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_spec9_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:19:03,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:19:03,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:19:03,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:19:03,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:19:03,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:19:03,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:19:03,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:19:03,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:19:03,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:19:03,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:19:03,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:19:03,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:19:03,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:19:03,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:19:03,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:19:03,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:19:03,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:19:03,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:19:03,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:19:03,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:19:03,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:19:03,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:19:03,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:19:03,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:19:03,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:19:03,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:19:03,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:19:03,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:19:03,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:19:03,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:19:03,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:19:03,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:19:03,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:19:03,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:19:03,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:19:03,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:19:03,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:19:03,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:19:03,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:19:03,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:19:03,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:19:03,423 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:19:03,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:19:03,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:19:03,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:19:03,426 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:19:03,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:19:03,427 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:19:03,427 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:19:03,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:19:03,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:19:03,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:19:03,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:19:03,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:19:03,429 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:19:03,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:19:03,430 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:19:03,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:19:03,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:19:03,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:19:03,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:19:03,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:19:03,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:03,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:19:03,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:19:03,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:19:03,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:19:03,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:19:03,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:19:03,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:19:03,747 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:19:03,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:19:03,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:19:03,774 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:19:03,774 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:19:03,775 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product22.cil.c [2019-10-13 21:19:03,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65fe2fc22/19ea2bf02bc54bd4bfc8838e5967c57a/FLAG030944d85 [2019-10-13 21:19:04,550 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:19:04,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product22.cil.c [2019-10-13 21:19:04,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65fe2fc22/19ea2bf02bc54bd4bfc8838e5967c57a/FLAG030944d85 [2019-10-13 21:19:04,715 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65fe2fc22/19ea2bf02bc54bd4bfc8838e5967c57a [2019-10-13 21:19:04,733 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:19:04,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:19:04,740 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:04,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:19:04,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:19:04,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:04" (1/1) ... [2019-10-13 21:19:04,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9375a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:04, skipping insertion in model container [2019-10-13 21:19:04,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:04" (1/1) ... [2019-10-13 21:19:04,762 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:19:04,860 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:19:05,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:05,670 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:19:05,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:05,879 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:19:05,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05 WrapperNode [2019-10-13 21:19:05,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:05,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:19:05,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:19:05,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:19:05,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:06,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:06,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:06,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:06,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:19:06,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:19:06,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:19:06,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:19:06,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:06,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:19:06,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:19:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:19:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:19:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:19:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:19:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:19:06,205 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:19:06,205 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:19:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:19:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:19:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:19:06,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:19:06,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:19:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:19:06,210 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:19:06,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:19:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:19:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:19:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:19:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:19:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:19:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:19:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:19:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:19:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:19:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:19:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:19:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:19:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:19:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:19:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:19:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:19:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:19:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:19:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:19:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:19:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:19:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:19:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:19:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:19:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:19:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:19:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:19:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:19:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:19:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:19:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:19:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:19:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:19:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:19:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:19:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:19:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:19:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:19:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:19:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:19:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:19:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:19:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:19:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:19:06,220 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:19:06,220 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:19:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:19:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-13 21:19:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:19:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:19:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:19:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:19:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:19:06,221 