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_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:16:44,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:16:44,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:16:44,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:16:44,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:16:44,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:16:44,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:16:44,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:16:44,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:16:44,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:16:44,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:16:44,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:16:44,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:16:44,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:16:44,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:16:44,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:16:44,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:16:44,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:16:44,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:16:44,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:16:44,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:16:44,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:16:44,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:16:44,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:16:44,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:16:44,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:16:44,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:16:44,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:16:44,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:16:44,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:16:44,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:16:44,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:16:44,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:16:44,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:16:44,490 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:16:44,491 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:16:44,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:16:44,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:16:44,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:16:44,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:16:44,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:16:44,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:16:44,516 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:16:44,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:16:44,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:16:44,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:16:44,523 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:16:44,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:16:44,523 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:16:44,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:16:44,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:16:44,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:16:44,524 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:16:44,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:16:44,524 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:16:44,525 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:16:44,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:16:44,525 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:16:44,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:16:44,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:16:44,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:16:44,526 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:16:44,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:16:44,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:44,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:16:44,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:16:44,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:16:44,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:16:44,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:16:44,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:16:44,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:16:44,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:16:44,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:16:44,825 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:16:44,827 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:16:44,828 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:16:44,828 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product35.cil.c [2019-10-13 21:16:44,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b3b2f726/589a20b68b0f4bf8b6b5fedce70e0ef2/FLAG66cf8201e [2019-10-13 21:16:45,594 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:16:45,596 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product35.cil.c [2019-10-13 21:16:45,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b3b2f726/589a20b68b0f4bf8b6b5fedce70e0ef2/FLAG66cf8201e [2019-10-13 21:16:45,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b3b2f726/589a20b68b0f4bf8b6b5fedce70e0ef2 [2019-10-13 21:16:45,781 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:16:45,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:16:45,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:45,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:16:45,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:16:45,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:45" (1/1) ... [2019-10-13 21:16:45,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24cdaa22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:45, skipping insertion in model container [2019-10-13 21:16:45,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:45" (1/1) ... [2019-10-13 21:16:45,797 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:16:45,882 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:16:46,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:46,707 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:16:46,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:47,014 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:16:47,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:47 WrapperNode [2019-10-13 21:16:47,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:47,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:16:47,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:16:47,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:16:47,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:47" (1/1) ... [2019-10-13 21:16:47,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:47" (1/1) ... [2019-10-13 21:16:47,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:47" (1/1) ... [2019-10-13 21:16:47,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:47" (1/1) ... [2019-10-13 21:16:47,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:47" (1/1) ... [2019-10-13 21:16:47,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:47" (1/1) ... [2019-10-13 21:16:47,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:47" (1/1) ... [2019-10-13 21:16:47,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:16:47,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:16:47,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:16:47,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:16:47,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:47,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:16:47,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:16:47,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:47,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:16:47,295 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:16:47,296 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:16:47,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:16:47,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:16:47,297 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:16:47,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:16:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:16:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:16:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:16:47,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:16:47,299 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:16:47,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:16:47,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:16:47,302 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:16:47,302 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:16:47,302 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:16:47,302 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:16:47,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:16:47,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:16:47,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:16:47,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:16:47,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:16:47,303 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:16:47,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:16:47,304 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:16:47,304 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:16:47,304 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:16:47,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:16:47,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:16:47,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:16:47,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:16:47,305 