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_spec6_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:17:03,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:17:03,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:17:03,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:17:03,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:17:03,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:17:03,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:17:03,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:17:03,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:17:03,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:17:03,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:17:03,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:17:03,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:17:03,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:17:03,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:17:03,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:17:03,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:17:03,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:17:03,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:17:03,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:17:03,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:17:03,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:17:03,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:17:03,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:17:03,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:17:03,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:17:03,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:17:03,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:17:03,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:17:03,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:17:03,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:17:03,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:17:03,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:17:03,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:17:03,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:17:03,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:17:03,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:17:03,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:17:03,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:17:03,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:17:03,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:17:03,289 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 21:17:03,307 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:17:03,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:17:03,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:17:03,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:17:03,309 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:17:03,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:17:03,310 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:17:03,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:17:03,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:17:03,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:17:03,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:17:03,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:17:03,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:17:03,311 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:17:03,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:17:03,312 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:17:03,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:17:03,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:17:03,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:17:03,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:17:03,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:17:03,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:17:03,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:17:03,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:17:03,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:17:03,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:17:03,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:17:03,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:17:03,314 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 21:17:03,630 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:17:03,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:17:03,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:17:03,649 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:17:03,650 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:17:03,651 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product15.cil.c [2019-10-13 21:17:03,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab633f632/eef33e59237f46c99568683ea4490f75/FLAG7404ff944 [2019-10-13 21:17:04,445 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:17:04,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product15.cil.c [2019-10-13 21:17:04,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab633f632/eef33e59237f46c99568683ea4490f75/FLAG7404ff944 [2019-10-13 21:17:04,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab633f632/eef33e59237f46c99568683ea4490f75 [2019-10-13 21:17:04,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:17:04,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:17:04,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:17:04,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:17:04,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:17:04,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:04" (1/1) ... [2019-10-13 21:17:04,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371dfc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:04, skipping insertion in model container [2019-10-13 21:17:04,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:04" (1/1) ... [2019-10-13 21:17:04,646 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:17:04,731 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:17:05,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:17:05,486 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:17:05,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:17:05,759 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:17:05,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:05 WrapperNode [2019-10-13 21:17:05,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:17:05,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:17:05,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:17:05,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:17:05,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:05" (1/1) ... [2019-10-13 21:17:05,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:05" (1/1) ... [2019-10-13 21:17:05,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:05" (1/1) ... [2019-10-13 21:17:05,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:05" (1/1) ... [2019-10-13 21:17:05,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:05" (1/1) ... [2019-10-13 21:17:05,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:05" (1/1) ... [2019-10-13 21:17:05,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:05" (1/1) ... [2019-10-13 21:17:05,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:17:05,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:17:05,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:17:05,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:17:05,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:17:06,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:17:06,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:17:06,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:17:06,031 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:17:06,031 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:17:06,032 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:17:06,032 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:17:06,032 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:17:06,032 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:17:06,032 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:17:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-13 21:17:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:17:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:17:06,033 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:17:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:17:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:17:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:17:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:17:06,034 