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:19:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:19:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:19:06,222 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:19:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:19:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:19:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:19:06,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:19:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:19:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:19:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:06,224 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:19:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:19:06,225 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:19:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:19:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:19:06,226 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:19:06,227 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:19:06,227 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:19:06,227 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:19:06,227 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:19:06,227 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:19:06,227 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:19:06,227 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:19:06,228 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:19:06,228 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:19:06,228 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:19:06,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:19:06,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:06,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:06,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:06,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:19:06,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:19:06,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:19:06,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:06,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:06,229 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:19:06,229 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:19:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:19:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:19:06,230 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:19:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:19:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:19:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:19:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:19:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:19:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:19:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:19:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:19:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:19:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:19:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:19:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:19:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:19:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:19:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:19:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:19:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:19:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:19:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:19:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:19:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:19:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:19:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:19:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:19:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:19:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:19:06,240 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:19:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:19:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:19:06,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:19:06,242 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:19:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:19:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:19:06,248 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:19:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:19:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:19:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:19:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:19:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:19:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:19:06,249 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:19:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:19:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:19:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:19:06,250 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:19:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:19:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:19:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:19:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:19:06,252 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:19:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:19:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:19:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:19:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:19:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:19:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:19:06,253 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:19:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:19:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:19:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:19:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:19:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:19:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:19:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:19:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:19:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:19:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:19:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:19:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:19:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:19:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:19:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:19:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:19:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:19:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:19:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:19:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:19:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:19:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:19:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:19:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:19:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:19:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:19:06,257 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:19:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:19:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:19:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:19:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:19:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-13 21:19:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:19:06,258 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:19:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:19:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:19:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:19:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:19:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:19:06,259 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:19:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:19:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:19:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:19:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:19:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:19:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:06,260 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:19:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:19:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:19:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:19:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:19:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:19:06,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:19:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:19:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:19:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:19:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:19:06,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:19:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:19:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:19:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:19:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:19:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:19:06,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:19:08,681 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:19:08,682 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:19:08,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:08 BoogieIcfgContainer [2019-10-13 21:19:08,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:19:08,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:19:08,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:19:08,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:19:08,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:19:04" (1/3) ... [2019-10-13 21:19:08,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f72da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:08, skipping insertion in model container [2019-10-13 21:19:08,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (2/3) ... [2019-10-13 21:19:08,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f72da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:08, skipping insertion in model container [2019-10-13 21:19:08,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:08" (3/3) ... [2019-10-13 21:19:08,693 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product22.cil.c [2019-10-13 21:19:08,703 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:19:08,714 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:19:08,725 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:19:08,765 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:19:08,765 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:19:08,765 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:19:08,765 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:19:08,765 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:19:08,766 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:19:08,767 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:19:08,771 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:19:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states. [2019-10-13 