java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:19:09,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:19:09,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:19:09,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:19:09,885 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:19:09,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:19:09,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:19:09,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:19:09,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:19:09,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:19:09,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:19:09,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:19:09,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:19:09,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:19:09,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:19:09,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:19:09,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:19:09,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:19:09,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:19:09,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:19:09,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:19:09,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:19:09,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:19:09,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:19:09,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:19:09,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:19:09,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:19:09,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:19:09,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:19:09,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:19:09,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:19:09,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:19:09,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:19:09,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:19:09,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:19:09,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:19:09,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:19:09,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:19:09,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:19:09,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:19:09,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:19:09,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:19:09,965 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:19:09,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:19:09,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:19:09,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:19:09,967 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:19:09,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:19:09,968 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:19:09,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:19:09,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:19:09,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:19:09,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:19:09,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:19:09,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:19:09,969 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:19:09,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:19:09,969 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:19:09,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:19:09,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:19:09,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:19:09,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:19:09,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:19:09,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:09,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:19:09,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:19:09,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:19:09,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:19:09,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:19:09,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:19:09,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:19:10,266 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:19:10,291 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:19:10,294 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:19:10,297 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:19:10,298 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:19:10,298 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product32.cil.c [2019-10-13 21:19:10,370 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930023f36/25b40840415448729b974f821f177d96/FLAGfd7784a47 [2019-10-13 21:19:11,015 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:19:11,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product32.cil.c [2019-10-13 21:19:11,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930023f36/25b40840415448729b974f821f177d96/FLAGfd7784a47 [2019-10-13 21:19:11,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930023f36/25b40840415448729b974f821f177d96 [2019-10-13 21:19:11,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:19:11,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:19:11,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:11,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:19:11,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:19:11,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:11" (1/1) ... [2019-10-13 21:19:11,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f7e0ad1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:11, skipping insertion in model container [2019-10-13 21:19:11,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:11" (1/1) ... [2019-10-13 21:19:11,221 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:19:11,305 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:19:12,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:12,174 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:19:12,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:12,398 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:19:12,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:12 WrapperNode [2019-10-13 21:19:12,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:12,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:19:12,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:19:12,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:19:12,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:12" (1/1) ... [2019-10-13 21:19:12,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:12" (1/1) ... [2019-10-13 21:19:12,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:12" (1/1) ... [2019-10-13 21:19:12,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:12" (1/1) ... [2019-10-13 21:19:12,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:12" (1/1) ... [2019-10-13 21:19:12,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:12" (1/1) ... [2019-10-13 21:19:12,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:12" (1/1) ... [2019-10-13 21:19:12,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:19:12,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:19:12,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:19:12,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:19:12,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:12,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:19:12,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:19:12,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:12,653 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:19:12,653 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:19:12,654 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:19:12,654 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:19:12,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:19:12,654 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:19:12,654 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:19:12,655 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:19:12,655 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:19:12,655 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:19:12,655 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:19:12,655 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:19:12,656 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:19:12,656 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:19:12,656 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:19:12,656 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:19:12,659 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:19:12,659 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:19:12,660 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:19:12,660 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:19:12,660 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:19:12,660 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:19:12,660 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:19:12,660 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:19:12,661 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:19:12,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:19:12,661 