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:17:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:17:06,035 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:17:06,036 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:17:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:17:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:17:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:17:06,037 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:17:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:17:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:17:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:17:06,038 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:17:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:17:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:17:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:17:06,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:17:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:17:06,040 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:17:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:17:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:17:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:17:06,041 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:17:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:17:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:17:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:17:06,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:17:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:17:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:17:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:17:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:17:06,043 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:17:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:17:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:17:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:17:06,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:17:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:17:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:17:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:17:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:17:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:17:06,045 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:17:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:17:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:17:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:17:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:17:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:17:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:17:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:17:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:17:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:17:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:17:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:17:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:17:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:17:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:17:06,049 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:17:06,050 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:17:06,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:17:06,050 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:17:06,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:17:06,051 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:17:06,051 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:17:06,052 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:17:06,052 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:17:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-13 21:17:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-13 21:17:06,053 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:17:06,054 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:17:06,055 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:17:06,055 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:17:06,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:17:06,056 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:17:06,056 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:17:06,056 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:17:06,057 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:17:06,057 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:17:06,057 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:17:06,057 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:17:06,057 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:17:06,058 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:17:06,058 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:17:06,058 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:17:06,058 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:17:06,058 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:17:06,058 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:17:06,058 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:17:06,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:17:06,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:17:06,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:17:06,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:17:06,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:17:06,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:17:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:17:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:17:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:17:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:17:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:17:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:17:06,060 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:17:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:17:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:17:06,061 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:17:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:17:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:17:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:17:06,062 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:17:06,063 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:17:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:17:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:17:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:17:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:17:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:17:06,064 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:17:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:17:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:17:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:17:06,065 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:17:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:17:06,066 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:17:06,069 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:17:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:17:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:17:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:17:06,070 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:17:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:17:06,071 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:17:06,078 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:17:06,079 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:17:06,079 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:17:06,079 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:17:06,080 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:17:06,080 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:17:06,080 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:17:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:17:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:17:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-13 21:17:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:17:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:17:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:17:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-13 21:17:06,081 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-13 21:17:06,082 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:17:06,082 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:17:06,082 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:17:06,082 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:17:06,082 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:17:06,082 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:17:06,082 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:17:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:17:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:17:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:17:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:17:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:17:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:17:06,083 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:17:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:17:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:17:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:17:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:17:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:17:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:17:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:17:06,084 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:17:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:17:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:17:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:17:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:17:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:17:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:17:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:17:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:17:06,085 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:17:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:17:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:17:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:17:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:17:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:17:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:17:06,086 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:17:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:17:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:17:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:17:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:17:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:17:06,087 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:17:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:17:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:17:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:17:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:17:06,088 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:17:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:17:06,090 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:17:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:17:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:17:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:17:06,091 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:17:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:17:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:17:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:17:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:17:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:17:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:17:06,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:17:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:17:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:17:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:17:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:17:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:17:06,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:17:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:17:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:17:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:17:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:17:06,094 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:17:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:17:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:17:06,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:17:08,336 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:17:08,337 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:17:08,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:08 BoogieIcfgContainer [2019-10-13 21:17:08,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:17:08,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:17:08,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:17:08,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:17:08,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:17:04" (1/3) ... [2019-10-13 21:17:08,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fb4501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:08, skipping insertion in model container [2019-10-13 21:17:08,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:05" (2/3) ... [2019-10-13 21:17:08,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fb4501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:08, skipping insertion in model container [2019-10-13 21:17:08,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:08" (3/3) ... [2019-10-13 21:17:08,352 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product15.cil.c [2019-10-13 21:17:08,363 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:17:08,379 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:17:08,395 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:17:08,448 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:17:08,448 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:17:08,448 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:17:08,448 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:17:08,448 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:17:08,449 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:17:08,449 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:17:08,449 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:17:08,491 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states. [2019-10-13 21:17:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 21:17:08,525 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:08,527 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:08,532 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:08,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:08,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1208653577, now seen corresponding path program 1 times [2019-10-13 21:17:08,552 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:08,553 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66206262] [2019-10-13 21:17:08,553 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:08,553 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:08,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:17:09,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66206262] [2019-10-13 21:17:09,230 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:09,230 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:17:09,231 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964482168] [2019-10-13 21:17:09,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:17:09,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:09,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:17:09,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:17:09,256 INFO L87 Difference]: Start difference. First operand 474 states. Second operand 2 states. [2019-10-13 21:17:09,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:09,330 INFO L93 Difference]: Finished difference Result 642 states and 852 transitions. [2019-10-13 21:17:09,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:17:09,333 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 176 [2019-10-13 21:17:09,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:09,357 INFO L225 Difference]: With dead ends: 642 [2019-10-13 21:17:09,357 INFO L226 Difference]: Without dead ends: 427 [2019-10-13 21:17:09,363 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 21:17:09,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-10-13 21:17:09,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2019-10-13 21:17:09,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2019-10-13 21:17:09,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 570 transitions. [2019-10-13 21:17:09,451 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 570 transitions. Word has length 176 [2019-10-13 21:17:09,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:09,454 INFO L462 AbstractCegarLoop]: Abstraction has 427 states and 570 transitions. [2019-10-13 21:17:09,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:17:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 570 transitions. [2019-10-13 21:17:09,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 21:17:09,459 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:09,459 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:09,459 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:09,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:09,460 INFO L82 PathProgramCache]: Analyzing trace with hash -819004996, now seen corresponding path program 1 times [2019-10-13 21:17:09,460 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:09,460 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279577127] [2019-10-13 21:17:09,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:09,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:09,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:17:09,740 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279577127] [2019-10-13 21:17:09,741 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:09,741 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:09,741 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722576448] [2019-10-13 21:17:09,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:09,750 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:09,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:09,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:09,751 INFO L87 Difference]: Start difference. First operand 427 states and 570 transitions. Second operand 3 states. [2019-10-13 21:17:09,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:09,836 INFO L93 Difference]: Finished difference Result 625 states and 820 transitions. [2019-10-13 21:17:09,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:09,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-10-13 21:17:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:09,846 INFO L225 Difference]: With dead ends: 625 [2019-10-13 21:17:09,846 INFO L226 Difference]: Without dead ends: 430 [2019-10-13 21:17:09,852 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 21:17:09,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2019-10-13 21:17:09,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 429. [2019-10-13 21:17:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-10-13 21:17:09,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 572 transitions. [2019-10-13 21:17:09,906 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 572 transitions. Word has length 177 [2019-10-13 21:17:09,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:09,907 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 572 transitions. [2019-10-13 21:17:09,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:09,907 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 572 transitions. [2019-10-13 21:17:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 21:17:09,910 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:09,910 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:09,911 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:09,911 INFO L82 PathProgramCache]: Analyzing trace with hash 2130216492, now seen corresponding path program 1 times [2019-10-13 21:17:09,911 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:09,912 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419678472] [2019-10-13 21:17:09,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:09,912 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:09,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:17:10,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419678472] [2019-10-13 21:17:10,105 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:10,105 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:10,105 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363564670] [2019-10-13 21:17:10,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:10,106 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:10,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:10,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:10,107 INFO L87 Difference]: Start difference. First operand 429 states and 572 transitions. Second operand 3 states. [2019-10-13 21:17:10,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:10,141 INFO L93 Difference]: Finished difference Result 834 states and 1142 transitions. [2019-10-13 21:17:10,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:10,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-10-13 21:17:10,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:10,151 INFO L225 Difference]: With dead ends: 834 [2019-10-13 21:17:10,152 INFO L226 Difference]: Without dead ends: 470 [2019-10-13 21:17:10,154 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 21:17:10,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-10-13 21:17:10,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 469. [2019-10-13 21:17:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2019-10-13 21:17:10,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 641 transitions. [2019-10-13 21:17:10,179 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 641 transitions. Word has length 187 [2019-10-13 21:17:10,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:10,180 INFO L462 AbstractCegarLoop]: Abstraction has 469 states and 641 transitions. [2019-10-13 21:17:10,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:10,180 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 641 transitions. [2019-10-13 21:17:10,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-13 21:17:10,184 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:10,185 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:10,185 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:10,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:10,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1179138555, now seen corresponding path program 1 times [2019-10-13 21:17:10,186 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:10,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102759476] [2019-10-13 21:17:10,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:10,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:10,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:10,335 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:17:10,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102759476] [2019-10-13 21:17:10,336 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:10,336 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:10,336 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524697191] [2019-10-13 21:17:10,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:10,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:10,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:10,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:10,338 INFO L87 Difference]: Start difference. First operand 469 states and 641 transitions. Second operand 3 states. [2019-10-13 21:17:10,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:10,372 INFO L93 Difference]: Finished difference Result 951 states and 1344 transitions. [2019-10-13 21:17:10,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:10,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2019-10-13 21:17:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:10,377 INFO L225 Difference]: With dead ends: 951 [2019-10-13 21:17:10,378 INFO L226 Difference]: Without dead ends: 547 [2019-10-13 21:17:10,380 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 21:17:10,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-10-13 21:17:10,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 546. [2019-10-13 21:17:10,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-10-13 21:17:10,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 773 transitions. [2019-10-13 21:17:10,407 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 773 transitions. Word has length 188 [2019-10-13 21:17:10,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:10,408 INFO L462 AbstractCegarLoop]: Abstraction has 546 states and 773 transitions. [2019-10-13 21:17:10,408 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:10,408 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 773 transitions. [2019-10-13 21:17:10,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 21:17:10,414 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:10,414 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:10,415 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:10,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:10,416 INFO L82 PathProgramCache]: Analyzing trace with hash -2052303444, now seen corresponding path program 1 times [2019-10-13 21:17:10,416 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:10,417 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806893946] [2019-10-13 21:17:10,417 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:10,417 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:10,417 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:10,644 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:17:10,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806893946] [2019-10-13 21:17:10,644 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:10,645 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:10,645 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541036635] [2019-10-13 21:17:10,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:10,646 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:10,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:10,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:10,646 INFO L87 Difference]: Start difference. First operand 546 states and 773 transitions. Second operand 3 states. [2019-10-13 21:17:10,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:10,681 INFO L93 Difference]: Finished difference Result 1176 states and 1730 transitions. [2019-10-13 21:17:10,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:10,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2019-10-13 21:17:10,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:10,687 INFO L225 Difference]: With dead ends: 1176 [2019-10-13 21:17:10,688 INFO L226 Difference]: Without dead ends: 695 [2019-10-13 21:17:10,690 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 21:17:10,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2019-10-13 21:17:10,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 694. [2019-10-13 21:17:10,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-10-13 21:17:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1025 transitions. [2019-10-13 21:17:10,722 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1025 transitions. Word has length 189 [2019-10-13 21:17:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:10,722 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 1025 transitions. [2019-10-13 21:17:10,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1025 transitions. [2019-10-13 21:17:10,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 21:17:10,727 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:10,728 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:10,728 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:10,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:10,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1144858235, now seen corresponding path program 1 times [2019-10-13 21:17:10,729 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:10,729 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978461462] [2019-10-13 21:17:10,729 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:10,729 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:10,729 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:17:10,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978461462] [2019-10-13 21:17:10,874 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:10,874 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:10,874 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930510146] [2019-10-13 21:17:10,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:10,875 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:10,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:10,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:10,876 INFO L87 Difference]: Start difference. First operand 694 states and 1025 transitions. Second operand 3 states. [2019-10-13 21:17:10,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:10,936 INFO L93 Difference]: Finished difference Result 1608 states and 2466 transitions. [2019-10-13 21:17:10,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:10,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-10-13 21:17:10,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:10,947 INFO L225 Difference]: With dead ends: 1608 [2019-10-13 21:17:10,948 INFO L226 Difference]: Without dead ends: 979 [2019-10-13 21:17:10,950 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 21:17:10,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2019-10-13 21:17:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 978. [2019-10-13 21:17:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2019-10-13 21:17:11,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1505 transitions. [2019-10-13 21:17:11,010 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1505 transitions. Word has length 190 [2019-10-13 21:17:11,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:11,012 INFO L462 AbstractCegarLoop]: Abstraction has 978 states and 1505 transitions. [2019-10-13 21:17:11,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:11,012 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1505 transitions. [2019-10-13 21:17:11,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-13 21:17:11,021 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:11,021 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:11,022 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:11,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:11,023 INFO L82 PathProgramCache]: Analyzing trace with hash -862158447, now seen corresponding path program 1 times [2019-10-13 21:17:11,023 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:11,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063547843] [2019-10-13 21:17:11,023 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:11,024 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:11,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:11,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:17:11,404 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063547843] [2019-10-13 21:17:11,404 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:11,405 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:17:11,405 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663898385] [2019-10-13 21:17:11,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:17:11,406 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:11,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:17:11,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:17:11,410 INFO L87 Difference]: Start difference. First operand 978 states and 1505 transitions. Second operand 11 states. [2019-10-13 21:17:15,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:15,147 INFO L93 Difference]: Finished difference Result 2434 states and 3435 transitions. [2019-10-13 21:17:15,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-10-13 21:17:15,148 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 193 [2019-10-13 21:17:15,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:15,161 INFO L225 Difference]: With dead ends: 2434 [2019-10-13 21:17:15,161 INFO L226 Difference]: Without dead ends: 2059 [2019-10-13 21:17:15,164 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:17:15,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2019-10-13 21:17:15,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 2044. [2019-10-13 21:17:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2044 states. [2019-10-13 21:17:15,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2886 transitions. [2019-10-13 21:17:15,260 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2886 transitions. Word has length 193 [2019-10-13 21:17:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:15,261 INFO L462 AbstractCegarLoop]: Abstraction has 2044 states and 2886 transitions. [2019-10-13 21:17:15,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:17:15,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2886 transitions. [2019-10-13 21:17:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-13 21:17:15,267 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:15,268 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:15,268 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:15,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1182728700, now seen corresponding path program 1 times [2019-10-13 21:17:15,269 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:15,269 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440424935] [2019-10-13 21:17:15,269 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:15,269 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:15,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:17:15,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440424935] [2019-10-13 21:17:15,568 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:15,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 21:17:15,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496007453] [2019-10-13 21:17:15,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:17:15,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:15,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:17:15,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:17:15,569 INFO L87 Difference]: Start difference. First operand 2044 states and 2886 transitions. Second operand 16 states. [2019-10-13 21:17:15,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:15,916 INFO L93 Difference]: Finished difference Result 3086 states and 4232 transitions. [2019-10-13 21:17:15,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:17:15,917 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 194 [2019-10-13 21:17:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:15,928 INFO L225 Difference]: With dead ends: 3086 [2019-10-13 21:17:15,928 INFO L226 Difference]: Without dead ends: 1774 [2019-10-13 21:17:15,933 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:17:15,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2019-10-13 21:17:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1695. [2019-10-13 21:17:16,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1695 states. [2019-10-13 21:17:16,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2422 transitions. [2019-10-13 21:17:16,023 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2422 transitions. Word has length 194 [2019-10-13 21:17:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:16,023 INFO L462 AbstractCegarLoop]: Abstraction has 1695 states and 2422 transitions. [2019-10-13 21:17:16,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:17:16,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2422 transitions. [2019-10-13 21:17:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:17:16,033 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:16,033 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:16,034 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:16,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:16,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2089057104, now seen corresponding path program 1 times [2019-10-13 21:17:16,035 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:16,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018304344] [2019-10-13 21:17:16,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:16,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:16,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:17:16,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018304344] [2019-10-13 21:17:16,211 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:16,212 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:17:16,213 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694099580] [2019-10-13 21:17:16,214 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:17:16,214 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:16,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:17:16,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:17:16,214 INFO L87 Difference]: Start difference. First operand 1695 states and 2422 transitions. Second operand 6 states. [2019-10-13 21:17:16,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:16,798 INFO L93 Difference]: Finished difference Result 4252 states and 6012 transitions. [2019-10-13 21:17:16,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:17:16,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2019-10-13 21:17:16,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:16,819 INFO L225 Difference]: With dead ends: 4252 [2019-10-13 21:17:16,819 INFO L226 Difference]: Without dead ends: 3381 [2019-10-13 21:17:16,867 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 21:17:16,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2019-10-13 21:17:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3310. [2019-10-13 21:17:16,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3310 states. [2019-10-13 21:17:17,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 4816 transitions. [2019-10-13 21:17:17,009 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 4816 transitions. Word has length 203 [2019-10-13 21:17:17,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:17,010 INFO L462 AbstractCegarLoop]: Abstraction has 3310 states and 4816 transitions. [2019-10-13 21:17:17,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:17:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 4816 transitions. [2019-10-13 21:17:17,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:17:17,020 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:17,021 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:17,021 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:17,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:17,021 INFO L82 PathProgramCache]: Analyzing trace with hash -80625117, now seen corresponding path program 1 times [2019-10-13 21:17:17,022 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:17,022 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989350811] [2019-10-13 21:17:17,022 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:17,022 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:17,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:17,184 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:17:17,184 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989350811] [2019-10-13 21:17:17,185 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:17,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:17:17,186 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221861365] [2019-10-13 21:17:17,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:17:17,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:17,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:17:17,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:17:17,188 INFO L87 Difference]: Start difference. First operand 3310 states and 4816 transitions. Second operand 5 states. [2019-10-13 21:17:18,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:18,223 INFO L93 Difference]: Finished difference Result 10095 states and 14251 transitions. [2019-10-13 21:17:18,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:17:18,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2019-10-13 21:17:18,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:18,274 INFO L225 Difference]: With dead ends: 10095 [2019-10-13 21:17:18,275 INFO L226 Difference]: Without dead ends: 8364 [2019-10-13 21:17:18,284 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:17:18,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8364 states. [2019-10-13 21:17:18,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8364 to 8228. [2019-10-13 21:17:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8228 states. [2019-10-13 21:17:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8228 states to 8228 states and 11880 transitions. [2019-10-13 21:17:18,775 INFO L78 Accepts]: Start accepts. Automaton has 8228 states and 11880 transitions. Word has length 204 [2019-10-13 21:17:18,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:18,776 INFO L462 AbstractCegarLoop]: Abstraction has 8228 states and 11880 transitions. [2019-10-13 21:17:18,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:17:18,776 INFO L276 IsEmpty]: Start isEmpty. Operand 8228 states and 11880 transitions. [2019-10-13 21:17:18,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:17:18,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:18,807 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:18,808 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:18,808 INFO L82 PathProgramCache]: Analyzing trace with hash -667401236, now seen corresponding path program 1 times [2019-10-13 21:17:18,809 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:18,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829655237] [2019-10-13 21:17:18,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:18,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:18,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:17:18,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829655237] [2019-10-13 21:17:18,990 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:18,991 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:17:18,991 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567956247] [2019-10-13 21:17:18,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:17:18,991 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:18,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:17:18,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:17:18,992 INFO L87 Difference]: Start difference. First operand 8228 states and 11880 transitions. Second operand 9 states. [2019-10-13 21:17:19,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:19,553 INFO L93 Difference]: Finished difference Result 12193 states and 16859 transitions. [2019-10-13 21:17:19,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:17:19,554 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 204 [2019-10-13 21:17:19,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:19,610 INFO L225 Difference]: With dead ends: 12193 [2019-10-13 21:17:19,611 INFO L226 Difference]: Without dead ends: 7324 [2019-10-13 21:17:19,633 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:17:19,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7324 states. [2019-10-13 21:17:20,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7324 to 7143. [2019-10-13 21:17:20,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7143 states. [2019-10-13 21:17:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7143 states to 7143 states and 10470 transitions. [2019-10-13 21:17:20,150 INFO L78 Accepts]: Start accepts. Automaton has 7143 states and 10470 transitions. Word has length 204 [2019-10-13 21:17:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:20,151 INFO L462 AbstractCegarLoop]: Abstraction has 7143 states and 10470 transitions. [2019-10-13 21:17:20,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:17:20,152 INFO L276 IsEmpty]: Start isEmpty. Operand 7143 states and 10470 transitions. [2019-10-13 21:17:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-10-13 21:17:20,175 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:20,175 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:17:20,176 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:20,176 INFO L82 PathProgramCache]: Analyzing trace with hash -341043388, now seen corresponding path program 1 times [2019-10-13 21:17:20,176 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:20,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450533944] [2019-10-13 21:17:20,177 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:20,177 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:20,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:17:20,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450533944] [2019-10-13 21:17:20,391 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:20,391 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:17:20,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195489436] [2019-10-13 21:17:20,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:17:20,392 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:20,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:17:20,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:17:20,392 INFO L87 Difference]: Start difference. First operand 7143 states and 10470 transitions. Second operand 8 states. [2019-10-13 21:17:24,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:24,780 INFO L93 Difference]: Finished difference Result 21795 states and 34408 transitions. [2019-10-13 21:17:24,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:17:24,781 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2019-10-13 21:17:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:24,882 INFO L225 Difference]: With dead ends: 21795 [2019-10-13 21:17:24,882 INFO L226 Difference]: Without dead ends: 14717 [2019-10-13 21:17:24,914 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:17:24,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14717 states. [2019-10-13 21:17:25,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14717 to 10431. [2019-10-13 21:17:25,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10431 states. [2019-10-13 21:17:25,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 17390 transitions. [2019-10-13 21:17:25,654 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 17390 transitions. Word has length 241 [2019-10-13 21:17:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:25,655 INFO L462 AbstractCegarLoop]: Abstraction has 10431 states and 17390 transitions. [2019-10-13 21:17:25,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:17:25,655 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 17390 transitions. [2019-10-13 21:17:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-10-13 21:17:25,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:25,714 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:17:25,714 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:25,715 INFO L82 PathProgramCache]: Analyzing trace with hash 263671686, now seen corresponding path program 1 times [2019-10-13 21:17:25,715 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:25,715 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451483004] [2019-10-13 21:17:25,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:25,715 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:25,716 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:17:25,919 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451483004] [2019-10-13 21:17:25,919 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:25,919 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:17:25,920 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280318670] [2019-10-13 21:17:25,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:17:25,920 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:25,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:17:25,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:17:25,921 INFO L87 Difference]: Start difference. First operand 10431 states and 17390 transitions. Second operand 8 states. [2019-10-13 21:17:30,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:30,154 INFO L93 Difference]: Finished difference Result 32195 states and 58424 transitions. [2019-10-13 21:17:30,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:17:30,155 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 242 [2019-10-13 21:17:30,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:30,302 INFO L225 Difference]: With dead ends: 32195 [2019-10-13 21:17:30,302 INFO L226 Difference]: Without dead ends: 21829 [2019-10-13 21:17:30,380 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:17:30,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21829 states. [2019-10-13 21:17:31,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21829 to 17127. [2019-10-13 21:17:31,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17127 states. [2019-10-13 21:17:31,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17127 states to 17127 states and 32574 transitions. [2019-10-13 21:17:31,677 INFO L78 Accepts]: Start accepts. Automaton has 17127 states and 32574 transitions. Word has length 242 [2019-10-13 21:17:31,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:31,678 INFO L462 AbstractCegarLoop]: Abstraction has 17127 states and 32574 transitions. [2019-10-13 21:17:31,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:17:31,678 INFO L276 IsEmpty]: Start isEmpty. Operand 17127 states and 32574 transitions. [2019-10-13 21:17:31,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2019-10-13 21:17:31,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:31,816 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:17:31,817 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:31,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:31,817 INFO L82 PathProgramCache]: Analyzing trace with hash -66134136, now seen corresponding path program 1 times [2019-10-13 21:17:31,818 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:31,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409881535] [2019-10-13 21:17:31,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:31,818 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:31,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:17:32,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409881535] [2019-10-13 21:17:32,019 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:32,019 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:17:32,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065946431] [2019-10-13 21:17:32,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:17:32,020 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:32,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:17:32,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:17:32,020 INFO L87 Difference]: Start difference. First operand 17127 states and 32574 transitions. Second operand 8 states.