21:19:08,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 21:19:08,850 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:08,851 INFO L380 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] [2019-10-13 21:19:08,854 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:08,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:08,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1826249356, now seen corresponding path program 1 times [2019-10-13 21:19:08,874 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:08,875 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328874774] [2019-10-13 21:19:08,875 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:08,875 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:08,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:09,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:09,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328874774] [2019-10-13 21:19:09,612 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:09,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:19:09,613 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829514551] [2019-10-13 21:19:09,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:19:09,621 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:09,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:19:09,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:09,639 INFO L87 Difference]: Start difference. First operand 512 states. Second operand 2 states. [2019-10-13 21:19:09,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:09,770 INFO L93 Difference]: Finished difference Result 755 states and 991 transitions. [2019-10-13 21:19:09,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:19:09,772 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-10-13 21:19:09,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:09,808 INFO L225 Difference]: With dead ends: 755 [2019-10-13 21:19:09,808 INFO L226 Difference]: Without dead ends: 489 [2019-10-13 21:19:09,818 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:09,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2019-10-13 21:19:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2019-10-13 21:19:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-10-13 21:19:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 647 transitions. [2019-10-13 21:19:09,958 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 647 transitions. Word has length 145 [2019-10-13 21:19:09,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:09,960 INFO L462 AbstractCegarLoop]: Abstraction has 489 states and 647 transitions. [2019-10-13 21:19:09,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:19:09,960 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 647 transitions. [2019-10-13 21:19:09,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 21:19:09,964 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:09,965 INFO L380 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] [2019-10-13 21:19:09,965 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:09,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:09,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1826131323, now seen corresponding path program 1 times [2019-10-13 21:19:09,966 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:09,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192457540] [2019-10-13 21:19:09,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:10,175 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:10,175 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192457540] [2019-10-13 21:19:10,175 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:10,176 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:10,176 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549171963] [2019-10-13 21:19:10,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:10,179 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:10,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:10,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,179 INFO L87 Difference]: Start difference. First operand 489 states and 647 transitions. Second operand 3 states. [2019-10-13 21:19:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:10,227 INFO L93 Difference]: Finished difference Result 738 states and 960 transitions. [2019-10-13 21:19:10,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:10,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-10-13 21:19:10,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:10,233 INFO L225 Difference]: With dead ends: 738 [2019-10-13 21:19:10,233 INFO L226 Difference]: Without dead ends: 492 [2019-10-13 21:19:10,235 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-13 21:19:10,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2019-10-13 21:19:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-10-13 21:19:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 649 transitions. [2019-10-13 21:19:10,259 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 649 transitions. Word has length 146 [2019-10-13 21:19:10,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,260 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 649 transitions. [2019-10-13 21:19:10,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:10,260 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 649 transitions. [2019-10-13 21:19:10,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:19:10,264 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,264 INFO L380 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] [2019-10-13 21:19:10,264 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1246469625, now seen corresponding path program 1 times [2019-10-13 21:19:10,265 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,265 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576246749] [2019-10-13 21:19:10,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,265 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:10,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576246749] [2019-10-13 21:19:10,509 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:10,509 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:10,509 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159227102] [2019-10-13 21:19:10,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:10,513 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:10,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:10,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,514 INFO L87 Difference]: Start difference. First operand 491 states and 649 transitions. Second operand 3 states. [2019-10-13 21:19:10,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:10,555 INFO L93 Difference]: Finished difference Result 960 states and 1299 transitions. [2019-10-13 21:19:10,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:10,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-13 21:19:10,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:10,559 INFO L225 Difference]: With dead ends: 960 [2019-10-13 21:19:10,560 INFO L226 Difference]: Without dead ends: 534 [2019-10-13 21:19:10,561 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-10-13 21:19:10,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 533. [2019-10-13 21:19:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2019-10-13 21:19:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 721 transitions. [2019-10-13 21:19:10,592 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 721 transitions. Word has length 158 [2019-10-13 21:19:10,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,595 INFO L462 AbstractCegarLoop]: Abstraction has 533 states and 721 transitions. [2019-10-13 21:19:10,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:10,596 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 721 transitions. [2019-10-13 21:19:10,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:19:10,599 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,599 INFO L380 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] [2019-10-13 21:19:10,600 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,600 INFO L82 PathProgramCache]: Analyzing trace with hash -482863348, now seen corresponding path program 1 times [2019-10-13 21:19:10,600 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,601 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691831167] [2019-10-13 21:19:10,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,601 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:10,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691831167] [2019-10-13 21:19:10,752 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:10,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:10,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483912952] [2019-10-13 21:19:10,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:10,754 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:10,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:10,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,754 INFO L87 Difference]: Start difference. First operand 533 states and 721 transitions. Second operand 3 states. [2019-10-13 21:19:10,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:10,789 INFO L93 Difference]: Finished difference Result 1083 states and 1510 transitions. [2019-10-13 21:19:10,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:10,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-13 21:19:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:10,794 INFO L225 Difference]: With dead ends: 1083 [2019-10-13 21:19:10,794 INFO L226 Difference]: Without dead ends: 615 [2019-10-13 21:19:10,796 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-13 21:19:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 614. [2019-10-13 21:19:10,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-13 21:19:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 859 transitions. [2019-10-13 21:19:10,821 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 859 transitions. Word has length 159 [2019-10-13 21:19:10,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,822 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 859 transitions. [2019-10-13 21:19:10,822 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:10,822 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 859 transitions. [2019-10-13 21:19:10,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:19:10,826 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,826 INFO L380 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] [2019-10-13 21:19:10,826 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1145624437, now seen corresponding path program 1 times [2019-10-13 21:19:10,827 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506468828] [2019-10-13 21:19:10,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:19:11,128 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506468828] [2019-10-13 21:19:11,129 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:11,129 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:11,129 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045016444] [2019-10-13 21:19:11,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:11,130 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:11,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:11,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:11,131 INFO L87 Difference]: Start difference. First operand 614 states and 859 transitions. Second operand 3 states. [2019-10-13 21:19:11,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:11,184 INFO L93 Difference]: Finished difference Result 924 states and 1264 transitions. [2019-10-13 21:19:11,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:11,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-13 21:19:11,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:11,192 INFO L225 Difference]: With dead ends: 924 [2019-10-13 21:19:11,192 INFO L226 Difference]: Without dead ends: 680 [2019-10-13 21:19:11,194 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2019-10-13 21:19:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2019-10-13 21:19:11,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2019-10-13 21:19:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 947 transitions. [2019-10-13 21:19:11,242 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 947 transitions. Word has length 162 [2019-10-13 21:19:11,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:11,244 INFO L462 AbstractCegarLoop]: Abstraction has 680 states and 947 transitions. [2019-10-13 21:19:11,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:11,245 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 947 transitions. [2019-10-13 21:19:11,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-10-13 21:19:11,256 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:11,257 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 21:19:11,258 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:11,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:11,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1133524497, now seen corresponding path program 1 times [2019-10-13 21:19:11,259 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:11,259 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592594556] [2019-10-13 21:19:11,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:11,259 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:11,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:11,912 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:19:11,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592594556] [2019-10-13 21:19:11,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602492781] [2019-10-13 21:19:11,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:12,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:12,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:19:13,021 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:13,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:13,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:13,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:19:14,125 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:14,125 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:19:14,125 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707275805] [2019-10-13 21:19:14,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:14,126 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:14,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:14,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:14,129 INFO L87 Difference]: Start difference. First operand 680 states and 947 transitions. Second operand 9 states. [2019-10-13 21:19:15,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:15,973 INFO L93 Difference]: Finished difference Result 1338 states and 1874 transitions. [2019-10-13 21:19:15,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:15,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 280 [2019-10-13 21:19:15,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:15,980 INFO L225 Difference]: With dead ends: 1338 [2019-10-13 21:19:15,980 INFO L226 Difference]: Without dead ends: 694 [2019-10-13 21:19:15,984 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 549 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:19:15,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2019-10-13 21:19:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2019-10-13 21:19:16,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-10-13 21:19:16,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 965 transitions. [2019-10-13 21:19:16,035 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 965 transitions. Word has length 280 [2019-10-13 21:19:16,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:16,041 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 965 transitions. [2019-10-13 21:19:16,041 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:16,041 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 965 transitions. [2019-10-13 21:19:16,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-10-13 21:19:16,048 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:16,048 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:16,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:16,268 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:16,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:16,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2014136460, now seen corresponding path program 1 times [2019-10-13 21:19:16,269 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:16,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904622677] [2019-10-13 21:19:16,271 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:16,271 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:16,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:19:16,902 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904622677] [2019-10-13 21:19:16,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266022133] [2019-10-13 21:19:16,903 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:17,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:17,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:19:17,731 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:18,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:18,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:19:18,497 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:18,497 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:19:18,497 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429836017] [2019-10-13 21:19:18,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:18,498 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:18,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:18,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:18,499 INFO L87 Difference]: Start difference. First operand 694 states and 965 transitions. Second operand 7 states. [2019-10-13 21:19:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:19,984 INFO L93 Difference]: Finished difference Result 1339 states and 1880 transitions. [2019-10-13 21:19:19,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:19,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2019-10-13 21:19:19,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:19,989 INFO L225 Difference]: With dead ends: 1339 [2019-10-13 21:19:19,990 INFO L226 Difference]: Without dead ends: 696 [2019-10-13 21:19:19,995 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 556 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:19:19,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2019-10-13 21:19:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2019-10-13 21:19:20,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2019-10-13 21:19:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 968 transitions. [2019-10-13 21:19:20,030 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 968 transitions. Word has length 281 [2019-10-13 21:19:20,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:20,032 INFO L462 AbstractCegarLoop]: Abstraction has 696 states and 968 transitions. [2019-10-13 21:19:20,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:20,032 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 968 transitions. [2019-10-13 21:19:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-10-13 21:19:20,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:20,040 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:20,248 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:20,248 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:20,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:20,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1456621325, now seen corresponding path program 1 times [2019-10-13 21:19:20,249 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:20,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686252322] [2019-10-13 21:19:20,250 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:19:20,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686252322] [2019-10-13 21:19:20,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321255245] [2019-10-13 21:19:20,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:21,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 3067 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:21,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 21:19:22,030 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:22,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:22,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:23,074 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:19:23,420 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:23,420 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:19:23,420 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93131043] [2019-10-13 21:19:23,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:23,422 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:23,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:23,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:19:23,423 INFO L87 Difference]: Start difference. First operand 696 states and 968 transitions. Second operand 16 states. [2019-10-13 21:19:25,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:25,239 INFO L93 Difference]: Finished difference Result 1343 states and 1878 transitions. [2019-10-13 21:19:25,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:25,239 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 282 [2019-10-13 21:19:25,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:25,245 INFO L225 Difference]: With dead ends: 1343 [2019-10-13 21:19:25,245 INFO L226 Difference]: Without dead ends: 708 [2019-10-13 21:19:25,248 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 553 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:19:25,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-10-13 21:19:25,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 706. [2019-10-13 21:19:25,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-10-13 21:19:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 979 transitions. [2019-10-13 21:19:25,281 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 979 transitions. Word has length 282 [2019-10-13 21:19:25,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:25,282 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 979 transitions. [2019-10-13 21:19:25,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 979 transitions. [2019-10-13 21:19:25,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-10-13 21:19:25,289 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:25,289 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:25,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:25,497 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:25,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:25,498 INFO L82 PathProgramCache]: Analyzing trace with hash -428837282, now seen corresponding path program 2 times [2019-10-13 21:19:25,499 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:25,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532812148] [2019-10-13 21:19:25,499 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:25,500 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:25,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-13 21:19:26,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532812148] [2019-10-13 21:19:26,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167338788] [2019-10-13 21:19:26,023 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 [2019-10-13 21:19:26,670 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:19:26,670 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:26,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 2357 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:26,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 21:19:26,926 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:27,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:27,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:27,532 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-13 21:19:27,533 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:27,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:19:27,534 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604990878] [2019-10-13 21:19:27,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:19:27,535 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:27,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:19:27,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:19:27,536 INFO L87 Difference]: Start difference. First operand 706 states and 979 transitions. Second operand 12 states. [2019-10-13 21:19:28,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:28,812 INFO L93 Difference]: Finished difference Result 1334 states and 1866 transitions. [2019-10-13 21:19:28,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:28,813 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 283 [2019-10-13 21:19:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:28,819 INFO L225 Difference]: With dead ends: 1334 [2019-10-13 21:19:28,819 INFO L226 Difference]: Without dead ends: 708 [2019-10-13 21:19:28,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 560 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:28,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-10-13 21:19:28,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 706. [2019-10-13 21:19:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-10-13 21:19:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 978 transitions. [2019-10-13 21:19:28,865 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 978 transitions. Word has length 283 [2019-10-13 21:19:28,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:28,866 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 978 transitions. [2019-10-13 21:19:28,866 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:19:28,866 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 978 transitions. [2019-10-13 21:19:28,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-10-13 21:19:28,873 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:28,873 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:29,082 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:29,083 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:29,084 INFO L82 PathProgramCache]: Analyzing trace with hash -420119341, now seen corresponding path program 3 times [2019-10-13 21:19:29,084 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:29,084 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117036180] [2019-10-13 21:19:29,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:29,085 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:29,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:19:29,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117036180] [2019-10-13 21:19:29,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108558103] [2019-10-13 21:19:29,539 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 [2019-10-13 21:19:30,154 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:19:30,154 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:30,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:30,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 21:19:30,414 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:31,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:31,109 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:31,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-13 21:19:31,343 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:31,343 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:19:31,343 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103603044] [2019-10-13 21:19:31,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:19:31,344 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:31,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:19:31,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:31,345 INFO L87 Difference]: Start difference. First operand 706 states and 978 transitions. Second operand 15 states. [2019-10-13 21:19:33,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:33,116 INFO L93 Difference]: Finished difference Result 1341 states and 1873 transitions. [2019-10-13 21:19:33,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:33,117 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 284 [2019-10-13 21:19:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:33,126 INFO L225 Difference]: With dead ends: 1341 [2019-10-13 21:19:33,126 INFO L226 Difference]: Without dead ends: 710 [2019-10-13 21:19:33,131 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 557 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:19:33,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2019-10-13 21:19:33,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 706. [2019-10-13 21:19:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-10-13 21:19:33,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 977 transitions. [2019-10-13 21:19:33,166 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 977 transitions. Word has length 284 [2019-10-13 21:19:33,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:33,167 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 977 transitions. [2019-10-13 21:19:33,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:19:33,167 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 977 transitions. [2019-10-13 21:19:33,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-10-13 21:19:33,171 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:33,172 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:33,379 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:33,380 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:33,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:33,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1473254531, now seen corresponding path program 1 times [2019-10-13 21:19:33,381 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:33,382 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442767003] [2019-10-13 21:19:33,382 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:33,382 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:33,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:33,801 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-13 21:19:33,801 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442767003] [2019-10-13 21:19:33,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966303311] [2019-10-13 21:19:33,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:34,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:34,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-13 21:19:34,757 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:35,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:35,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-13 21:19:35,372 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:35,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-13 21:19:35,372 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775829391] [2019-10-13 21:19:35,373 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:19:35,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:35,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:19:35,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:35,374 INFO L87 Difference]: Start difference. First operand 706 states and 977 transitions. Second operand 11 states. [2019-10-13 21:19:36,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:36,818 INFO L93 Difference]: Finished difference Result 1338 states and 1870 transitions. [2019-10-13 21:19:36,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:36,819 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 285 [2019-10-13 21:19:36,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:36,824 INFO L225 Difference]: With dead ends: 1338 [2019-10-13 21:19:36,824 INFO L226 Difference]: Without dead ends: 712 [2019-10-13 21:19:36,827 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 564 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:19:36,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2019-10-13 21:19:36,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 708. [2019-10-13 21:19:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2019-10-13 21:19:36,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 980 transitions. [2019-10-13 21:19:36,860 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 980 transitions. Word has length 285 [2019-10-13 21:19:36,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:36,860 INFO L462 AbstractCegarLoop]: Abstraction has 708 states and 980 transitions. [2019-10-13 21:19:36,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:19:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 980 transitions. [2019-10-13 21:19:36,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-13 21:19:36,864 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:36,864 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 21:19:37,072 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:37,072 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:37,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:37,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1573060947, now seen corresponding path program 1 times [2019-10-13 21:19:37,073 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:37,074 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104545958] [2019-10-13 21:19:37,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:37,074 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:37,075 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat