/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:49:33,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:49:33,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:49:33,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:49:33,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:49:33,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:49:33,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:49:33,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:49:33,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:49:33,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:49:33,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:49:33,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:49:33,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:49:33,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:49:33,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:49:33,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:49:33,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:49:33,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:49:33,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:49:33,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:49:33,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:49:33,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:49:33,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:49:33,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:49:33,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:49:33,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:49:33,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:49:33,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:49:33,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:49:33,499 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:49:33,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:49:33,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:49:33,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:49:33,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:49:33,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:49:33,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:49:33,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:49:33,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:49:33,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:49:33,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:49:33,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:49:33,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:49:33,533 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:49:33,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:49:33,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:49:33,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:49:33,535 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:49:33,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:49:33,536 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:49:33,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:49:33,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:49:33,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:49:33,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:49:33,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:49:33,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:49:33,538 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:49:33,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:49:33,538 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:49:33,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:49:33,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:49:33,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:49:33,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:49:33,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:49:33,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:49:33,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:49:33,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:49:33,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:49:33,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:49:33,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:49:33,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:49:33,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:49:33,831 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:49:33,844 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:49:33,848 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:49:33,849 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:49:33,850 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:49:33,851 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product25.cil.c [2019-11-07 00:49:33,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fac7ccdf/d2094c792cad4edab0ac800bf8c5de8b/FLAG4af0b0372 [2019-11-07 00:49:34,537 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:49:34,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product25.cil.c [2019-11-07 00:49:34,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fac7ccdf/d2094c792cad4edab0ac800bf8c5de8b/FLAG4af0b0372 [2019-11-07 00:49:34,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fac7ccdf/d2094c792cad4edab0ac800bf8c5de8b [2019-11-07 00:49:34,799 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:49:34,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:49:34,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:34,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:49:34,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:49:34,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:34" (1/1) ... [2019-11-07 00:49:34,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf0de87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:34, skipping insertion in model container [2019-11-07 00:49:34,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:34" (1/1) ... [2019-11-07 00:49:34,855 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:49:34,980 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:49:35,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:35,758 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:49:35,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:35,987 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:49:35,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:35 WrapperNode [2019-11-07 00:49:35,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:35,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:49:35,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:49:35,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:49:36,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:35" (1/1) ... [2019-11-07 00:49:36,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:35" (1/1) ... [2019-11-07 00:49:36,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:35" (1/1) ... [2019-11-07 00:49:36,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:35" (1/1) ... [2019-11-07 00:49:36,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:35" (1/1) ... [2019-11-07 00:49:36,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:35" (1/1) ... [2019-11-07 00:49:36,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:35" (1/1) ... [2019-11-07 00:49:36,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:49:36,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:49:36,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:49:36,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:49:36,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:49:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:49:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:49:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:49:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:49:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:49:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:49:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:49:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:49:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:49:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:49:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:49:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:49:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:49:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:49:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:49:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:49:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:49:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:49:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:49:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:49:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:49:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:49:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:49:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:49:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:49:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:49:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:49:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:49:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:49:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:49:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:49:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:49:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:49:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:49:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:49:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:49:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:49:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:49:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:49:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:49:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:49:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:49:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:49:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:49:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:49:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:49:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:49:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:49:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:49:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:49:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:49:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:49:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:49:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:49:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:49:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:49:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:49:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:49:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:49:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:49:36,225 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:49:36,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:49:36,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:49:36,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:49:36,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:49:36,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:49:36,227 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:49:36,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:49:36,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:49:36,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:49:36,227 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:49:36,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:49:36,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:49:36,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:49:36,228 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:49:36,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:49:36,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:49:36,229 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:49:36,229 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:49:36,229 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:49:36,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:36,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:49:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:49:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:49:36,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:49:36,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:49:36,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:49:36,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:36,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:49:36,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:36,232 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:49:36,232 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:49:36,232 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:49:36,232 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:49:36,232 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:49:36,233 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:49:36,233 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:49:36,233 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:49:36,233 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:49:36,233 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:49:36,233 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:49:36,234 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:49:36,234 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:49:36,234 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:49:36,234 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:49:36,234 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:49:36,234 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:49:36,235 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:49:36,235 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:49:36,235 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:49:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:49:36,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:49:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:49:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:49:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:49:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:49:36,236 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:49:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:49:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:49:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:49:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:49:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:49:36,237 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:49:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:49:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:49:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:49:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:49:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:49:36,238 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:49:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:49:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:49:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:49:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:49:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:49:36,239 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:49:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:49:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:49:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:49:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:49:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:49:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:49:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:49:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:49:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:49:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:49:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:49:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:49:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:49:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:49:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:49:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:49:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:49:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:49:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:49:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:49:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:49:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:49:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:49:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:49:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:49:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:49:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:49:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:49:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:49:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:49:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:49:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:49:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:49:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:49:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:49:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:49:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:49:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:49:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:49:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:49:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:49:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:49:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:49:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:49:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:49:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:49:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:49:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:49:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:49:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:49:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:49:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:49:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:49:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:49:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:49:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:49:36,247 