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:19:12,661 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:19:12,661 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:19:12,661 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:19:12,662 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:19:12,662 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:19:12,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:19:12,662 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:19:12,662 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:19:12,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:19:12,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:19:12,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:19:12,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:19:12,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:19:12,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:19:12,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:19:12,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:19:12,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:19:12,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:19:12,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:19:12,664 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:19:12,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:19:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:19:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:19:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:19:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:19:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:19:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:19:12,665 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:19:12,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:19:12,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:19:12,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:19:12,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:19:12,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:19:12,666 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:19:12,667 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:19:12,667 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:19:12,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:19:12,667 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:19:12,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:19:12,667 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:19:12,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:19:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:19:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:19:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:19:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:19:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:19:12,668 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:19:12,669 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:19:12,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:19:12,669 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:19:12,669 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:19:12,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:19:12,669 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:19:12,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:19:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:19:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:19:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:19:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:19:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:19:12,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:19:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:12,671 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:19:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:19:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:19:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:19:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:19:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:12,672 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:19:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:19:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:19:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:19:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:19:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:19:12,673 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:19:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:19:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:19:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:19:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:19:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:19:12,674 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:19:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:19:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:19:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:19:12,675 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:19:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:19:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:19:12,675 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:19:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:19:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:19:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:19:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:19:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:19:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:19:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:19:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:19:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:19:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:19:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:19:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:19:12,677 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:19:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:19:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:19:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:19:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:19:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:19:12,678 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:19:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:19:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:19:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:19:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:19:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:19:12,679 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:19:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:19:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:19:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:19:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:19:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:19:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:19:12,680 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:19:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:19:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:19:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:19:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:19:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:19:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:19:12,681 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:19:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:19:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:19:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:19:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:19:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:19:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:19:12,682 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:19:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:19:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:19:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:19:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:19:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:19:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:19:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:19:12,683 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:19:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:19:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:19:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:19:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:19:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:19:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:19:12,684 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:19:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:19:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:19:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:19:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:19:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:19:12,685 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:19:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:19:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:19:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:19:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:19:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:19:12,686 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:19:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:19:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:19:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:19:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:19:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:19:12,687 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:19:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:19:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:19:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:19:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:19:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:19:12,688 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:19:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:19:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:19:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:19:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:19:12,689 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:19:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:19:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:19:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:19:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:19:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:19:12,690 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:19:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:19:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:19:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:19:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:19:12,691 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:19:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:19:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:19:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:19:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:19:12,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:19:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:19:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:19:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:19:12,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:19:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:19:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:19:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:19:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:19:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:19:12,694 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:19:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:19:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:19:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:19:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:19:12,695 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:19:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:19:12,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:19:15,392 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:19:15,393 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:19:15,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:15 BoogieIcfgContainer [2019-10-13 21:19:15,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:19:15,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:19:15,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:19:15,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:19:15,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:19:11" (1/3) ... [2019-10-13 21:19:15,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c0150e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:15, skipping insertion in model container [2019-10-13 21:19:15,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:12" (2/3) ... [2019-10-13 21:19:15,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c0150e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:15, skipping insertion in model container [2019-10-13 21:19:15,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:15" (3/3) ... [2019-10-13 21:19:15,411 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product32.cil.c [2019-10-13 21:19:15,422 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:19:15,436 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:19:15,449 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:19:15,497 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:19:15,498 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:19:15,498 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:19:15,505 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:19:15,506 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:19:15,506 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:19:15,507 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:19:15,507 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:19:15,550 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states. [2019-10-13 21:19:15,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 21:19:15,582 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:15,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:15,586 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:15,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:15,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1195808047, now seen corresponding path program 1 times [2019-10-13 21:19:15,603 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:15,604 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046143167] [2019-10-13 21:19:15,604 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,604 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:15,605 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:16,278 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:16,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046143167] [2019-10-13 21:19:16,279 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:16,280 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:19:16,280 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930572874] [2019-10-13 21:19:16,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:19:16,287 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:16,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:19:16,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:16,305 INFO L87 Difference]: Start difference. First operand 641 states. Second operand 2 states. [2019-10-13 21:19:16,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:16,384 INFO L93 Difference]: Finished difference Result 912 states and 1235 transitions. [2019-10-13 21:19:16,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:19:16,386 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 167 [2019-10-13 21:19:16,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:16,433 INFO L225 Difference]: With dead ends: 912 [2019-10-13 21:19:16,436 INFO L226 Difference]: Without dead ends: 584 [2019-10-13 21:19:16,450 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:16,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2019-10-13 21:19:16,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2019-10-13 21:19:16,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2019-10-13 21:19:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 796 transitions. [2019-10-13 21:19:16,606 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 796 transitions. Word has length 167 [2019-10-13 21:19:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:16,610 INFO L462 AbstractCegarLoop]: Abstraction has 584 states and 796 transitions. [2019-10-13 21:19:16,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:19:16,610 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 796 transitions. [2019-10-13 21:19:16,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-13 21:19:16,616 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:16,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:16,617 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:16,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:16,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1792136893, now seen corresponding path program 1 times [2019-10-13 21:19:16,619 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:16,619 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944459898] [2019-10-13 21:19:16,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:16,620 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:16,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:16,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:17,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944459898] [2019-10-13 21:19:17,066 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:17,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:17,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860363556] [2019-10-13 21:19:17,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:17,076 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:17,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:17,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:17,077 INFO L87 Difference]: Start difference. First operand 584 states and 