,999 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:52:18,999 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:52:19,000 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:52:19,001 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:52:19,003 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:52:19,004 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:52:19,004 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:52:19,004 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:52:19,005 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:52:19,005 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:52:19,005 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:52:19,012 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:52:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:52:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:52:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:52:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:52:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:52:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:52:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:52:19,013 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:52:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:52:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:52:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:52:19,014 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:52:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:52:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:52:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:52:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:52:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:52:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:52:19,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:52:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:52:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:52:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:52:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:52:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:52:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:52:19,016 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:52:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:52:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:52:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:52:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:52:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:52:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:52:19,017 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:52:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:52:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:52:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:52:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:52:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:52:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:52:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:52:19,018 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:52:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:52:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:52:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:52:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:52:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:52:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:52:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:52:19,019 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:52:19,020 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:52:19,020 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:52:19,020 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:52:19,020 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:52:19,020 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:19,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:52:19,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:52:19,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:52:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:52:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:52:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:52:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:52:19,021 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:52:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:52:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:52:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:52:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:52:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:52:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:52:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:52:19,022 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:52:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:52:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:52:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:52:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:52:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:52:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:52:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:52:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:52:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:52:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:52:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:52:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:52:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:52:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:52:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:52:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:52:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:52:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:52:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:52:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:52:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:19,026 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:52:19,026 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:52:19,026 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-11-07 00:52:19,026 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:52:19,026 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:52:19,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:52:19,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:52:19,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:52:21,091 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:52:21,091 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:52:21,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:21 BoogieIcfgContainer [2019-11-07 00:52:21,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:52:21,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:52:21,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:52:21,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:52:21,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:17" (1/3) ... [2019-11-07 00:52:21,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d72b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:21, skipping insertion in model container [2019-11-07 00:52:21,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:18" (2/3) ... [2019-11-07 00:52:21,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19d72b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:21, skipping insertion in model container [2019-11-07 00:52:21,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:21" (3/3) ... [2019-11-07 00:52:21,102 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product27.cil.c [2019-11-07 00:52:21,112 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:52:21,124 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:52:21,140 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:52:21,177 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:52:21,177 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:52:21,177 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:52:21,178 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:52:21,178 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:52:21,178 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:52:21,178 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:52:21,180 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:52:21,222 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states. [2019-11-07 00:52:21,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-07 00:52:21,245 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:21,246 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:21,248 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:21,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:21,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1321708058, now seen corresponding path program 1 times [2019-11-07 00:52:21,265 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:21,265 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168154392] [2019-11-07 00:52:21,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:21,963 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168154392] [2019-11-07 00:52:21,964 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:21,965 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:52:21,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179102802] [2019-11-07 00:52:21,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:52:21,974 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:21,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:52:21,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:21,992 INFO L87 Difference]: Start difference. First operand 619 states. Second operand 2 states. [2019-11-07 00:52:22,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:22,105 INFO L93 Difference]: Finished difference Result 913 states and 1228 transitions. [2019-11-07 00:52:22,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:52:22,107 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-11-07 00:52:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:22,145 INFO L225 Difference]: With dead ends: 913 [2019-11-07 00:52:22,145 INFO L226 Difference]: Without dead ends: 590 [2019-11-07 00:52:22,157 INFO L630 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 [2019-11-07 00:52:22,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-11-07 00:52:22,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2019-11-07 00:52:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-11-07 00:52:22,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 800 transitions. [2019-11-07 00:52:22,282 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 800 transitions. Word has length 157 [2019-11-07 00:52:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:22,284 INFO L462 AbstractCegarLoop]: Abstraction has 590 states and 800 transitions. [2019-11-07 00:52:22,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:52:22,284 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 800 transitions. [2019-11-07 00:52:22,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-11-07 00:52:22,291 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:22,292 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:22,292 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:22,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:22,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1215035645, now seen corresponding path program 1 times [2019-11-07 00:52:22,293 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:22,293 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553257211] [2019-11-07 00:52:22,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:22,599 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553257211] [2019-11-07 00:52:22,600 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:22,600 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:22,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796902117] [2019-11-07 00:52:22,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:22,618 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:22,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:22,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:22,619 INFO L87 Difference]: Start difference. First operand 590 states and 800 transitions. Second operand 3 states. [2019-11-07 00:52:22,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:22,744 INFO L93 Difference]: Finished difference Result 896 states and 1194 transitions. [2019-11-07 00:52:22,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:22,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-11-07 00:52:22,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:22,756 INFO L225 Difference]: With dead ends: 896 [2019-11-07 00:52:22,756 INFO L226 Difference]: Without dead ends: 593 [2019-11-07 00:52:22,758 INFO L630 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 [2019-11-07 00:52:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-11-07 00:52:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 592. [2019-11-07 00:52:22,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-11-07 00:52:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 802 transitions. [2019-11-07 00:52:22,810 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 802 transitions. Word has length 158 [2019-11-07 00:52:22,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:22,811 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 802 transitions. [2019-11-07 00:52:22,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:22,811 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 802 transitions. [2019-11-07 00:52:22,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-11-07 00:52:22,815 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:22,815 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:22,816 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:22,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1817662030, now seen corresponding path program 1 times [2019-11-07 00:52:22,817 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:22,817 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799156817] [2019-11-07 00:52:22,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:22,977 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799156817] [2019-11-07 00:52:22,977 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:22,977 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:22,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600178952] [2019-11-07 00:52:22,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:22,981 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:22,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:22,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:22,982 INFO L87 Difference]: Start difference. First operand 592 states and 802 transitions. Second operand 3 states. [2019-11-07 00:52:23,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:23,033 INFO L93 Difference]: Finished difference Result 1164 states and 1608 transitions. [2019-11-07 00:52:23,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:23,034 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-11-07 00:52:23,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:23,039 INFO L225 Difference]: With dead ends: 1164 [2019-11-07 00:52:23,039 INFO L226 Difference]: Without dead ends: 637 [2019-11-07 00:52:23,041 INFO L630 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 [2019-11-07 00:52:23,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-11-07 00:52:23,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 636. [2019-11-07 00:52:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-11-07 00:52:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 877 transitions. [2019-11-07 00:52:23,070 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 877 transitions. Word has length 170 [2019-11-07 00:52:23,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:23,070 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 877 transitions. [2019-11-07 00:52:23,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:23,071 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 877 transitions. [2019-11-07 00:52:23,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 00:52:23,075 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:23,075 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:23,076 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:23,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:23,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1202923283, now seen corresponding path program 1 times [2019-11-07 00:52:23,076 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:23,076 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647321927] [2019-11-07 00:52:23,077 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:23,287 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647321927] [2019-11-07 00:52:23,287 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:23,288 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:23,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190479990] [2019-11-07 00:52:23,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:23,290 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:23,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:23,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:23,291 INFO L87 Difference]: Start difference. First operand 636 states and 877 transitions. Second operand 3 states. [2019-11-07 00:52:23,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:23,359 INFO L93 Difference]: Finished difference Result 1293 states and 1828 transitions. [2019-11-07 00:52:23,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:23,359 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-11-07 00:52:23,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:23,370 INFO L225 Difference]: With dead ends: 1293 [2019-11-07 00:52:23,370 INFO L226 Difference]: Without dead ends: 722 [2019-11-07 00:52:23,373 INFO L630 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 [2019-11-07 00:52:23,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2019-11-07 00:52:23,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 721. [2019-11-07 00:52:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2019-11-07 00:52:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1021 transitions. [2019-11-07 00:52:23,431 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1021 transitions. Word has length 171 [2019-11-07 00:52:23,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:23,433 INFO L462 AbstractCegarLoop]: Abstraction has 721 states and 1021 transitions. [2019-11-07 00:52:23,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1021 transitions. [2019-11-07 00:52:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 00:52:23,440 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:23,440 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:23,441 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:23,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:23,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1280448012, now seen corresponding path program 1 times [2019-11-07 00:52:23,441 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:23,442 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416219153] [2019-11-07 00:52:23,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:23,781 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416219153] [2019-11-07 00:52:23,782 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:23,782 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:52:23,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235664558] [2019-11-07 00:52:23,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:23,783 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:23,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:23,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:52:23,784 INFO L87 Difference]: Start difference. First operand 721 states and 1021 transitions. Second operand 7 states. [2019-11-07 00:52:27,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:27,431 INFO L93 Difference]: Finished difference Result 1319 states and 1803 transitions. [2019-11-07 00:52:27,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:52:27,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2019-11-07 00:52:27,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:27,437 INFO L225 Difference]: With dead ends: 1319 [2019-11-07 00:52:27,438 INFO L226 Difference]: Without dead ends: 1027 [2019-11-07 00:52:27,439 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-11-07 00:52:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1018. [2019-11-07 00:52:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2019-11-07 00:52:27,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1409 transitions. [2019-11-07 00:52:27,492 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1409 transitions. Word has length 174 [2019-11-07 00:52:27,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:27,493 INFO L462 AbstractCegarLoop]: Abstraction has 1018 states and 1409 transitions. [2019-11-07 00:52:27,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1409 transitions. [2019-11-07 00:52:27,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-07 00:52:27,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:27,498 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:27,498 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:27,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:27,498 INFO L82 PathProgramCache]: Analyzing trace with hash -285515108, now seen corresponding path program 1 times [2019-11-07 00:52:27,499 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:27,499 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941673596] [2019-11-07 00:52:27,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:27,829 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941673596] [2019-11-07 00:52:27,830 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:27,830 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-11-07 00:52:27,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345246250] [2019-11-07 00:52:27,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 00:52:27,831 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:27,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 00:52:27,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:52:27,832 INFO L87 Difference]: Start difference. First operand 1018 states and 1409 transitions. Second operand 18 states. [2019-11-07 00:52:28,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:28,394 INFO L93 Difference]: Finished difference Result 1701 states and 2320 transitions. [2019-11-07 00:52:28,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-07 00:52:28,394 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 175 [2019-11-07 00:52:28,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:28,401 INFO L225 Difference]: With dead ends: 1701 [2019-11-07 00:52:28,401 INFO L226 Difference]: Without dead ends: 1106 [2019-11-07 00:52:28,404 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:52:28,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2019-11-07 00:52:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1104. [2019-11-07 00:52:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2019-11-07 00:52:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1530 transitions. [2019-11-07 00:52:28,458 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1530 transitions. Word has length 175 [2019-11-07 00:52:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:28,459 INFO L462 AbstractCegarLoop]: Abstraction has 1104 states and 1530 transitions. [2019-11-07 00:52:28,459 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-07 00:52:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1530 transitions. [2019-11-07 00:52:28,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-11-07 00:52:28,464 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:28,464 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:28,464 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:28,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:28,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1555376384, now seen corresponding path program 1 times [2019-11-07 00:52:28,465 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:28,465 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253070510] [2019-11-07 00:52:28,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:28,681 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253070510] [2019-11-07 00:52:28,682 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:28,682 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:52:28,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716081949] [2019-11-07 00:52:28,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:52:28,683 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:28,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:52:28,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:52:28,688 INFO L87 Difference]: Start difference. First operand 1104 states and 1530 transitions. Second operand 8 states. [2019-11-07 00:52:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:29,747 INFO L93 Difference]: Finished difference Result 2327 states and 3151 transitions. [2019-11-07 00:52:29,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:29,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2019-11-07 00:52:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:29,771 INFO L225 Difference]: With dead ends: 2327 [2019-11-07 00:52:29,771 INFO L226 Difference]: Without dead ends: 1824 [2019-11-07 00:52:29,776 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:29,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2019-11-07 00:52:29,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1805. [2019-11-07 00:52:29,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2019-11-07 00:52:29,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2463 transitions. [2019-11-07 00:52:29,925 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2463 transitions. Word has length 184 [2019-11-07 00:52:29,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:29,928 INFO L462 AbstractCegarLoop]: Abstraction has 1805 states and 2463 transitions. [2019-11-07 00:52:29,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:52:29,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2463 transitions. [2019-11-07 00:52:29,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-11-07 00:52:29,937 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:29,937 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:29,937 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:29,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:29,938 INFO L82 PathProgramCache]: Analyzing trace with hash 266069784, now seen corresponding path program 1 times [2019-11-07 00:52:29,938 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:29,939 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871361172] [2019-11-07 00:52:29,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:30,438 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:30,439 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871361172] [2019-11-07 00:52:30,439 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:30,439 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-11-07 00:52:30,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603798861] [2019-11-07 00:52:30,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-07 00:52:30,440 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:30,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-07 00:52:30,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-11-07 00:52:30,441 INFO L87 Difference]: Start difference. First operand 1805 states and 2463 transitions. Second operand 17 states. [2019-11-07 00:52:31,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:31,231 INFO L93 Difference]: Finished difference Result 2470 states and 3341 transitions. [2019-11-07 00:52:31,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 00:52:31,232 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 185 [2019-11-07 00:52:31,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:31,248 INFO L225 Difference]: With dead ends: 2470 [2019-11-07 00:52:31,248 INFO L226 Difference]: Without dead ends: 1804 [2019-11-07 00:52:31,253 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:52:31,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2019-11-07 00:52:31,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1803. [2019-11-07 00:52:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1803 states. [2019-11-07 00:52:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2458 transitions. [2019-11-07 00:52:31,376 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2458 transitions. Word has length 185 [2019-11-07 00:52:31,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:31,377 INFO L462 AbstractCegarLoop]: Abstraction has 1803 states and 2458 transitions. [2019-11-07 00:52:31,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-07 00:52:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2458 transitions. [2019-11-07 00:52:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-11-07 00:52:31,386 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:31,387 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:31,387 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:31,388 INFO L82 PathProgramCache]: Analyzing trace with hash -2118439478, now seen corresponding path program 2 times [2019-11-07 00:52:31,388 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:31,388 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116695113] [2019-11-07 00:52:31,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:31,768 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:31,769 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116695113] [2019-11-07 00:52:31,770 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054233354] [2019-11-07 00:52:31,770 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-11-07 00:52:32,354 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:52:32,354 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:32,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 00:52:32,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:32,642 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:33,228 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:33,229 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-11-07 00:52:33,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89148437] [2019-11-07 00:52:33,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:52:33,231 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:33,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:52:33,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:33,232 INFO L87 Difference]: Start difference. First operand 1803 states and 2458 transitions. Second operand 14 states. [2019-11-07 00:52:36,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:36,109 INFO L93 Difference]: Finished difference Result 5381 states and 7385 transitions. [2019-11-07 00:52:36,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:52:36,110 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 185 [2019-11-07 00:52:36,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:36,147 INFO L225 Difference]: With dead ends: 5381 [2019-11-07 00:52:36,147 INFO L226 Difference]: Without dead ends: 5378 [2019-11-07 00:52:36,153 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 364 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:52:36,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2019-11-07 00:52:36,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 3961. [2019-11-07 00:52:36,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3961 states. [2019-11-07 00:52:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 5520 transitions. [2019-11-07 00:52:36,534 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 5520 transitions. Word has length 185 [2019-11-07 00:52:36,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:36,536 INFO L462 AbstractCegarLoop]: Abstraction has 3961 states and 5520 transitions. [2019-11-07 00:52:36,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:52:36,537 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 5520 transitions. [2019-11-07 00:52:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-11-07 00:52:36,553 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:36,554 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:36,771 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:36,771 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:36,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:36,772 INFO L82 PathProgramCache]: Analyzing trace with hash 416767069, now seen corresponding path program 1 times [2019-11-07 00:52:36,772 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:36,773 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112106056] [2019-11-07 00:52:36,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-07 00:52:37,041 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112106056] [2019-11-07 00:52:37,041 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810927607] [2019-11-07 00:52:37,041 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 [2019-11-07 00:52:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:37,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 2780 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:37,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:38,089 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 00:52:38,089 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:38,427 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:38,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:38,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:38,701 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 00:52:38,702 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:38,702 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-11-07 00:52:38,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212586096] [2019-11-07 00:52:38,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:52:38,705 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:38,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:52:38,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-11-07 00:52:38,706 INFO L87 Difference]: Start difference. First operand 3961 states and 5520 transitions. Second operand 9 states. [2019-11-07 00:52:40,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:40,390 INFO L93 Difference]: Finished difference Result 7896 states and 11014 transitions. [2019-11-07 00:52:40,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:52:40,390 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-11-07 00:52:40,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:40,414 INFO L225 Difference]: With dead ends: 7896 [2019-11-07 00:52:40,414 INFO L226 Difference]: Without dead ends: 3979 [2019-11-07 00:52:40,429 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-11-07 00:52:40,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2019-11-07 00:52:40,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3979. [2019-11-07 00:52:40,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3979 states. [2019-11-07 00:52:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5541 transitions. [2019-11-07 00:52:40,655 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5541 transitions. Word has length 187 [2019-11-07 00:52:40,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:40,656 INFO L462 AbstractCegarLoop]: Abstraction has 3979 states and 5541 transitions. [2019-11-07 00:52:40,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:52:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5541 transitions. [2019-11-07 00:52:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-11-07 00:52:40,668 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:40,668 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:40,876 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:40,876 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:40,877 INFO L82 PathProgramCache]: Analyzing trace with hash 600188279, now seen corresponding path program 1 times [2019-11-07 00:52:40,877 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:40,878 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856845198] [2019-11-07 00:52:40,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-11-07 00:52:41,162 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856845198] [2019-11-07 00:52:41,163 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854058840] [2019-11-07 00:52:41,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:41,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:41,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 2781 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:41,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-11-07 00:52:42,204 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:42,473 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:42,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:52:42,583 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:42,583 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-11-07 00:52:42,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088461536] [2019-11-07 00:52:42,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:42,585 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:42,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:42,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:52:42,585 INFO L87 Difference]: Start difference. First operand 3979 states and 5541 transitions. Second operand 7 states. [2019-11-07 00:52:43,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:43,857 INFO L93 Difference]: Finished difference Result 7866 states and 10975 transitions. [2019-11-07 00:52:43,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:52:43,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2019-11-07 00:52:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:43,882 INFO L225 Difference]: With dead ends: 7866 [2019-11-07 00:52:43,882 INFO L226 Difference]: Without dead ends: 3979 [2019-11-07 00:52:43,897 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 365 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-11-07 00:52:43,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2019-11-07 00:52:44,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3979. [2019-11-07 00:52:44,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3979 states. [2019-11-07 00:52:44,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5527 transitions. [2019-11-07 00:52:44,113 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5527 transitions. Word has length 188 [2019-11-07 00:52:44,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:44,113 INFO L462 AbstractCegarLoop]: Abstraction has 3979 states and 5527 transitions. [2019-11-07 00:52:44,113 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:44,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5527 transitions. [2019-11-07 00:52:44,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-07 00:52:44,129 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:44,130 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:44,340 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:44,340 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:44,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:44,341 INFO L82 PathProgramCache]: Analyzing trace with hash -418340196, now seen corresponding path program 1 times [2019-11-07 00:52:44,341 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:44,341 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829901832] [2019-11-07 00:52:44,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:44,543 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:44,544 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829901832] [2019-11-07 00:52:44,544 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171462577] [2019-11-07 00:52:44,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:45,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:45,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:45,395 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:45,396 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:45,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:45,814 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:45,853 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:45,854 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:52:45,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501094369] [2019-11-07 00:52:45,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:45,855 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:45,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:45,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:45,855 INFO L87 Difference]: Start difference. First operand 3979 states and 5527 transitions. Second operand 7 states.