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:49:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:49:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:49:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:49:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:49:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:49:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:49:36,248 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:49:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:49:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:49:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:49:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:49:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:49:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:49:36,249 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:49:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:49:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:49:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:49:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:49:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:49:36,250 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:49:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:49:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:49:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:49:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:49:36,251 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:49:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:49:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:49:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:49:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:49:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:49:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:49:36,252 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:49:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:49:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:49:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:49:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:49:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:49:36,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:49:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:49:36,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:49:38,375 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:49:38,375 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:49:38,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:38 BoogieIcfgContainer [2019-11-07 00:49:38,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:49:38,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:49:38,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:49:38,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:49:38,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:49:34" (1/3) ... [2019-11-07 00:49:38,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6342f8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:38, skipping insertion in model container [2019-11-07 00:49:38,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:35" (2/3) ... [2019-11-07 00:49:38,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6342f8ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:38, skipping insertion in model container [2019-11-07 00:49:38,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:38" (3/3) ... [2019-11-07 00:49:38,385 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product25.cil.c [2019-11-07 00:49:38,395 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:49:38,408 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:49:38,421 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:49:38,476 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:49:38,476 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:49:38,476 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:49:38,476 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:49:38,476 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:49:38,477 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:49:38,480 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:49:38,481 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:49:38,522 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states. [2019-11-07 00:49:38,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-11-07 00:49:38,562 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:38,564 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:38,566 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:38,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:38,583 INFO L82 PathProgramCache]: Analyzing trace with hash -458917487, now seen corresponding path program 1 times [2019-11-07 00:49:38,593 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:38,594 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846026035] [2019-11-07 00:49:38,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:39,278 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846026035] [2019-11-07 00:49:39,279 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:39,279 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:49:39,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579525783] [2019-11-07 00:49:39,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:49:39,287 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:39,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:49:39,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:49:39,301 INFO L87 Difference]: Start difference. First operand 589 states. Second operand 2 states. [2019-11-07 00:49:39,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:39,433 INFO L93 Difference]: Finished difference Result 864 states and 1168 transitions. [2019-11-07 00:49:39,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:49:39,434 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 188 [2019-11-07 00:49:39,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:39,473 INFO L225 Difference]: With dead ends: 864 [2019-11-07 00:49:39,473 INFO L226 Difference]: Without dead ends: 560 [2019-11-07 00:49:39,485 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:49:39,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2019-11-07 00:49:39,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2019-11-07 00:49:39,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2019-11-07 00:49:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 761 transitions. [2019-11-07 00:49:39,597 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 761 transitions. Word has length 188 [2019-11-07 00:49:39,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:39,600 INFO L462 AbstractCegarLoop]: Abstraction has 560 states and 761 transitions. [2019-11-07 00:49:39,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:49:39,600 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 761 transitions. [2019-11-07 00:49:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-07 00:49:39,606 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:39,606 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:39,607 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:39,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:39,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1174707760, now seen corresponding path program 1 times [2019-11-07 00:49:39,608 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:39,608 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108530353] [2019-11-07 00:49:39,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:39,816 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108530353] [2019-11-07 00:49:39,816 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:39,816 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:39,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361595964] [2019-11-07 00:49:39,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:39,822 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:39,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:39,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:39,828 INFO L87 Difference]: Start difference. First operand 560 states and 761 transitions. Second operand 3 states. [2019-11-07 00:49:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:39,929 INFO L93 Difference]: Finished difference Result 847 states and 1130 transitions. [2019-11-07 00:49:39,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:39,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2019-11-07 00:49:39,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:39,934 INFO L225 Difference]: With dead ends: 847 [2019-11-07 00:49:39,934 INFO L226 Difference]: Without dead ends: 563 [2019-11-07 00:49:39,936 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2019-11-07 00:49:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 