796 transitions. Second operand 3 states. [2019-10-13 21:19:17,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:17,202 INFO L93 Difference]: Finished difference Result 895 states and 1200 transitions. [2019-10-13 21:19:17,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:17,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-10-13 21:19:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:17,217 INFO L225 Difference]: With dead ends: 895 [2019-10-13 21:19:17,218 INFO L226 Difference]: Without dead ends: 587 [2019-10-13 21:19:17,222 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:17,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2019-10-13 21:19:17,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 586. [2019-10-13 21:19:17,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2019-10-13 21:19:17,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 798 transitions. [2019-10-13 21:19:17,286 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 798 transitions. Word has length 168 [2019-10-13 21:19:17,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:17,288 INFO L462 AbstractCegarLoop]: Abstraction has 586 states and 798 transitions. [2019-10-13 21:19:17,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:17,288 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 798 transitions. [2019-10-13 21:19:17,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-13 21:19:17,299 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:17,299 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:17,300 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:17,300 INFO L82 PathProgramCache]: Analyzing trace with hash -584126611, now seen corresponding path program 1 times [2019-10-13 21:19:17,301 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:17,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211419954] [2019-10-13 21:19:17,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:17,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:17,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:17,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211419954] [2019-10-13 21:19:17,594 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:17,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:17,594 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691608658] [2019-10-13 21:19:17,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:17,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:17,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:17,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:17,600 INFO L87 Difference]: Start difference. First operand 586 states and 798 transitions. Second operand 3 states. [2019-10-13 21:19:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:17,655 INFO L93 Difference]: Finished difference Result 1150 states and 1597 transitions. [2019-10-13 21:19:17,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:17,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2019-10-13 21:19:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:17,666 INFO L225 Difference]: With dead ends: 1150 [2019-10-13 21:19:17,666 INFO L226 Difference]: Without dead ends: 629 [2019-10-13 21:19:17,669 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:17,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-10-13 21:19:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2019-10-13 21:19:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-13 21:19:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 870 transitions. [2019-10-13 21:19:17,714 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 870 transitions. Word has length 178 [2019-10-13 21:19:17,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:17,718 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 870 transitions. [2019-10-13 21:19:17,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 870 transitions. [2019-10-13 21:19:17,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 21:19:17,727 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:17,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:17,727 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:17,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:17,729 INFO L82 PathProgramCache]: Analyzing trace with hash 571727363, now seen corresponding path program 1 times [2019-10-13 21:19:17,730 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:17,730 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989048322] [2019-10-13 21:19:17,730 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:17,730 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:17,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:17,942 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 21:19:17,943 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989048322] [2019-10-13 21:19:17,943 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:17,943 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:17,943 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324593208] [2019-10-13 21:19:17,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:17,944 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:17,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:17,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:17,945 INFO L87 Difference]: Start difference. First operand 628 states and 870 transitions. Second operand 3 states. [2019-10-13 21:19:17,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:17,998 INFO L93 Difference]: Finished difference Result 1273 states and 1808 transitions. [2019-10-13 21:19:17,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:17,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-10-13 21:19:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:18,006 INFO L225 Difference]: With dead ends: 1273 [2019-10-13 21:19:18,006 INFO L226 Difference]: Without dead ends: 710 [2019-10-13 21:19:18,009 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 21:19:18,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2019-10-13 21:19:18,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 709. [2019-10-13 21:19:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 709 states. [2019-10-13 21:19:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1008 transitions. [2019-10-13 21:19:18,054 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1008 transitions. Word has length 179 [2019-10-13 21:19:18,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:18,054 INFO L462 AbstractCegarLoop]: Abstraction has 709 states and 1008 transitions. [2019-10-13 21:19:18,054 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:18,055 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1008 transitions. [2019-10-13 21:19:18,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 21:19:18,061 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:18,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:18,062 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:18,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:18,063 INFO L82 PathProgramCache]: Analyzing trace with hash 164272269, now seen corresponding path program 1 times [2019-10-13 21:19:18,063 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:18,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312352847] [2019-10-13 21:19:18,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:18,065 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:18,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:18,286 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312352847] [2019-10-13 21:19:18,287 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:18,287 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:18,287 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503960888] [2019-10-13 21:19:18,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:18,288 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:18,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:18,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:18,289 INFO L87 Difference]: Start difference. First operand 709 states and 1008 transitions. Second operand 3 states. [2019-10-13 21:19:18,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:18,341 INFO L93 Difference]: Finished difference Result 1510 states and 2212 transitions. [2019-10-13 21:19:18,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:18,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-10-13 21:19:18,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:18,350 INFO L225 Difference]: With dead ends: 1510 [2019-10-13 21:19:18,350 INFO L226 Difference]: Without dead ends: 866 [2019-10-13 21:19:18,354 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:18,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2019-10-13 21:19:18,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 865. [2019-10-13 21:19:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 865 states. [2019-10-13 21:19:18,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1272 transitions. [2019-10-13 21:19:18,401 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1272 transitions. Word has length 180 [2019-10-13 21:19:18,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:18,402 INFO L462 AbstractCegarLoop]: Abstraction has 865 states and 1272 transitions. [2019-10-13 