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_spec8_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:18:07,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:18:07,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:18:07,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:18:07,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:18:07,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:18:07,478 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:18:07,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:18:07,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:18:07,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:18:07,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:18:07,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:18:07,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:18:07,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:18:07,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:18:07,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:18:07,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:18:07,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:18:07,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:18:07,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:18:07,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:18:07,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:18:07,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:18:07,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:18:07,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:18:07,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:18:07,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:18:07,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:18:07,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:18:07,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:18:07,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:18:07,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:18:07,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:18:07,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:18:07,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:18:07,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:18:07,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:18:07,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:18:07,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:18:07,550 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:18:07,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:18:07,553 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 21:18:07,574 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:18:07,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:18:07,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:18:07,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:18:07,577 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:18:07,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:18:07,578 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:18:07,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:18:07,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:18:07,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:18:07,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:18:07,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:18:07,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:18:07,581 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:18:07,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:18:07,581 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:18:07,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:18:07,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:18:07,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:18:07,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:18:07,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:18:07,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:07,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:18:07,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:18:07,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:18:07,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:18:07,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:18:07,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:18:07,584 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 21:18:07,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:18:07,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:18:07,897 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:18:07,899 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:18:07,900 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:18:07,900 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product15.cil.c [2019-10-13 21:18:07,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c9c316f/5b0263eb23644b47a3f779c880489311/FLAGe74e4aabf [2019-10-13 21:18:08,616 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:18:08,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product15.cil.c [2019-10-13 21:18:08,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c9c316f/5b0263eb23644b47a3f779c880489311/FLAGe74e4aabf [2019-10-13 21:18:08,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c9c316f/5b0263eb23644b47a3f779c880489311 [2019-10-13 21:18:08,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:18:08,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:18:08,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:08,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:18:08,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:18:08,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:08" (1/1) ... [2019-10-13 21:18:08,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df463d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:08, skipping insertion in model container [2019-10-13 21:18:08,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:08" (1/1) ... [2019-10-13 21:18:08,793 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:18:08,876 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:18:09,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:09,593 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:18:09,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:09,806 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:18:09,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:09 WrapperNode [2019-10-13 21:18:09,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:09,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:18:09,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:18:09,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:18:09,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:09" (1/1) ... [2019-10-13 21:18:09,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:09" (1/1) ... [2019-10-13 21:18:09,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:09" (1/1) ... [2019-10-13 21:18:09,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:09" (1/1) ... [2019-10-13 21:18:09,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:09" (1/1) ... [2019-10-13 21:18:09,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:09" (1/1) ... [2019-10-13 21:18:09,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:09" (1/1) ... [2019-10-13 21:18:10,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:18:10,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:18:10,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:18:10,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:18:10,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:09" (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 21:18:10,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:18:10,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:18:10,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:10,073 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:18:10,073 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:18:10,074 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:18:10,074 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:18:10,074 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:18:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:18:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:18:10,075 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:18:10,076 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:18:10,076 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:18:10,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:18:10,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:18:10,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:18:10,080 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:18:10,080 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:18:10,080 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:18:10,080 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:18:10,081 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:18:10,081 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:18:10,081 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:18:10,082 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:18:10,082 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:18:10,082 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:18:10,082 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:18:10,082 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:18:10,083 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:10,083 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-13 21:18:10,083 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:18:10,083 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:18:10,083 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:18:10,084 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:18:10,084 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:18:10,084 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:18:10,084 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:18:10,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:18:10,085 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:18:10,085 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:18:10,085 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:18:10,085 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:18:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:18:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:18:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:18:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:18:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:18:10,086 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:18:10,087 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:18:10,087 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:18:10,087 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:18:10,087 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:18:10,087 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:18:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:18:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:18:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:18:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:18:10,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:18:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:18:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:18:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:18:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:18:10,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:18:10,090 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:18:10,090 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:18:10,090 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:18:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:18:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:18:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:18:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:18:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:18:10,091 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:18:10,092 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:18:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:18:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:18:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:18:10,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:18:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:18:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:18:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:18:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:18:10,095 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:18:10,095 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:18:10,095 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:18:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:18:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:18:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:18:10,096 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:10,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:10,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:18:10,097 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:18:10,097 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:18:10,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:18:10,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:18:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:18:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:18:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:18:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:18:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:10,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:18:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:18:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:18:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:18:10,099 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:18:10,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:18:10,100 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:18:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:18:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:18:10,100 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:18:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:18:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:18:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:18:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:18:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:18:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:18:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:18:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:18:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:18:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:18:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:18:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:18:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:18:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:18:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:18:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:18:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:18:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:18:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:18:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:18:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:18:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:18:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:18:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:18:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:18:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:18:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:18:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:18:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:18:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:18:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:18:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:18:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:18:10,106 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:18:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:18:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:18:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:18:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:18:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:18:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:18:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:18:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:18:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:18:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:18:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-13 21:18:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:18:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:18:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:18:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:18:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:18:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:18:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:18:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:18:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:18:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:18:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:18:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:18:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:18:10,110 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:18:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:18:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:18:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:18:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:18:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:18:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:18:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:18:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:18:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:18:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:18:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:18:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:18:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:18:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:18:10,112 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:18:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:18:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:18:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:18:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:18:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:18:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:18:10,113 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:18:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:18:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:18:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:18:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:18:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:18:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:18:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:18:10,114 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:18:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:18:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:18:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:18:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:18:10,115 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:18:10,116 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:18:10,116 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:18:10,116 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:18:10,116 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:18:10,116 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:18:10,116 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:18:10,116 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:10,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:18:10,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:18:10,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:18:10,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:18:10,117 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:10,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:18:10,117 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:18:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:18:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:18:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:18:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:18:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:18:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:18:10,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:18:12,178 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:18:12,178 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:18:12,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:12 BoogieIcfgContainer [2019-10-13 21:18:12,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:18:12,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:18:12,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:18:12,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:18:12,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:08" (1/3) ... [2019-10-13 21:18:12,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26597943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:12, skipping insertion in model container [2019-10-13 21:18:12,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:09" (2/3) ... [2019-10-13 21:18:12,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26597943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:12, skipping insertion in model container [2019-10-13 21:18:12,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:12" (3/3) ... [2019-10-13 21:18:12,189 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product15.cil.c [2019-10-13 21:18:12,200 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:18:12,212 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:18:12,225 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:18:12,269 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:18:12,269 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:18:12,270 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:18:12,270 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:18:12,270 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:18:12,270 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:18:12,270 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:18:12,270 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:18:12,307 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states. [2019-10-13 21:18:12,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 21:18:12,346 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:12,348 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 21:18:12,352 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:12,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1184146621, now seen corresponding path program 1 times [2019-10-13 21:18:12,371 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:12,371 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284266940] [2019-10-13 21:18:12,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:12,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:12,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:12,964 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 21:18:12,965 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284266940] [2019-10-13 21:18:12,965 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:12,966 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:18:12,966 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105393588] [2019-10-13 21:18:12,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:18:12,975 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:12,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:18:12,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:12,993 INFO L87 Difference]: Start difference. First operand 470 states. Second operand 2 states. [2019-10-13 21:18:13,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:13,070 INFO L93 Difference]: Finished difference Result 634 states and 839 transitions. [2019-10-13 21:18:13,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:18:13,072 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-10-13 21:18:13,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:13,096 INFO L225 Difference]: With dead ends: 634 [2019-10-13 21:18:13,096 INFO L226 Difference]: Without dead ends: 423 [2019-10-13 21:18:13,102 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 21:18:13,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2019-10-13 21:18:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2019-10-13 21:18:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2019-10-13 21:18:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 564 transitions. [2019-10-13 21:18:13,189 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 564 transitions. Word has length 145 [2019-10-13 21:18:13,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:13,193 INFO L462 AbstractCegarLoop]: Abstraction has 423 states and 564 transitions. [2019-10-13 21:18:13,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:18:13,194 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 564 transitions. [2019-10-13 21:18:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 21:18:13,203 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:13,203 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 21:18:13,204 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:13,205 INFO L82 PathProgramCache]: Analyzing trace with hash -723770535, now seen corresponding path program 1 times [2019-10-13 21:18:13,205 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:13,205 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523513461] [2019-10-13 21:18:13,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:13,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:13,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:13,527 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 21:18:13,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523513461] [2019-10-13 21:18:13,528 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:13,528 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:13,528 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681378889] [2019-10-13 21:18:13,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:13,531 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:13,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:13,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:13,531 INFO L87 Difference]: Start difference. First operand 423 states and 564 transitions. Second operand 3 states. [2019-10-13 21:18:13,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:13,611 INFO L93 Difference]: Finished difference Result 617 states and 808 transitions. [2019-10-13 21:18:13,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:13,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-10-13 21:18:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:13,621 INFO L225 Difference]: With dead ends: 617 [2019-10-13 21:18:13,621 INFO L226 Difference]: Without dead ends: 426 [2019-10-13 21:18:13,624 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 21:18:13,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2019-10-13 21:18:13,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 425. [2019-10-13 21:18:13,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2019-10-13 21:18:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 566 transitions. [2019-10-13 21:18:13,658 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 566 transitions. Word has length 146 [2019-10-13 21:18:13,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:13,659 INFO L462 AbstractCegarLoop]: Abstraction has 425 states and 566 transitions. [2019-10-13 21:18:13,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 566 transitions. [2019-10-13 21:18:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 21:18:13,663 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:13,663 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] [2019-10-13 21:18:13,663 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:13,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:13,664 INFO L82 PathProgramCache]: Analyzing trace with hash -203920503, now seen corresponding path program 1 times [2019-10-13 21:18:13,664 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:13,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677609461] [2019-10-13 21:18:13,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:13,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:13,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:13,942 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 21:18:13,943 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677609461] [2019-10-13 21:18:13,943 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:13,943 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:13,943 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098655550] [2019-10-13 21:18:13,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:13,950 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:13,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:13,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:13,951 INFO L87 Difference]: Start difference. First operand 425 states and 566 transitions. Second operand 3 states. [2019-10-13 21:18:14,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:14,001 INFO L93 Difference]: Finished difference Result 826 states and 1130 transitions. [2019-10-13 21:18:14,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:14,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2019-10-13 21:18:14,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:14,006 INFO L225 Difference]: With dead ends: 826 [2019-10-13 21:18:14,007 INFO L226 Difference]: Without dead ends: 466 [2019-10-13 21:18:14,009 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 21:18:14,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2019-10-13 21:18:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 465. [2019-10-13 21:18:14,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-10-13 21:18:14,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 635 transitions. [2019-10-13 21:18:14,037 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 635 transitions. Word has length 156 [2019-10-13 21:18:14,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:14,037 INFO L462 AbstractCegarLoop]: Abstraction has 465 states and 635 transitions. [2019-10-13 21:18:14,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:14,038 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 635 transitions. [2019-10-13 21:18:14,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 21:18:14,041 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:14,042 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] [2019-10-13 21:18:14,042 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:14,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:14,042 INFO L82 PathProgramCache]: Analyzing trace with hash 203801419, now seen corresponding path program 1 times [2019-10-13 21:18:14,043 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:14,043 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753565733] [2019-10-13 21:18:14,043 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:14,043 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:14,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:14,206 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 21:18:14,206 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753565733] [2019-10-13 21:18:14,207 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:14,207 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:14,207 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406642533] [2019-10-13 21:18:14,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:14,208 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:14,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:14,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:14,209 INFO L87 Difference]: Start difference. First operand 465 states and 635 transitions. Second operand 3 states. [2019-10-13 21:18:14,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:14,245 INFO L93 Difference]: Finished difference Result 943 states and 1332 transitions. [2019-10-13 21:18:14,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:14,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2019-10-13 21:18:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:14,250 INFO L225 Difference]: With dead ends: 943 [2019-10-13 21:18:14,251 INFO L226 Difference]: Without dead ends: 543 [2019-10-13 21:18:14,253 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 21:18:14,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2019-10-13 21:18:14,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 542. [2019-10-13 21:18:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2019-10-13 21:18:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 767 transitions. [2019-10-13 21:18:14,281 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 767 transitions. Word has length 157 [2019-10-13 21:18:14,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:14,282 INFO L462 AbstractCegarLoop]: Abstraction has 542 states and 767 transitions. [2019-10-13 21:18:14,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:14,282 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 767 transitions. [2019-10-13 21:18:14,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:18:14,286 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:14,287 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 21:18:14,287 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:14,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:14,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1434303959, now seen corresponding path program 1 times [2019-10-13 21:18:14,288 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:14,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780951035] [2019-10-13 21:18:14,288 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:14,288 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:14,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:14,459 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 21:18:14,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780951035] [2019-10-13 21:18:14,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:14,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:14,460 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216260663] [2019-10-13 21:18:14,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:14,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:14,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:14,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:14,462 INFO L87 Difference]: Start difference. First operand 542 states and 767 transitions. Second operand 3 states. [2019-10-13 21:18:14,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:14,580 INFO L93 Difference]: Finished difference Result 1168 states and 1718 transitions. [2019-10-13 21:18:14,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:14,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-13 21:18:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:14,589 INFO L225 Difference]: With dead ends: 1168 [2019-10-13 21:18:14,590 INFO L226 Difference]: Without dead ends: 691 [2019-10-13 21:18:14,592 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 21:18:14,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-10-13 21:18:14,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 690. [2019-10-13 21:18:14,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 690 states. [2019-10-13 21:18:14,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1019 transitions. [2019-10-13 21:18:14,640 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1019 transitions. Word has length 158 [2019-10-13 21:18:14,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:14,641 INFO L462 AbstractCegarLoop]: Abstraction has 690 states and 1019 transitions. [2019-10-13 21:18:14,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:14,641 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1019 transitions. [2019-10-13 21:18:14,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:18:14,646 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:14,646 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 21:18:14,647 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:14,647 INFO L82 PathProgramCache]: Analyzing trace with hash 2050061483, now seen corresponding path program 1 times [2019-10-13 21:18:14,647 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:14,647 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961651494] [2019-10-13 21:18:14,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:14,648 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:14,648 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:14,814 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 21:18:14,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961651494] [2019-10-13 21:18:14,816 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:14,816 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:14,816 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593478978] [2019-10-13 21:18:14,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:14,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:14,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:14,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:14,818 INFO L87 Difference]: Start difference. First operand 690 states and 1019 transitions. Second operand 3 states. [2019-10-13 21:18:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:14,876 INFO L93 Difference]: Finished difference Result 1600 states and 2454 transitions. [2019-10-13 21:18:14,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:14,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-13 21:18:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:14,885 INFO L225 Difference]: With dead ends: 1600 [2019-10-13 21:18:14,886 INFO L226 Difference]: Without dead ends: 975 [2019-10-13 21:18:14,889 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 21:18:14,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2019-10-13 21:18:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 974. [2019-10-13 21:18:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 974 states. [2019-10-13 21:18:14,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1499 transitions. [2019-10-13 21:18:14,942 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1499 transitions. Word has length 159 [2019-10-13 21:18:14,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:14,944 INFO L462 AbstractCegarLoop]: Abstraction has 974 states and 1499 transitions. [2019-10-13 21:18:14,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1499 transitions. [2019-10-13 21:18:14,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-13 21:18:14,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:14,951 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] [2019-10-13 21:18:14,951 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:14,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:14,952 INFO L82 PathProgramCache]: Analyzing trace with hash 978028745, now seen corresponding path program 1 times [2019-10-13 21:18:14,952 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:14,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961323628] [2019-10-13 21:18:14,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:14,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:14,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:15,160 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 21:18:15,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961323628] [2019-10-13 21:18:15,161 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:15,161 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:15,161 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161399398] [2019-10-13 21:18:15,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:15,162 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:15,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:15,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:15,163 INFO L87 Difference]: Start difference. First operand 974 states and 1499 transitions. Second operand 3 states. [2019-10-13 21:18:15,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:15,234 INFO L93 Difference]: Finished difference Result 2428 states and 3854 transitions. [2019-10-13 21:18:15,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:15,235 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 160 [2019-10-13 21:18:15,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:15,247 INFO L225 Difference]: With dead ends: 2428 [2019-10-13 21:18:15,248 INFO L226 Difference]: Without dead ends: 1519 [2019-10-13 21:18:15,252 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 21:18:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2019-10-13 21:18:15,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1518. [2019-10-13 21:18:15,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1518 states. [2019-10-13 21:18:15,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2411 transitions. [2019-10-13 21:18:15,392 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2411 transitions. Word has length 160 [2019-10-13 21:18:15,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:15,397 INFO L462 AbstractCegarLoop]: Abstraction has 1518 states and 2411 transitions. [2019-10-13 21:18:15,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:15,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2411 transitions. [2019-10-13 21:18:15,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:18:15,409 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:15,410 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 21:18:15,410 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:15,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:15,411 INFO L82 PathProgramCache]: Analyzing trace with hash -588079097, now seen corresponding path program 1 times [2019-10-13 21:18:15,411 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:15,411 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322646036] [2019-10-13 21:18:15,412 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:15,412 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:15,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 21:18:16,575 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322646036] [2019-10-13 21:18:16,576 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:16,576 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2019-10-13 21:18:16,576 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128292626] [2019-10-13 21:18:16,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-13 21:18:16,577 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:16,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-13 21:18:16,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:16,579 INFO L87 Difference]: Start difference. First operand 1518 states and 2411 transitions. Second operand 35 states. [2019-10-13 21:18:21,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:21,676 INFO L93 Difference]: Finished difference Result 4496 states and 7322 transitions. [2019-10-13 21:18:21,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-13 21:18:21,676 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 162 [2019-10-13 21:18:21,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:21,703 INFO L225 Difference]: With dead ends: 4496 [2019-10-13 21:18:21,704 INFO L226 Difference]: Without dead ends: 3010 [2019-10-13 21:18:21,716 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=298, Invalid=4124, Unknown=0, NotChecked=0, Total=4422 [2019-10-13 21:18:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2019-10-13 21:18:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 2794. [2019-10-13 21:18:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2794 states. [2019-10-13 21:18:21,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 4641 transitions. [2019-10-13 21:18:21,910 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 4641 transitions. Word has length 162 [2019-10-13 21:18:21,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:21,911 INFO L462 AbstractCegarLoop]: Abstraction has 2794 states and 4641 transitions. [2019-10-13 21:18:21,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-13 21:18:21,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 4641 transitions. [2019-10-13 21:18:21,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:18:21,923 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:21,924 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-13 21:18:21,924 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:21,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:21,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1816996145, now seen corresponding path program 1 times [2019-10-13 21:18:21,925 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:21,925 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099051410] [2019-10-13 21:18:21,925 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:21,925 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:21,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:18:22,872 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099051410] [2019-10-13 21:18:22,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448309730] [2019-10-13 21:18:22,874 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 21:18:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:23,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:23,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:18:23,738 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:24,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:24,176 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:18:24,261 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:24,261 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [31, 7] total 39 [2019-10-13 21:18:24,261 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119516378] [2019-10-13 21:18:24,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:18:24,262 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:24,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:18:24,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:18:24,263 INFO L87 Difference]: Start difference. First operand 2794 states and 4641 transitions. Second operand 7 states. [2019-10-13 21:18:25,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:25,383 INFO L93 Difference]: Finished difference Result 5541 states and 9263 transitions. [2019-10-13 21:18:25,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:18:25,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2019-10-13 21:18:25,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:25,404 INFO L225 Difference]: With dead ends: 5541 [2019-10-13 21:18:25,404 INFO L226 Difference]: Without dead ends: 2798 [2019-10-13 21:18:25,422 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 316 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=1512, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 21:18:25,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2798 states. [2019-10-13 21:18:25,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2798 to 2798. [2019-10-13 21:18:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2798 states. [2019-10-13 21:18:25,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4646 transitions. [2019-10-13 21:18:25,595 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4646 transitions. Word has length 162 [2019-10-13 21:18:25,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:25,597 INFO L462 AbstractCegarLoop]: Abstraction has 2798 states and 4646 transitions. [2019-10-13 21:18:25,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:18:25,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4646 transitions. [2019-10-13 21:18:25,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 21:18:25,610 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:25,610 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:25,820 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:25,823 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:25,823 INFO L82 PathProgramCache]: Analyzing trace with hash 285060647, now seen corresponding path program 1 times [2019-10-13 21:18:25,823 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:25,824 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719208226] [2019-10-13 21:18:25,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:25,824 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:25,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:26,401 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:18:26,401 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719208226] [2019-10-13 21:18:26,401 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:26,402 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 21:18:26,402 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716253909] [2019-10-13 21:18:26,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:18:26,403 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:26,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:18:26,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:18:26,403 INFO L87 Difference]: Start difference. First operand 2798 states and 4646 transitions. Second operand 26 states. [2019-10-13 21:18:34,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:34,442 INFO L93 Difference]: Finished difference Result 6338 states and 10240 transitions. [2019-10-13 21:18:34,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-10-13 21:18:34,442 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 163 [2019-10-13 21:18:34,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:34,489 INFO L225 Difference]: With dead ends: 6338 [2019-10-13 21:18:34,489 INFO L226 Difference]: Without dead ends: 6156 [2019-10-13 21:18:34,497 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=724, Invalid=5596, Unknown=0, NotChecked=0, Total=6320 [2019-10-13 21:18:34,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6156 states. [2019-10-13 21:18:34,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6156 to 5733. [2019-10-13 21:18:34,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5733 states. [2019-10-13 21:18:34,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5733 states to 5733 states and 9484 transitions. [2019-10-13 21:18:34,957 INFO L78 Accepts]: Start accepts. Automaton has 5733 states and 9484 transitions. Word has length 163 [2019-10-13 21:18:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:34,961 INFO L462 AbstractCegarLoop]: Abstraction has 5733 states and 9484 transitions. [2019-10-13 21:18:34,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:18:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5733 states and 9484 transitions. [2019-10-13 21:18:35,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 21:18:35,000 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:35,001 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:35,001 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:35,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:35,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1982276322, now seen corresponding path program 1 times [2019-10-13 21:18:35,002 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:35,003 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186404996] [2019-10-13 21:18:35,003 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,003 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:35,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:35,211 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 21:18:35,212 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186404996] [2019-10-13 21:18:35,212 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:35,212 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:18:35,213 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620907245] [2019-10-13 21:18:35,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:18:35,213 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:35,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:18:35,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:18:35,214 INFO L87 Difference]: Start difference. First operand 5733 states and 9484 transitions. Second operand 10 states. [2019-10-13 21:18:35,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:35,515 INFO L93 Difference]: Finished difference Result 6315 states and 10241 transitions. [2019-10-13 21:18:35,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:18:35,515 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2019-10-13 21:18:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:35,564 INFO L225 Difference]: With dead ends: 6315 [2019-10-13 21:18:35,564 INFO L226 Difference]: Without dead ends: 5764 [2019-10-13 21:18:35,569 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:18:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5764 states. [2019-10-13 21:18:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5764 to 5759. [2019-10-13 21:18:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5759 states. [2019-10-13 21:18:35,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5759 states to 5759 states and 9521 transitions. [2019-10-13 21:18:35,878 INFO L78 Accepts]: Start accepts. Automaton has 5759 states and 9521 transitions. Word has length 164 [2019-10-13 21:18:35,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:35,879 INFO L462 AbstractCegarLoop]: Abstraction has 5759 states and 9521 transitions. [2019-10-13 21:18:35,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:18:35,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5759 states and 9521 transitions. [2019-10-13 21:18:35,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 21:18:35,906 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:35,906 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:35,906 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:35,907 INFO L82 PathProgramCache]: Analyzing trace with hash -2053345430, now seen corresponding path program 1 times [2019-10-13 21:18:35,907 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:35,907 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130078978] [2019-10-13 21:18:35,907 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:36,371 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 21:18:36,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130078978] [2019-10-13 21:18:36,373 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:36,373 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:18:36,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716926890] [2019-10-13 21:18:36,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:36,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:36,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:36,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:36,375 INFO L87 Difference]: Start difference. First operand 5759 states and 9521 transitions. Second operand 9 states. [2019-10-13 21:18:36,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:36,763 INFO L93 Difference]: Finished difference Result 6322 states and 10250 transitions. [2019-10-13 21:18:36,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:36,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2019-10-13 21:18:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:36,820 INFO L225 Difference]: With dead ends: 6322 [2019-10-13 21:18:36,821 INFO L226 Difference]: Without dead ends: 5765 [2019-10-13 21:18:36,825 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:18:36,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5765 states. [2019-10-13 21:18:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5765 to 5765. [2019-10-13 21:18:37,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5765 states. [2019-10-13 21:18:37,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5765 states to 5765 states and 9528 transitions. [2019-10-13 21:18:37,152 INFO L78 Accepts]: Start accepts. Automaton has 5765 states and 9528 transitions. Word has length 164 [2019-10-13 21:18:37,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:37,153 INFO L462 AbstractCegarLoop]: Abstraction has 5765 states and 9528 transitions. [2019-10-13 21:18:37,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5765 states and 9528 transitions. [2019-10-13 21:18:37,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 21:18:37,178 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:37,179 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:37,179 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:37,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:37,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1217467598, now seen corresponding path program 1 times [2019-10-13 21:18:37,180 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:37,180 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940715788] [2019-10-13 21:18:37,180 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:37,180 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:37,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:18:37,346 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940715788] [2019-10-13 21:18:37,346 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:37,346 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:18:37,347 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512199106] [2019-10-13 21:18:37,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:37,348 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:37,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:37,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:18:37,349 INFO L87 Difference]: Start difference. First operand 5765 states and 9528 transitions. Second operand 9 states. [2019-10-13 21:18:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:37,680 INFO L93 Difference]: Finished difference Result 5971 states and 9789 transitions. [2019-10-13 21:18:37,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:18:37,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 164 [2019-10-13 21:18:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:37,696 INFO L225 Difference]: With dead ends: 5971 [2019-10-13 21:18:37,696 INFO L226 Difference]: Without dead ends: 2823 [2019-10-13 21:18:37,707 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:18:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2019-10-13 21:18:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2821. [2019-10-13 21:18:38,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2821 states. [2019-10-13 21:18:38,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4676 transitions. [2019-10-13 21:18:38,369 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4676 transitions. Word has length 164 [2019-10-13 21:18:38,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:38,370 INFO L462 AbstractCegarLoop]: Abstraction has 2821 states and 4676 transitions. [2019-10-13 21:18:38,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:38,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4676 transitions. [2019-10-13 21:18:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 21:18:38,384 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:38,385 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:38,385 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:38,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:38,386 INFO L82 PathProgramCache]: Analyzing trace with hash -981229275, now seen corresponding path program 2 times [2019-10-13 21:18:38,386 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:38,386 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824811293] [2019-10-13 21:18:38,386 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:38,387 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:38,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:38,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-13 21:18:38,791 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824811293] [2019-10-13 21:18:38,791 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:38,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-10-13 21:18:38,792 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455537320] [2019-10-13 21:18:38,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 21:18:38,792 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:38,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 21:18:38,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:18:38,794 INFO L87 Difference]: Start difference. First operand 2821 states and 4676 transitions. Second operand 24 states.