562. [2019-11-07 00:49:39,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2019-11-07 00:49:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 763 transitions. [2019-11-07 00:49:39,986 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 763 transitions. Word has length 189 [2019-11-07 00:49:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:39,986 INFO L462 AbstractCegarLoop]: Abstraction has 562 states and 763 transitions. [2019-11-07 00:49:39,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:39,987 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 763 transitions. [2019-11-07 00:49:39,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-07 00:49:39,991 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:39,991 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:49:39,992 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:39,992 INFO L82 PathProgramCache]: Analyzing trace with hash -980165084, now seen corresponding path program 1 times [2019-11-07 00:49:39,992 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:39,993 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457257494] [2019-11-07 00:49:39,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:49:40,159 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457257494] [2019-11-07 00:49:40,159 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:40,160 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:40,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559468447] [2019-11-07 00:49:40,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:40,161 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:40,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:40,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:40,162 INFO L87 Difference]: Start difference. First operand 562 states and 763 transitions. Second operand 3 states. [2019-11-07 00:49:40,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:40,212 INFO L93 Difference]: Finished difference Result 1102 states and 1527 transitions. [2019-11-07 00:49:40,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:40,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2019-11-07 00:49:40,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:40,225 INFO L225 Difference]: With dead ends: 1102 [2019-11-07 00:49:40,226 INFO L226 Difference]: Without dead ends: 605 [2019-11-07 00:49:40,229 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:40,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-11-07 00:49:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 604. [2019-11-07 00:49:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2019-11-07 00:49:40,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 835 transitions. [2019-11-07 00:49:40,288 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 835 transitions. Word has length 195 [2019-11-07 00:49:40,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:40,289 INFO L462 AbstractCegarLoop]: Abstraction has 604 states and 835 transitions. [2019-11-07 00:49:40,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:40,290 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 835 transitions. [2019-11-07 00:49:40,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:49:40,304 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:40,304 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:49:40,305 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:40,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:40,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1952461671, now seen corresponding path program 1 times [2019-11-07 00:49:40,306 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:40,306 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380213257] [2019-11-07 00:49:40,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:49:40,734 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380213257] [2019-11-07 00:49:40,734 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:40,738 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:49:40,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264413343] [2019-11-07 00:49:40,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:49:40,739 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:40,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:49:40,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:49:40,740 INFO L87 Difference]: Start difference. First operand 604 states and 835 transitions. Second operand 8 states. [2019-11-07 00:49:40,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:40,819 INFO L93 Difference]: Finished difference Result 875 states and 1192 transitions. [2019-11-07 00:49:40,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:49:40,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2019-11-07 00:49:40,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:40,826 INFO L225 Difference]: With dead ends: 875 [2019-11-07 00:49:40,826 INFO L226 Difference]: Without dead ends: 604 [2019-11-07 00:49:40,828 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:49:40,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2019-11-07 00:49:40,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2019-11-07 00:49:40,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2019-11-07 00:49:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 834 transitions. [2019-11-07 00:49:40,855 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 834 transitions. Word has length 196 [2019-11-07 00:49:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:40,856 INFO L462 AbstractCegarLoop]: Abstraction has 604 states and 834 transitions. [2019-11-07 00:49:40,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:49:40,856 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 834 transitions. [2019-11-07 00:49:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-11-07 00:49:40,860 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:40,861 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:40,862 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:40,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:40,862 INFO L82 PathProgramCache]: Analyzing trace with hash 988756676, now seen corresponding path program 1 times [2019-11-07 00:49:40,862 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:40,862 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688097519] [2019-11-07 00:49:40,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:40,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:41,129 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:49:41,129 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688097519] [2019-11-07 00:49:41,129 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:41,130 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:49:41,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748703569] [2019-11-07 00:49:41,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:49:41,131 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:41,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:49:41,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:49:41,132 INFO L87 Difference]: Start difference. First operand 604 states and 834 transitions. Second operand 7 states. [2019-11-07 00:49:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:44,283 INFO L93 Difference]: Finished difference Result 1175 states and 1588 transitions. [2019-11-07 00:49:44,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:49:44,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2019-11-07 00:49:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:44,291 INFO L225 Difference]: With dead ends: 1175 [2019-11-07 00:49:44,291 INFO L226 Difference]: Without dead ends: 900 [2019-11-07 00:49:44,292 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:49:44,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2019-11-07 00:49:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 891. [2019-11-07 00:49:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2019-11-07 00:49:44,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1211 transitions. [2019-11-07 00:49:44,341 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1211 transitions. Word has length 203 [2019-11-07 00:49:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:44,342 INFO L462 AbstractCegarLoop]: Abstraction has 891 states and 1211 transitions. [2019-11-07 00:49:44,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:49:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1211 transitions. [2019-11-07 00:49:44,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:49:44,347 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:44,347 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:44,347 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:44,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:44,348 INFO L82 PathProgramCache]: Analyzing trace with hash -866609900, now seen corresponding path program 1 times [2019-11-07 00:49:44,348 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:44,348 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717596329] [2019-11-07 00:49:44,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:49:45,009 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717596329] [2019-11-07 00:49:45,010 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:45,011 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-11-07 00:49:45,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624544512] [2019-11-07 00:49:45,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-07 00:49:45,012 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:45,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-07 00:49:45,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-11-07 00:49:45,013 INFO L87 Difference]: Start difference. First operand 891 states and 1211 transitions. Second operand 26 states. [2019-11-07 00:49:45,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:45,865 INFO L93 Difference]: Finished difference Result 1582 states and 2143 transitions. [2019-11-07 00:49:45,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 00:49:45,866 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 204 [2019-11-07 00:49:45,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:45,873 INFO L225 Difference]: With dead ends: 1582 [2019-11-07 00:49:45,874 INFO L226 Difference]: Without dead ends: 1016 [2019-11-07 00:49:45,877 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:49:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2019-11-07 00:49:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1011. [2019-11-07 00:49:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2019-11-07 00:49:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1368 transitions. [2019-11-07 00:49:45,936 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1368 transitions. Word has length 204 [2019-11-07 00:49:45,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:45,937 INFO L462 AbstractCegarLoop]: Abstraction has 1011 states and 1368 transitions. [2019-11-07 00:49:45,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-07 00:49:45,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1368 transitions. [2019-11-07 00:49:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-11-07 00:49:45,942 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:45,942 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:45,942 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:45,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:45,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1569565684, now seen corresponding path program 1 times [2019-11-07 00:49:45,943 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:45,943 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133909310] [2019-11-07 00:49:45,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:46,258 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:49:46,259 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133909310] [2019-11-07 00:49:46,259 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464897383] [2019-11-07 00:49:46,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:46,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:49:46,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 00:49:47,134 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:47,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:49:47,612 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:47,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:49:47,823 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:49:47,823 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-11-07 00:49:47,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961665962] [2019-11-07 00:49:47,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:49:47,825 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:47,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:49:47,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:49:47,826 INFO L87 Difference]: Start difference. First operand 1011 states and 1368 transitions. Second operand 9 states. [2019-11-07 00:49:49,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:49,352 INFO L93 Difference]: Finished difference Result 2000 states and 2716 transitions. [2019-11-07 00:49:49,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:49:49,352 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 235 [2019-11-07 00:49:49,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:49,358 INFO L225 Difference]: With dead ends: 2000 [2019-11-07 00:49:49,358 INFO L226 Difference]: Without dead ends: 1025 [2019-11-07 00:49:49,362 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 456 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:49:49,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2019-11-07 00:49:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1025. [2019-11-07 00:49:49,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2019-11-07 00:49:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1386 transitions. [2019-11-07 00:49:49,428 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1386 transitions. Word has length 235 [2019-11-07 00:49:49,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:49,430 INFO L462 AbstractCegarLoop]: Abstraction has 1025 states and 1386 transitions. [2019-11-07 00:49:49,430 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:49:49,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1386 transitions. [2019-11-07 00:49:49,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-11-07 00:49:49,437 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:49,437 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:49,646 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:49,647 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:49,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:49,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1087527948, now seen corresponding path program 1 times [2019-11-07 00:49:49,647 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:49,648 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583023114] [2019-11-07 00:49:49,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:49:50,011 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583023114] [2019-11-07 00:49:50,011 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555541293] [2019-11-07 00:49:50,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:50,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:49:50,813 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:51,006 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 00:49:51,006 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:51,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:51,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:49:51,408 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:49:51,408 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:49:51,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835367656] [2019-11-07 00:49:51,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:49:51,409 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:51,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:49:51,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:49:51,410 INFO L87 Difference]: Start difference. First operand 1025 states and 1386 transitions. Second operand 7 states. [2019-11-07 00:49:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:52,805 INFO L93 Difference]: Finished difference Result 2001 states and 2720 transitions. [2019-11-07 00:49:52,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:49:52,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2019-11-07 00:49:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:52,820 INFO L225 Difference]: With dead ends: 2001 [2019-11-07 00:49:52,820 INFO L226 Difference]: Without dead ends: 1027 [2019-11-07 00:49:52,827 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 463 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:49:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-11-07 00:49:52,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1027. [2019-11-07 00:49:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2019-11-07 00:49:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1389 transitions. [2019-11-07 00:49:52,907 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1389 transitions. Word has length 236 [2019-11-07 00:49:52,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:52,908 INFO L462 AbstractCegarLoop]: Abstraction has 1027 states and 1389 transitions. [2019-11-07 00:49:52,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:49:52,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1389 transitions. [2019-11-07 00:49:52,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-11-07 00:49:52,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:52,926 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:53,136 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:53,138 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:53,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:53,138 INFO L82 PathProgramCache]: Analyzing trace with hash -165913417, now seen corresponding path program 1 times [2019-11-07 00:49:53,139 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:53,139 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478719915] [2019-11-07 00:49:53,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:49:53,595 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478719915] [2019-11-07 00:49:53,595 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562971913] [2019-11-07 00:49:53,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:54,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:49:54,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 00:49:54,429 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:54,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:49:54,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:54,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-11-07 00:49:55,106 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:49:55,106 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-11-07 00:49:55,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129614426] [2019-11-07 00:49:55,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:49:55,110 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:55,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:49:55,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:49:55,111 INFO L87 Difference]: Start difference. First operand 1027 states and 1389 transitions. Second operand 16 states. [2019-11-07 00:49:57,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:57,721 INFO L93 Difference]: Finished difference Result 2005 states and 2720 transitions. [2019-11-07 00:49:57,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:49:57,722 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 237 [2019-11-07 00:49:57,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:57,729 INFO L225 Difference]: With dead ends: 2005 [2019-11-07 00:49:57,729 INFO L226 Difference]: Without dead ends: 1039 [2019-11-07 00:49:57,733 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 460 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:49:57,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2019-11-07 00:49:57,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1037. [2019-11-07 00:49:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2019-11-07 00:49:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1400 transitions. [2019-11-07 00:49:57,784 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1400 transitions. Word has length 237 [2019-11-07 00:49:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:57,784 INFO L462 AbstractCegarLoop]: Abstraction has 1037 states and 1400 transitions. [2019-11-07 00:49:57,784 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:49:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1400 transitions. [2019-11-07 00:49:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-11-07 00:49:57,789 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:57,789 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:58,005 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:58,006 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:58,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:58,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1578129013, now seen corresponding path program 2 times [2019-11-07 00:49:58,007 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:58,007 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932934946] [2019-11-07 00:49:58,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 00:49:58,760 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932934946] [2019-11-07 00:49:58,760 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37198909] [2019-11-07 00:49:58,760 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:49:59,366 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:49:59,366 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:49:59,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 2850 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:49:59,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:49:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 00:49:59,614 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:49:59,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:49:59,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:50:00,068 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:00,068 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-11-07 00:50:00,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886448364] [2019-11-07 00:50:00,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:50:00,069 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:00,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:50:00,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:50:00,071 INFO L87 Difference]: Start difference. First operand 1037 states and 1400 transitions. Second operand 12 states. [2019-11-07 00:50:01,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:01,478 INFO L93 Difference]: Finished difference Result 1996 states and 2708 transitions. [2019-11-07 00:50:01,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:50:01,479 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 238 [2019-11-07 00:50:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:01,485 INFO L225 Difference]: With dead ends: 1996 [2019-11-07 00:50:01,485 INFO L226 Difference]: Without dead ends: 1039 [2019-11-07 00:50:01,489 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 478 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2019-11-07 00:50:01,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2019-11-07 00:50:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1037. [2019-11-07 00:50:01,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2019-11-07 00:50:01,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1399 transitions. [2019-11-07 00:50:01,538 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1399 transitions. Word has length 238 [2019-11-07 00:50:01,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:01,539 INFO L462 AbstractCegarLoop]: Abstraction has 1037 states and 1399 transitions. [2019-11-07 00:50:01,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:50:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1399 transitions. [2019-11-07 00:50:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-11-07 00:50:01,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:01,545 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:01,763 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:01,764 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:01,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:01,764 INFO L82 PathProgramCache]: Analyzing trace with hash 39756280, now seen corresponding path program 3 times [2019-11-07 00:50:01,764 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:01,765 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953740556] [2019-11-07 00:50:01,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:02,450 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:50:02,451 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953740556] [2019-11-07 00:50:02,451 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364104635] [2019-11-07 00:50:02,451 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:02,963 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-07 00:50:02,963 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:50:02,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 2353 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:02,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-11-07 00:50:03,477 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:03,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:04,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:04,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:04,353 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:50:04,355 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:04,355 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [29] total 42 [2019-11-07 00:50:04,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488527789] [2019-11-07 00:50:04,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:50:04,361 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:04,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:50:04,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1618, Unknown=0, NotChecked=0, Total=1722 [2019-11-07 00:50:04,362 INFO L87 Difference]: Start difference. First operand 1037 states and 1399 transitions. Second operand 15 states. [2019-11-07 00:50:05,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:05,909 INFO L93 Difference]: Finished difference Result 2003 states and 2715 transitions. [2019-11-07 00:50:05,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:05,918 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 239 [2019-11-07 00:50:05,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:05,925 INFO L225 Difference]: With dead ends: 2003 [2019-11-07 00:50:05,925 INFO L226 Difference]: Without dead ends: 1041 [2019-11-07 00:50:05,933 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 475 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=1937, Unknown=0, NotChecked=0, Total=2070 [2019-11-07 00:50:05,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states.