21:19:18,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:18,402 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1272 transitions. [2019-10-13 21:19:18,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 21:19:18,407 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:18,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:18,408 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:18,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:18,408 INFO L82 PathProgramCache]: Analyzing trace with hash -2136404765, now seen corresponding path program 1 times [2019-10-13 21:19:18,408 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:18,409 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255794768] [2019-10-13 21:19:18,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:18,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:18,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:18,639 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:18,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255794768] [2019-10-13 21:19:18,641 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:18,641 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:18,641 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195128919] [2019-10-13 21:19:18,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:18,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:18,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:18,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:18,643 INFO L87 Difference]: Start difference. First operand 865 states and 1272 transitions. Second operand 3 states. [2019-10-13 21:19:18,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:18,704 INFO L93 Difference]: Finished difference Result 1966 states and 2984 transitions. [2019-10-13 21:19:18,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:18,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2019-10-13 21:19:18,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:18,713 INFO L225 Difference]: With dead ends: 1966 [2019-10-13 21:19:18,713 INFO L226 Difference]: Without dead ends: 1166 [2019-10-13 21:19:18,717 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:18,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2019-10-13 21:19:18,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1165. [2019-10-13 21:19:18,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2019-10-13 21:19:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1776 transitions. [2019-10-13 21:19:18,773 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1776 transitions. Word has length 181 [2019-10-13 21:19:18,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:18,775 INFO L462 AbstractCegarLoop]: Abstraction has 1165 states and 1776 transitions. [2019-10-13 21:19:18,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1776 transitions. [2019-10-13 21:19:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-13 21:19:18,782 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:18,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:18,783 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:18,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:18,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1850189406, now seen corresponding path program 1 times [2019-10-13 21:19:18,783 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:18,783 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923856854] [2019-10-13 21:19:18,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:18,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:18,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:19:19,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923856854] [2019-10-13 21:19:19,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:19,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:19,011 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098677406] [2019-10-13 21:19:19,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:19,012 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:19,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:19,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:19,013 INFO L87 Difference]: Start difference. First operand 1165 states and 1776 transitions. Second operand 3 states. [2019-10-13 21:19:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:19,082 INFO L93 Difference]: Finished difference Result 1601 states and 2368 transitions. [2019-10-13 21:19:19,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:19,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-10-13 21:19:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:19,091 INFO L225 Difference]: With dead ends: 1601 [2019-10-13 21:19:19,091 INFO L226 Difference]: Without dead ends: 1306 [2019-10-13 21:19:19,093 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:19,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2019-10-13 21:19:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1305. [2019-10-13 21:19:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2019-10-13 21:19:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1973 transitions. [2019-10-13 21:19:19,176 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1973 transitions. Word has length 184 [2019-10-13 21:19:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:19,179 INFO L462 AbstractCegarLoop]: Abstraction has 1305 states and 1973 transitions. [2019-10-13 21:19:19,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1973 transitions. [2019-10-13 21:19:19,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-10-13 21:19:19,194 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:19,194 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:19,195 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:19,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:19,195 INFO L82 PathProgramCache]: Analyzing trace with hash -576854632, now seen corresponding path program 1 times [2019-10-13 21:19:19,195 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:19,196 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698792895] [2019-10-13 21:19:19,196 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:19,196 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:19,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-13 21:19:19,569 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698792895] [2019-10-13 21:19:19,569 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:19,569 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:19:19,569 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058543033] [2019-10-13 21:19:19,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:19:19,570 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:19,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:19:19,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:19:19,571 INFO L87 Difference]: Start difference. First operand 1305 states and 1973 transitions. Second operand 6 states. [2019-10-13 21:19:20,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:20,546 INFO L93 Difference]: Finished difference Result 2958 states and 4439 transitions. [2019-10-13 21:19:20,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:19:20,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 329 [2019-10-13 21:19:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:20,565 INFO L225 Difference]: With dead ends: 2958 [2019-10-13 21:19:20,565 INFO L226 Difference]: Without dead ends: 2561 [2019-10-13 21:19:20,568 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:19:20,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2019-10-13 21:19:20,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2550. [2019-10-13 21:19:20,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2550 states. [2019-10-13 21:19:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3896 transitions. [2019-10-13 21:19:20,720 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3896 transitions. Word has length 329 [2019-10-13 21:19:20,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:20,721 INFO L462 AbstractCegarLoop]: Abstraction has 2550 states and 3896 transitions. [2019-10-13 21:19:20,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:19:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3896 transitions. [2019-10-13 21:19:20,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2019-10-13 21:19:20,739 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:20,739 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:20,739 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:20,740 INFO L82 PathProgramCache]: Analyzing trace with hash 172382507, now seen corresponding path program 1 times [2019-10-13 21:19:20,740 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:20,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280901245] [2019-10-13 21:19:20,741 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,741 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:21,062 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-10-13 21:19:21,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280901245] [2019-10-13 21:19:21,062 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:21,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:19:21,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334596304] [2019-10-13 