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:16:47,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:16:47,305 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:16:47,306 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:16:47,306 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:16:47,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:16:47,306 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:16:47,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:16:47,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:16:47,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:16:47,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:16:47,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:16:47,307 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:16:47,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:16:47,307 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:16:47,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:16:47,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:16:47,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:16:47,308 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:16:47,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:16:47,308 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:16:47,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:16:47,309 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:16:47,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:16:47,309 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:16:47,309 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:47,309 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:16:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:16:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:16:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:16:47,310 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:16:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:16:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:16:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:47,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:16:47,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:16:47,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:16:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:16:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:16:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:16:47,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:16:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:16:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:16:47,314 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:16:47,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:16:47,315 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:16:47,316 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:16:47,317 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:16:47,317 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:16:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:16:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:16:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:16:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:16:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:16:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:16:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:16:47,319 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:16:47,319 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:16:47,319 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:16:47,319 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:16:47,319 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:47,319 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:16:47,319 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:16:47,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:16:47,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:16:47,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:16:47,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:16:47,320 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:16:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:16:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:16:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:16:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:16:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:16:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:16:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:16:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:16:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:16:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:16:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:16:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:16:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:16:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:16:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:16:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:16:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:16:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:16:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:16:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:16:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:16:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:16:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:16:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:16:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:16:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:16:47,327 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:16:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:16:47,328 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:16:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:16:47,331 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:16:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:16:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:16:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:16:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:16:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:16:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:16:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:16:47,340 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:16:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:16:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:16:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:16:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:16:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:16:47,341 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:16:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:16:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:16:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:16:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:16:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:16:47,342 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:16:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:16:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:16:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:16:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:16:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:16:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:16:47,343 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:16:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:16:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:16:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:16:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:16:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:16:47,344 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:16:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:16:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:16:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:16:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:16:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:16:47,345 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:16:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:16:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:16:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:16:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:16:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:16:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:16:47,346 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:16:47,347 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:16:47,347 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:47,347 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:16:47,347 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:16:47,347 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:16:47,347 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:16:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:16:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:16:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:16:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:16:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:16:47,348 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:16:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:16:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:16:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:16:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:16:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:16:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:16:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:16:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:16:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:16:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:16:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:16:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:16:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:16:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:16:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:16:47,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:16:47,352 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:16:47,352 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:16:47,352 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:16:47,352 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:16:47,352 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:16:47,352 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:16:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:16:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:16:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:16:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:16:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:16:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:16:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:16:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:16:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:16:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:16:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:47,354 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:16:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:16:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:16:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:16:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:16:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:16:47,355 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:16:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:16:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:16:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:16:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:16:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:16:47,356 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:16:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:16:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:16:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:16:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:16:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:16:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:16:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:49,568 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:49,568 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:49,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:49 BoogieIcfgContainer [2019-10-13 21:16:49,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:49,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:49,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:49,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:49,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:16:45" (1/3) ... [2019-10-13 21:16:49,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627e492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:49, skipping insertion in model container [2019-10-13 21:16:49,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:47" (2/3) ... [2019-10-13 21:16:49,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627e492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:49, skipping insertion in model container [2019-10-13 21:16:49,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:49" (3/3) ... [2019-10-13 21:16:49,586 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product35.cil.c [2019-10-13 21:16:49,597 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:49,610 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:49,626 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:49,671 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:49,671 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:49,672 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:49,672 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:49,672 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:49,672 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:49,672 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:49,672 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:49,720 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states. [2019-10-13 21:16:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 21:16:49,752 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:49,754 INFO L380 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] [2019-10-13 21:16:49,756 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:49,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:49,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1526735927, now seen corresponding path program 1 times [2019-10-13 21:16:49,773 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:49,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967039622] [2019-10-13 21:16:49,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:49,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:49,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:50,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967039622] [2019-10-13 21:16:50,495 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:50,496 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:50,496 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355327991] [2019-10-13 21:16:50,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:50,503 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:50,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:50,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:50,522 INFO L87 Difference]: Start difference. First operand 683 states. Second operand 2 states. [2019-10-13 21:16:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:50,610 INFO L93 Difference]: Finished difference Result 1041 states and 1401 transitions. [2019-10-13 21:16:50,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:50,612 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 173 [2019-10-13 21:16:50,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:50,640 INFO L225 Difference]: With dead ends: 1041 [2019-10-13 21:16:50,640 INFO L226 Difference]: Without dead ends: 654 [2019-10-13 21:16:50,648 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-10-13 21:16:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2019-10-13 21:16:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 654 states. [2019-10-13 21:16:50,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 886 transitions. [2019-10-13 21:16:50,779 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 886 transitions. Word has length 173 [2019-10-13 21:16:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:50,781 INFO L462 AbstractCegarLoop]: Abstraction has 654 states and 886 transitions. [2019-10-13 21:16:50,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:50,781 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 886 transitions. [2019-10-13 21:16:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 21:16:50,787 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:50,787 INFO L380 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] [2019-10-13 21:16:50,788 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:50,788 INFO L82 PathProgramCache]: Analyzing trace with hash 2124318920, now seen corresponding path program 1 times [2019-10-13 21:16:50,788 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:50,789 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795381255] [2019-10-13 21:16:50,789 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:50,789 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:50,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:51,059 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:51,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795381255] [2019-10-13 21:16:51,060 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:51,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:51,061 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323749583] [2019-10-13 21:16:51,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:51,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:51,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:51,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:51,064 INFO L87 Difference]: Start difference. First operand 654 states and 886 transitions. Second operand 3 states. [2019-10-13 21:16:51,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:51,129 INFO L93 Difference]: Finished difference Result 1024 states and 1366 transitions. [2019-10-13 21:16:51,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:51,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-10-13 21:16:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:51,145 INFO L225 Difference]: With dead ends: 1024 [2019-10-13 21:16:51,146 INFO L226 Difference]: Without dead ends: 657 [2019-10-13 21:16:51,151 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:51,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2019-10-13 21:16:51,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 656. [2019-10-13 21:16:51,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2019-10-13 21:16:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 888 transitions. [2019-10-13 21:16:51,224 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 888 transitions. Word has length 174 [2019-10-13 21:16:51,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:51,225 INFO L462 AbstractCegarLoop]: Abstraction has 656 states and 888 transitions. [2019-10-13 21:16:51,225 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:51,225 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 888 transitions. [2019-10-13 21:16:51,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 21:16:51,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:51,234 INFO L380 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, 1] [2019-10-13 21:16:51,234 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:51,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:51,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1990518153, now seen corresponding path program 1 times [2019-10-13 21:16:51,235 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:51,235 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732038593] [2019-10-13 21:16:51,235 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,235 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:51,426 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:51,426 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732038593] [2019-10-13 21:16:51,427 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:51,427 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:51,427 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372172009] [2019-10-13 21:16:51,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:51,431 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:51,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:51,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:51,431 INFO L87 Difference]: Start difference. First operand 656 states and 888 transitions. Second operand 3 states. [2019-10-13 21:16:51,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:51,490 INFO L93 Difference]: Finished difference Result 1292 states and 1780 transitions. [2019-10-13 21:16:51,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:51,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2019-10-13 21:16:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:51,499 INFO L225 Difference]: With dead ends: 1292 [2019-10-13 21:16:51,499 INFO L226 Difference]: Without dead ends: 701 [2019-10-13 21:16:51,503 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:51,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2019-10-13 21:16:51,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 700. [2019-10-13 21:16:51,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700 states. [2019-10-13 21:16:51,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 963 transitions. [2019-10-13 21:16:51,547 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 963 transitions. Word has length 186 [2019-10-13 21:16:51,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:51,550 INFO L462 AbstractCegarLoop]: Abstraction has 700 states and 963 transitions. [2019-10-13 21:16:51,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:51,550 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 963 transitions. [2019-10-13 21:16:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 21:16:51,557 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:51,558 INFO L380 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, 1, 1] [2019-10-13 21:16:51,558 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:51,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:51,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1349951716, now seen corresponding path program 1 times [2019-10-13 21:16:51,559 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:51,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370690563] [2019-10-13 21:16:51,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:51,825 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370690563] [2019-10-13 21:16:51,825 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:51,826 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:51,826 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034901231] [2019-10-13 21:16:51,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:51,827 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:51,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:51,828 INFO L87 Difference]: Start difference. First operand 700 states and 963 transitions. Second operand 3 states. [2019-10-13 21:16:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:51,877 INFO L93 Difference]: Finished difference Result 1421 states and 2000 transitions. [2019-10-13 21:16:51,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:51,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-10-13 21:16:51,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:51,884 INFO L225 Difference]: With dead ends: 1421 [2019-10-13 21:16:51,884 INFO L226 Difference]: Without dead ends: 786 [2019-10-13 21:16:51,887 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:51,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2019-10-13 21:16:51,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 785. [2019-10-13 21:16:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 785 states. [2019-10-13 21:16:51,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1107 transitions. [2019-10-13 21:16:51,939 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1107 transitions. Word has length 187 [2019-10-13 21:16:51,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:51,940 INFO L462 AbstractCegarLoop]: Abstraction has 785 states and 1107 transitions. [2019-10-13 21:16:51,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:51,940 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1107 transitions. [2019-10-13 21:16:51,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 21:16:51,946 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:51,947 INFO L380 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, 1] [2019-10-13 21:16:51,947 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:51,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:51,948 INFO L82 PathProgramCache]: Analyzing trace with hash 406416016, now seen corresponding path program 1 times [2019-10-13 21:16:51,948 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:51,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968148734] [2019-10-13 21:16:51,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,950 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:52,417 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:52,418 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968148734] [2019-10-13 21:16:52,418 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:52,418 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:16:52,418 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657333895] [2019-10-13 21:16:52,420 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:52,420 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:52,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:52,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:16:52,421 INFO L87 Difference]: Start difference. First operand 785 states and 1107 transitions. Second operand 7 states. [2019-10-13 21:16:56,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:56,513 INFO L93 Difference]: Finished difference Result 1511 states and 2062 transitions. [2019-10-13 21:16:56,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:56,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2019-10-13 21:16:56,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:56,521 INFO L225 Difference]: With dead ends: 1511 [2019-10-13 21:16:56,521 INFO L226 Difference]: Without dead ends: 1155 [2019-10-13 21:16:56,523 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:56,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2019-10-13 21:16:56,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1146. [2019-10-13 21:16:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1146 states. [2019-10-13 21:16:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1581 transitions. [2019-10-13 21:16:56,581 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1581 transitions. Word has length 190 [2019-10-13 21:16:56,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:56,582 INFO L462 AbstractCegarLoop]: Abstraction has 1146 states and 1581 transitions. [2019-10-13 21:16:56,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:56,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1581 transitions. [2019-10-13 21:16:56,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-13 21:16:56,587 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:56,587 INFO L380 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, 1, 1] [2019-10-13 21:16:56,588 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:56,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:56,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1235262333, now seen corresponding path program 1 times [2019-10-13 21:16:56,588 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:56,589 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035625921] [2019-10-13 21:16:56,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:56,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:56,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:57,006 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035625921] [2019-10-13 21:16:57,007 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:57,007 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-10-13 21:16:57,007 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254347254] [2019-10-13 21:16:57,008 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 21:16:57,008 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:57,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 21:16:57,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:16:57,009 INFO L87 Difference]: Start difference. First operand 1146 states and 1581 transitions. Second operand 20 states. [2019-10-13 21:16:57,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:57,628 INFO L93 Difference]: Finished difference Result 1979 states and 2698 transitions. [2019-10-13 21:16:57,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 21:16:57,629 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 191 [2019-10-13 21:16:57,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:57,640 INFO L225 Difference]: With dead ends: 1979 [2019-10-13 21:16:57,640 INFO L226 Difference]: Without dead ends: 1256 [2019-10-13 21:16:57,644 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2019-10-13 21:16:57,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1254. [2019-10-13 21:16:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2019-10-13 21:16:57,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1734 transitions. [2019-10-13 21:16:57,725 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1734 transitions. Word has length 191 [2019-10-13 21:16:57,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:57,726 INFO L462 AbstractCegarLoop]: Abstraction has 1254 states and 1734 transitions. [2019-10-13 21:16:57,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-13 21:16:57,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1734 transitions. [2019-10-13 21:16:57,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 21:16:57,733 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:57,733 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:57,734 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:57,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:57,734 INFO L82 PathProgramCache]: Analyzing trace with hash -528553574, now seen corresponding path program 1 times [2019-10-13 21:16:57,735 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:57,735 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762828827] [2019-10-13 21:16:57,735 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:57,736 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:57,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:57,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762828827] [2019-10-13 21:16:57,991 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:57,991 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:16:57,991 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140270846] [2019-10-13 21:16:57,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:16:57,992 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:57,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:16:57,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:16:57,993 INFO L87 Difference]: Start difference. First operand 1254 states and 1734 transitions. Second operand 8 states. [2019-10-13 21:16:59,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:59,215 INFO L93 Difference]: Finished difference Result 2755 states and 3735 transitions. [2019-10-13 21:16:59,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:59,216 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 200 [2019-10-13 21:16:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:59,242 INFO L225 Difference]: With dead ends: 2755 [2019-10-13 21:16:59,243 INFO L226 Difference]: Without dead ends: 2124 [2019-10-13 21:16:59,247 INFO L600 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 [2019-10-13 21:16:59,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2019-10-13 21:16:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2105. [2019-10-13 21:16:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2105 states. [2019-10-13 21:16:59,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 2875 transitions. [2019-10-13 21:16:59,381 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 2875 transitions. Word has length 200 [2019-10-13 21:16:59,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:59,383 INFO L462 AbstractCegarLoop]: Abstraction has 2105 states and 2875 transitions. [2019-10-13 21:16:59,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:16:59,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 2875 transitions. [2019-10-13 21:16:59,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:16:59,389 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:59,389 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:59,390 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:59,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:59,390 INFO L82 PathProgramCache]: Analyzing trace with hash -398855595, now seen corresponding path program 1 times [2019-10-13 21:16:59,390 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:59,390 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425443076] [2019-10-13 21:16:59,391 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:59,391 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:59,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:59,791 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425443076] [2019-10-13 21:16:59,791 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:59,791 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 21:16:59,792 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689314764] [2019-10-13 21:16:59,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:16:59,793 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:59,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:16:59,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:16:59,794 INFO L87 Difference]: Start difference. First operand 2105 states and 2875 transitions. Second operand 19 states. [2019-10-13 21:17:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:00,837 INFO L93 Difference]: Finished difference Result 2920 states and 3961 transitions. [2019-10-13 21:17:00,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 21:17:00,838 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 201 [2019-10-13 21:17:00,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:00,850 INFO L225 Difference]: With dead ends: 2920 [2019-10-13 21:17:00,851 INFO L226 Difference]: Without dead ends: 2104 [2019-10-13 21:17:00,855 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:17:00,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2104 states. [2019-10-13 21:17:00,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2104 to 2103. [2019-10-13 21:17:00,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2103 states. [2019-10-13 21:17:00,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 2870 transitions. [2019-10-13 21:17:00,949 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 2870 transitions. Word has length 201 [2019-10-13 21:17:00,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:00,949 INFO L462 AbstractCegarLoop]: Abstraction has 2103 states and 2870 transitions. [2019-10-13 21:17:00,950 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:17:00,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 2870 transitions. [2019-10-13 21:17:00,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:17:00,955 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:00,955 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:00,955 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:00,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:00,956 INFO L82 PathProgramCache]: Analyzing trace with hash -942439337, now seen corresponding path program 2 times [2019-10-13 21:17:00,956 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:00,956 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720301023] [2019-10-13 21:17:00,956 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:00,956 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:00,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:01,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:17:01,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720301023] [2019-10-13 21:17:01,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849970771] [2019-10-13 21:17:01,179 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 [2019-10-13 21:17:01,744 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:17:01,744 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:17:01,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 21:17:01,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:17:02,043 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:17:02,044 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:17:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:17:02,567 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:17:02,567 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-13 21:17:02,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118953379] [2019-10-13 21:17:02,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:17:02,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:02,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:17:02,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:17:02,570 INFO L87 Difference]: Start difference. First operand 2103 states and 2870 transitions. Second operand 14 states. [2019-10-13 21:17:05,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:05,912 INFO L93 Difference]: Finished difference Result 6281 states and 8621 transitions. [2019-10-13 21:17:05,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:17:05,913 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 201 [2019-10-13 21:17:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:05,973 INFO L225 Difference]: With dead ends: 6281 [2019-10-13 21:17:05,973 INFO L226 Difference]: Without dead ends: 6278 [2019-10-13 21:17:05,981 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 396 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:17:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6278 states. [2019-10-13 21:17:06,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6278 to 4561. [2019-10-13 21:17:06,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4561 states. [2019-10-13 21:17:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4561 states to 4561 states and 6344 transitions. [2019-10-13 21:17:06,359 INFO L78 Accepts]: Start accepts. Automaton has 4561 states and 6344 transitions. Word has length 201 [2019-10-13 21:17:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:06,361 INFO L462 AbstractCegarLoop]: Abstraction has 4561 states and 6344 transitions. [2019-10-13 21:17:06,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:17:06,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4561 states and 6344 transitions. [2019-10-13 21:17:06,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:17:06,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:06,375 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:06,582 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:06,582 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:06,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:06,583 INFO L82 PathProgramCache]: Analyzing trace with hash 522610599, now seen corresponding path program 1 times [2019-10-13 21:17:06,583 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:06,584 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134326058] [2019-10-13 21:17:06,584 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:06,584 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:06,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:17:06,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134326058] [2019-10-13 21:17:06,945 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447823734] [2019-10-13 21:17:06,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:07,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 3046 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:17:07,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:17:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:17:07,946 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:17:08,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:17:08,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:08,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 21:17:08,581 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:17:08,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-10-13 21:17:08,581 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605504793] [2019-10-13 21:17:08,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:17:08,582 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:08,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:17:08,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:17:08,583 INFO L87 Difference]: Start difference. First operand 4561 states and 6344 transitions. Second operand 9 states. [2019-10-13 21:17:11,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:11,472 INFO L93 Difference]: Finished difference Result 9096 states and 12662 transitions. [2019-10-13 21:17:11,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:17:11,473 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2019-10-13 21:17:11,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:11,501 INFO L225 Difference]: With dead ends: 9096 [2019-10-13 21:17:11,501 INFO L226 Difference]: Without dead ends: 4579 [2019-10-13 21:17:11,519 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 390 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:17:11,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2019-10-13 21:17:11,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 4579. [2019-10-13 21:17:11,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4579 states. [2019-10-13 21:17:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 6365 transitions. [2019-10-13 21:17:11,797 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 6365 transitions. Word has length 203 [2019-10-13 21:17:11,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:11,798 INFO L462 AbstractCegarLoop]: Abstraction has 4579 states and 6365 transitions. [2019-10-13 21:17:11,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:17:11,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 6365 transitions. [2019-10-13 21:17:11,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:17:11,818 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:11,818 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:12,026 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:12,027 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:12,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:12,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1287740052, now seen corresponding path program 1 times [2019-10-13 21:17:12,029 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:12,029 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900329624] [2019-10-13 21:17:12,029 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:12,029 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:12,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:17:12,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900329624] [2019-10-13 21:17:12,298 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357437212] [2019-10-13 21:17:12,298 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 [2019-10-13 21:17:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:13,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:17:13,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:17:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:17:13,504 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:17:13,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:13,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:13,943 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:17:13,944 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:17:13,944 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-10-13 21:17:13,944 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128997759] [2019-10-13 21:17:13,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:17:13,946 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:13,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:17:13,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:17:13,947 INFO L87 Difference]: Start difference. First operand 4579 states and 6365 transitions. Second operand 7 states. [2019-10-13 21:17:15,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:15,348 INFO L93 Difference]: Finished difference Result 9066 states and 12623 transitions. [2019-10-13 21:17:15,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:17:15,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2019-10-13 21:17:15,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:15,377 INFO L225 Difference]: With dead ends: 9066 [2019-10-13 21:17:15,377 INFO L226 Difference]: Without dead ends: 4579 [2019-10-13 21:17:15,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 397 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:17:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2019-10-13 21:17:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 4579. [2019-10-13 21:17:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4579 states. [2019-10-13 21:17:15,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 6351 transitions. [2019-10-13 21:17:15,606 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 6351 transitions. Word has length 204 [2019-10-13 21:17:15,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:15,606 INFO L462 AbstractCegarLoop]: Abstraction has 4579 states and 6351 transitions. [2019-10-13 21:17:15,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:17:15,607 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 6351 transitions. [2019-10-13 21:17:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:17:15,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:15,621 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:15,828 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:15,829 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:15,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:15,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2132684998, now seen corresponding path program 1 times [2019-10-13 21:17:15,830 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:15,830 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592212633] [2019-10-13 21:17:15,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:15,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:15,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:17:16,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592212633] [2019-10-13 21:17:16,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417460703] [2019-10-13 21:17:16,049 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