21:19:21,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:19:21,064 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:21,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:19:21,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:19:21,065 INFO L87 Difference]: Start difference. First operand 2550 states and 3896 transitions. Second operand 11 states. [2019-10-13 21:19:21,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:21,655 INFO L93 Difference]: Finished difference Result 3341 states and 4945 transitions. [2019-10-13 21:19:21,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:19:21,656 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 330 [2019-10-13 21:19:21,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:21,676 INFO L225 Difference]: With dead ends: 3341 [2019-10-13 21:19:21,676 INFO L226 Difference]: Without dead ends: 2524 [2019-10-13 21:19:21,681 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:19:21,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2524 states. [2019-10-13 21:19:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2524 to 2520. [2019-10-13 21:19:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2520 states. [2019-10-13 21:19:21,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 3845 transitions. [2019-10-13 21:19:21,846 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 3845 transitions. Word has length 330 [2019-10-13 21:19:21,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:21,847 INFO L462 AbstractCegarLoop]: Abstraction has 2520 states and 3845 transitions. [2019-10-13 21:19:21,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:19:21,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 3845 transitions. [2019-10-13 21:19:21,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2019-10-13 21:19:21,870 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:21,871 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:21,871 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:21,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:21,872 INFO L82 PathProgramCache]: Analyzing trace with hash -398996817, now seen corresponding path program 1 times [2019-10-13 21:19:21,872 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:21,872 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963555476] [2019-10-13 21:19:21,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:21,873 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:21,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-10-13 21:19:22,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963555476] [2019-10-13 21:19:22,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:22,127 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:22,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511846528] [2019-10-13 21:19:22,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:22,128 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:22,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:22,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:22,129 INFO L87 Difference]: Start difference. First operand 2520 states and 3845 transitions. Second operand 3 states. [2019-10-13 21:19:22,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:22,343 INFO L93 Difference]: Finished difference Result 6129 states and 9587 transitions. [2019-10-13 21:19:22,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:22,344 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 356 [2019-10-13 21:19:22,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:22,367 INFO L225 Difference]: With dead ends: 6129 [2019-10-13 21:19:22,367 INFO L226 Difference]: Without dead ends: 3674 [2019-10-13 21:19:22,376 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:22,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2019-10-13 21:19:22,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3672. [2019-10-13 21:19:22,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2019-10-13 21:19:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 5781 transitions. [2019-10-13 21:19:22,585 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 5781 transitions. Word has length 356 [2019-10-13 21:19:22,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:22,585 INFO L462 AbstractCegarLoop]: Abstraction has 3672 states and 5781 transitions. [2019-10-13 21:19:22,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:22,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 5781 transitions. [2019-10-13 21:19:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2019-10-13 21:19:22,606 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:22,607 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:22,607 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:22,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:22,608 INFO L82 PathProgramCache]: Analyzing trace with hash 717459013, now seen corresponding path program 1 times [2019-10-13 21:19:22,608 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:22,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870538844] [2019-10-13 21:19:22,609 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:22,609 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:22,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-10-13 21:19:22,820 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870538844] [2019-10-13 21:19:22,820 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:22,820 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:22,820 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194740445] [2019-10-13 21:19:22,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:22,821 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:22,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:22,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:22,822 INFO L87 Difference]: Start difference. First operand 3672 states and 5781 transitions. Second operand 3 states. [2019-10-13 21:19:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:23,145 INFO L93 Difference]: Finished difference Result 9617 states and 15427 transitions. [2019-10-13 21:19:23,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:23,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 357 [2019-10-13 21:19:23,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:23,249 INFO L225 Difference]: With dead ends: 9617 [2019-10-13 21:19:23,250 INFO L226 Difference]: Without dead ends: 6010 [2019-10-13 21:19:23,263 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:23,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6010 states. [2019-10-13 21:19:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6010 to 6008. [2019-10-13 21:19:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6008 states. [2019-10-13 21:19:23,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6008 states to 6008 states and 9653 transitions. [2019-10-13 21:19:23,643 INFO L78 Accepts]: Start accepts. Automaton has 6008 states and 9653 transitions. Word has length 357 [2019-10-13 21:19:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:23,644 INFO L462 AbstractCegarLoop]: Abstraction has 6008 states and 9653 transitions. [2019-10-13 21:19:23,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:23,644 INFO L276 IsEmpty]: Start isEmpty. Operand 6008 states and 9653 transitions. [2019-10-13 21:19:23,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2019-10-13 21:19:23,691 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:23,691 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:23,691 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:23,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:23,692 INFO L82 PathProgramCache]: Analyzing trace with hash -419997698, now seen corresponding path program 1 times [2019-10-13 21:19:23,692 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:23,692 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702874233] [2019-10-13 21:19:23,693 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:23,693 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:23,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:24,289 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:19:24,290 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702874233] [2019-10-13 21:19:24,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333492340] [2019-10-13 21:19:24,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:25,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 3895 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:25,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-13 21:19:25,744 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:26,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:26,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:27,360 WARN L191 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-10-13 21:19:27,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:19:27,559 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:27,559 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:19:27,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432130945] [2019-10-13 21:19:27,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:27,560 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:27,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:27,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:27,562 INFO L87 Difference]: Start difference. First operand 6008 states and 9653 transitions. Second operand 9 states. [2019-10-13 21:19:29,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:29,312 INFO L93 Difference]: Finished difference Result 11994 states and 19286 transitions. [2019-10-13 21:19:29,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:29,313 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 338 [2019-10-13 21:19:29,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:29,366 INFO L225 Difference]: With dead ends: 11994 [2019-10-13 21:19:29,366 INFO L226 Difference]: Without dead ends: 6022 [2019-10-13 21:19:29,394 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 665 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:19:29,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6022 states. [2019-10-13 21:19:29,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6022 to 6022. [2019-10-13 21:19:29,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6022 states. [2019-10-13 21:19:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 9671 transitions. [2019-10-13 21:19:29,813 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 9671 transitions. Word has length 338 [2019-10-13 21:19:29,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:29,815 INFO L462 AbstractCegarLoop]: Abstraction has 6022 states and 9671 transitions. [2019-10-13 21:19:29,815 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:29,816 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 9671 transitions. [2019-10-13 21:19:29,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2019-10-13 21:19:29,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:29,855 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:30,066 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:30,067 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:30,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1582443900, now seen corresponding path program 1 times [2019-10-13 21:19:30,068 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:30,069 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507442373] [2019-10-13 21:19:30,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:30,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:30,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:19:30,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507442373] [2019-10-13 21:19:30,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160321184] [2019-10-13 21:19:30,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:31,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 3896 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:31,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-10-13 21:19:31,978 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:32,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:32,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:19:32,906 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:32,907 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:19:32,907 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443561938] [2019-10-13 21:19:32,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:32,908 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:32,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:32,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:32,910 INFO L87 Difference]: Start difference. First operand 6022 states and 9671 transitions. Second operand 7 states. [2019-10-13 21:19:34,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:34,212 INFO L93 Difference]: Finished difference Result 11997 states and 19355 transitions. [2019-10-13 21:19:34,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:34,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 339 [2019-10-13 21:19:34,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:34,248 INFO L225 Difference]: With dead ends: 11997 [2019-10-13 21:19:34,249 INFO L226 Difference]: Without dead ends: 6026 [2019-10-13 21:19:34,279 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 672 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:19:34,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6026 states. [2019-10-13 21:19:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6026 to 6026. [2019-10-13 21:19:34,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6026 states. [2019-10-13 21:19:34,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 9676 transitions. [2019-10-13 21:19:34,609 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 9676 transitions. Word has length 339 [2019-10-13 21:19:34,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:34,610 INFO L462 AbstractCegarLoop]: Abstraction has 6026 states and 9676 transitions. [2019-10-13 21:19:34,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:34,610 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 9676 transitions. [2019-10-13 21:19:34,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2019-10-13 21:19:34,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:34,650 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:34,859 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:34,859 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:34,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:34,860 INFO L82 PathProgramCache]: Analyzing trace with hash 224975046, now seen corresponding path program 1 times [2019-10-13 21:19:34,861 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:34,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153875017] [2019-10-13 21:19:34,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:34,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:34,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:35,502 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-13 21:19:35,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153875017] [2019-10-13 21:19:35,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525266374] [2019-10-13 21:19:35,504 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:36,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 3897 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:36,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-10-13 21:19:36,623 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:37,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:37,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:37,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-10-13 21:19:37,761 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:37,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:19:37,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017503346] [2019-10-13 21:19:37,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:37,763 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:37,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:37,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:19:37,764 INFO L87 Difference]: Start difference. First operand 6026 states and 9676 transitions. Second operand 16 states. [2019-10-13 21:19:40,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:40,293 INFO L93 Difference]: Finished difference Result 12003 states and 19294 transitions. [2019-10-13 21:19:40,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:40,293 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 340 [2019-10-13 21:19:40,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:40,317 INFO L225 Difference]: With dead ends: 12003 [2019-10-13 21:19:40,317 INFO L226 Difference]: Without dead ends: 6038 [2019-10-13 21:19:40,341 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 669 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:19:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6038 states. [2019-10-13 21:19:40,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6038 to 6036. [2019-10-13 21:19:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6036 states. [2019-10-13 21:19:40,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6036 states to 6036 states and 9687 transitions. [2019-10-13 21:19:40,692 INFO L78 Accepts]: Start accepts. Automaton has 6036 states and 9687 transitions. Word has length 340 [2019-10-13 21:19:40,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:40,692 INFO L462 AbstractCegarLoop]: Abstraction has 6036 states and 9687 transitions. [2019-10-13 21:19:40,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 6036 states and 9687 transitions. [2019-10-13 21:19:40,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2019-10-13 21:19:40,736 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:40,736 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:40,948 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:40,948 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:40,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:40,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1540915710, now seen corresponding path program 2 times [2019-10-13 21:19:40,950 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:40,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990576411] [2019-10-13 21:19:40,957 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:40,957 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:40,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat