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_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:17:06,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:17:06,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:17:06,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:17:06,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:17:06,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:17:06,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:17:06,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:17:06,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:17:06,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:17:06,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:17:06,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:17:06,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:17:06,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:17:06,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:17:06,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:17:06,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:17:06,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:17:06,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:17:06,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:17:06,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:17:06,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:17:06,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:17:06,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:17:06,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:17:06,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:17:06,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:17:06,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:17:06,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:17:06,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:17:06,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:17:06,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:17:06,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:17:06,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:17:06,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:17:06,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:17:06,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:17:06,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:17:06,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:17:06,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:17:06,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:17:06,380 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 21:17:06,394 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:17:06,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:17:06,396 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:17:06,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:17:06,397 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:17:06,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:17:06,398 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:17:06,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:17:06,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:17:06,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:17:06,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:17:06,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:17:06,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:17:06,400 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:17:06,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:17:06,401 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:17:06,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:17:06,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:17:06,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:17:06,402 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:17:06,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:17:06,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:17:06,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:17:06,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:17:06,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:17:06,403 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:17:06,403 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:17:06,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:17:06,404 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 21:17:06,694 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:17:06,708 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:17:06,711 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:17:06,713 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:17:06,713 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:17:06,714 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product22.cil.c [2019-10-13 21:17:06,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6053b689/a2d4b4b7a23d485b9eb5aed9056ec49b/FLAGf95cf1143 [2019-10-13 21:17:07,428 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:17:07,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product22.cil.c [2019-10-13 21:17:07,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6053b689/a2d4b4b7a23d485b9eb5aed9056ec49b/FLAGf95cf1143 [2019-10-13 21:17:07,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6053b689/a2d4b4b7a23d485b9eb5aed9056ec49b [2019-10-13 21:17:07,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:17:07,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:17:07,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:17:07,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:17:07,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:17:07,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:07" (1/1) ... [2019-10-13 21:17:07,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7156f2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:07, skipping insertion in model container [2019-10-13 21:17:07,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:07" (1/1) ... [2019-10-13 21:17:07,701 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:17:07,766 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:17:08,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:17:08,565 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:17:08,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:17:08,829 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:17:08,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:08 WrapperNode [2019-10-13 21:17:08,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:17:08,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:17:08,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:17:08,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:17:08,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:08" (1/1) ... [2019-10-13 21:17:08,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:08" (1/1) ... [2019-10-13 21:17:08,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:08" (1/1) ... [2019-10-13 21:17:08,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:08" (1/1) ... [2019-10-13 21:17:08,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:08" (1/1) ... [2019-10-13 21:17:08,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:08" (1/1) ... [2019-10-13 21:17:09,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:08" (1/1) ... [2019-10-13 21:17:09,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:17:09,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:17:09,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:17:09,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:17:09,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:08" (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 21:17:09,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:17:09,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:17:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:17:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:17:09,150 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:17:09,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:17:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:17:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:17:09,152 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:17:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:17:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:17:09,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:17:09,154 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:17:09,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:17:09,155 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:17:09,155 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:17:09,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:17:09,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:17:09,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:17:09,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:17:09,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:17:09,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:17:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:17:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:17:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:17:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:17:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:17:09,161 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:17:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:17:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:17:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:17:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:17:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:17:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:17:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:17:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-13 21:17:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-13 21:17:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:17:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:17:09,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:17:09,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:17:09,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:17:09,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:17:09,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:17:09,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:17:09,165 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:17:09,165 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:17:09,165 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:17:09,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:17:09,165 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:17:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:17:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:17:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:17:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:17:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:17:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:17:09,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:17:09,167 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:17:09,167 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:17:09,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:17:09,167 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:17:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:17:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:17:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:17:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:17:09,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:17:09,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:17:09,169 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:17:09,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:17:09,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:17:09,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:17:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:17:09,170 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:17:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:17:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:17:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:17:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:17:09,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:17:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:17:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:17:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:17:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:17:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:17:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:17:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:17:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:17:09,174 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:17:09,175 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:17:09,175 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:17:09,175 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:17:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:17:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:17:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:17:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:17:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-13 21:17:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:17:09,176 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:17:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:17:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:17:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:17:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:17:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:17:09,177 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:17:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:17:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:17:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:17:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:17:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:17:09,178 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:17:09,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:17:09,179 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:17:09,179 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:17:09,179 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:17:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:17:09,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:17:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:17:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:17:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:17:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:17:09,180 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:17:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:17:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:17:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:17:09,181 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:17:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:17:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:17:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:17:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:17:09,183 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:17:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:17:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:17:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:17:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:17:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:17:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:17:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:17:09,186 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:17:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:17:09,189 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:17:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:17:09,190 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:17:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:17:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:17:09,191 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:17:09,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:17:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:17:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:17:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:17:09,198 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:17:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:17:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:17:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:17:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:17:09,199 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:17:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:17:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:17:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:17:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:17:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:17:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:17:09,200 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:17:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:17:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:17:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-13 21:17:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-13 21:17:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:17:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:17:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:17:09,201 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:17:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:17:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:17:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:17:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:17:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:17:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:17:09,202 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:17:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:17:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:17:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:17:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:17:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:17:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:17:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:17:09,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:17:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:17:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:17:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:17:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:17:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:17:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:17:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:17:09,204 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:17:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:17:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:17:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:17:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:17:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:17:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:17:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:17:09,205 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:17:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:17:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:17:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:17:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:17:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:17:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:17:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:17:09,206 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:17:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:17:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:17:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:17:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:17:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:17:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:17:09,207 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:17:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:17:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:17:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:17:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:17:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:17:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:17:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:17:09,208 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:17:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:17:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:17:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:17:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:17:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:17:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:17:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:17:09,209 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:17:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:17:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-13 21:17:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:17:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:17:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:17:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:17:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:17:09,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:17:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:17:09,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:17:11,432 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:17:11,432 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:17:11,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:11 BoogieIcfgContainer [2019-10-13 21:17:11,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:17:11,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:17:11,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:17:11,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:17:11,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:17:07" (1/3) ... [2019-10-13 21:17:11,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3646b4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:11, skipping insertion in model container [2019-10-13 21:17:11,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:08" (2/3) ... [2019-10-13 21:17:11,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3646b4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:11, skipping insertion in model container [2019-10-13 21:17:11,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:11" (3/3) ... [2019-10-13 21:17:11,446 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product22.cil.c [2019-10-13 21:17:11,457 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:17:11,470 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:17:11,482 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:17:11,515 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:17:11,515 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:17:11,515 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:17:11,515 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:17:11,515 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:17:11,515 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:17:11,516 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:17:11,520 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:17:11,556 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states. [2019-10-13 21:17:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-13 21:17:11,577 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:11,578 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 21:17:11,581 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:11,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:11,587 INFO L82 PathProgramCache]: Analyzing trace with hash 769070679, now seen corresponding path program 1 times [2019-10-13 21:17:11,597 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:11,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464414438] [2019-10-13 21:17:11,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:11,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:11,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:12,302 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 21:17:12,303 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464414438] [2019-10-13 21:17:12,304 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:12,304 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:17:12,304 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127401558] [2019-10-13 21:17:12,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:17:12,312 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:12,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:17:12,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:17:12,331 INFO L87 Difference]: Start difference. First operand 516 states. Second operand 2 states. [2019-10-13 21:17:12,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:12,425 INFO L93 Difference]: Finished difference Result 763 states and 1004 transitions. [2019-10-13 21:17:12,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:17:12,427 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 176 [2019-10-13 21:17:12,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:12,466 INFO L225 Difference]: With dead ends: 763 [2019-10-13 21:17:12,466 INFO L226 Difference]: Without dead ends: 493 [2019-10-13 21:17:12,477 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 21:17:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-10-13 21:17:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2019-10-13 21:17:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2019-10-13 21:17:12,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 653 transitions. [2019-10-13 21:17:12,598 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 653 transitions. Word has length 176 [2019-10-13 21:17:12,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:12,601 INFO L462 AbstractCegarLoop]: Abstraction has 493 states and 653 transitions. [2019-10-13 21:17:12,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:17:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 653 transitions. [2019-10-13 21:17:12,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 21:17:12,607 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:12,607 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 21:17:12,607 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:12,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:12,608 INFO L82 PathProgramCache]: Analyzing trace with hash -688559635, now seen corresponding path program 1 times [2019-10-13 21:17:12,608 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:12,609 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625904975] [2019-10-13 21:17:12,609 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:12,609 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:12,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:12,866 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 21:17:12,866 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625904975] [2019-10-13 21:17:12,867 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:12,867 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:12,867 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588794656] [2019-10-13 21:17:12,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:12,870 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:12,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:12,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:12,871 INFO L87 Difference]: Start difference. First operand 493 states and 653 transitions. Second operand 3 states. [2019-10-13 21:17:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:12,955 INFO L93 Difference]: Finished difference Result 746 states and 972 transitions. [2019-10-13 21:17:12,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:12,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-10-13 21:17:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:12,961 INFO L225 Difference]: With dead ends: 746 [2019-10-13 21:17:12,961 INFO L226 Difference]: Without dead ends: 496 [2019-10-13 21:17:12,964 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 21:17:12,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-10-13 21:17:13,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 495. [2019-10-13 21:17:13,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2019-10-13 21:17:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 655 transitions. [2019-10-13 21:17:13,011 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 655 transitions. Word has length 177 [2019-10-13 21:17:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:13,014 INFO L462 AbstractCegarLoop]: Abstraction has 495 states and 655 transitions. [2019-10-13 21:17:13,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 655 transitions. [2019-10-13 21:17:13,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 21:17:13,021 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:13,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:13,022 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:13,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:13,022 INFO L82 PathProgramCache]: Analyzing trace with hash -786901730, now seen corresponding path program 1 times [2019-10-13 21:17:13,022 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:13,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249547066] [2019-10-13 21:17:13,023 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:13,023 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:13,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:13,329 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 21:17:13,329 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249547066] [2019-10-13 21:17:13,329 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:13,330 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:13,330 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653123344] [2019-10-13 21:17:13,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:13,336 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:13,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:13,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:13,337 INFO L87 Difference]: Start difference. First operand 495 states and 655 transitions. Second operand 3 states. [2019-10-13 21:17:13,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:13,398 INFO L93 Difference]: Finished difference Result 968 states and 1311 transitions. [2019-10-13 21:17:13,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:13,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2019-10-13 21:17:13,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:13,405 INFO L225 Difference]: With dead ends: 968 [2019-10-13 21:17:13,405 INFO L226 Difference]: Without dead ends: 538 [2019-10-13 21:17:13,408 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 21:17:13,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2019-10-13 21:17:13,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 537. [2019-10-13 21:17:13,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2019-10-13 21:17:13,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 727 transitions. [2019-10-13 21:17:13,447 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 727 transitions. Word has length 189 [2019-10-13 21:17:13,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:13,448 INFO L462 AbstractCegarLoop]: Abstraction has 537 states and 727 transitions. [2019-10-13 21:17:13,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 727 transitions. [2019-10-13 21:17:13,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 21:17:13,461 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:13,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:13,462 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:13,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:13,462 INFO L82 PathProgramCache]: Analyzing trace with hash 647973382, now seen corresponding path program 1 times [2019-10-13 21:17:13,465 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:13,465 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497456594] [2019-10-13 21:17:13,465 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:13,466 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:13,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:13,694 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 21:17:13,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497456594] [2019-10-13 21:17:13,695 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:13,695 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:13,695 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786794662] [2019-10-13 21:17:13,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:13,699 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:13,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:13,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:13,700 INFO L87 Difference]: Start difference. First operand 537 states and 727 transitions. Second operand 3 states. [2019-10-13 21:17:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:13,749 INFO L93 Difference]: Finished difference Result 1091 states and 1522 transitions. [2019-10-13 21:17:13,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:13,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-10-13 21:17:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:13,757 INFO L225 Difference]: With dead ends: 1091 [2019-10-13 21:17:13,757 INFO L226 Difference]: Without dead ends: 619 [2019-10-13 21:17:13,759 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 21:17:13,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2019-10-13 21:17:13,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 618. [2019-10-13 21:17:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2019-10-13 21:17:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 865 transitions. [2019-10-13 21:17:13,793 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 865 transitions. Word has length 190 [2019-10-13 21:17:13,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:13,794 INFO L462 AbstractCegarLoop]: Abstraction has 618 states and 865 transitions. [2019-10-13 21:17:13,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:13,794 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 865 transitions. [2019-10-13 21:17:13,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-13 21:17:13,799 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:13,799 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:13,799 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:13,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:13,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1688592318, now seen corresponding path program 1 times [2019-10-13 21:17:13,800 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:13,801 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326718559] [2019-10-13 21:17:13,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:13,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:13,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:14,111 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 21:17:14,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326718559] [2019-10-13 21:17:14,112 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:14,112 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:14,113 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567245773] [2019-10-13 21:17:14,113 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:14,113 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:14,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:14,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:14,115 INFO L87 Difference]: Start difference. First operand 618 states and 865 transitions. Second operand 3 states. [2019-10-13 21:17:14,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:14,161 INFO L93 Difference]: Finished difference Result 1328 states and 1926 transitions. [2019-10-13 21:17:14,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:14,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2019-10-13 21:17:14,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:14,168 INFO L225 Difference]: With dead ends: 1328 [2019-10-13 21:17:14,169 INFO L226 Difference]: Without dead ends: 775 [2019-10-13 21:17:14,171 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 21:17:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2019-10-13 21:17:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 774. [2019-10-13 21:17:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2019-10-13 21:17:14,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1129 transitions. [2019-10-13 21:17:14,210 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1129 transitions. Word has length 191 [2019-10-13 21:17:14,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:14,211 INFO L462 AbstractCegarLoop]: Abstraction has 774 states and 1129 transitions. [2019-10-13 21:17:14,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:14,211 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1129 transitions. [2019-10-13 21:17:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-13 21:17:14,216 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:14,216 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 21:17:14,216 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:14,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:14,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1410664810, now seen corresponding path program 1 times [2019-10-13 21:17:14,217 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:14,217 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093704847] [2019-10-13 21:17:14,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:14,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:14,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:14,531 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 21:17:14,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093704847] [2019-10-13 21:17:14,533 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:14,533 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:17:14,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049578472] [2019-10-13 21:17:14,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:17:14,535 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:14,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:17:14,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:17:14,536 INFO L87 Difference]: Start difference. First operand 774 states and 1129 transitions. Second operand 11 states. [2019-10-13 21:17:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:19,302 INFO L93 Difference]: Finished difference Result 2730 states and 3704 transitions. [2019-10-13 21:17:19,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-10-13 21:17:19,302 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 193 [2019-10-13 21:17:19,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:19,317 INFO L225 Difference]: With dead ends: 2730 [2019-10-13 21:17:19,317 INFO L226 Difference]: Without dead ends: 2185 [2019-10-13 21:17:19,321 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 21:17:19,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2185 states. [2019-10-13 21:17:19,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2185 to 2170. [2019-10-13 21:17:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2170 states. [2019-10-13 21:17:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 2938 transitions. [2019-10-13 21:17:19,426 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 2938 transitions. Word has length 193 [2019-10-13 21:17:19,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:19,427 INFO L462 AbstractCegarLoop]: Abstraction has 2170 states and 2938 transitions. [2019-10-13 21:17:19,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:17:19,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 2938 transitions. [2019-10-13 21:17:19,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-13 21:17:19,433 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:19,433 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 21:17:19,433 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:19,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:19,434 INFO L82 PathProgramCache]: Analyzing trace with hash -2066868888, now seen corresponding path program 1 times [2019-10-13 21:17:19,434 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:19,434 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770428490] [2019-10-13 21:17:19,434 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:19,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:19,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:19,719 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 21:17:19,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770428490] [2019-10-13 21:17:19,720 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:19,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 21:17:19,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490549701] [2019-10-13 21:17:19,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:17:19,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:19,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:17:19,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:17:19,722 INFO L87 Difference]: Start difference. First operand 2170 states and 2938 transitions. Second operand 16 states. [2019-10-13 21:17:20,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:20,134 INFO L93 Difference]: Finished difference Result 3602 states and 4793 transitions. [2019-10-13 21:17:20,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:17:20,134 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 194 [2019-10-13 21:17:20,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:20,147 INFO L225 Difference]: With dead ends: 3602 [2019-10-13 21:17:20,147 INFO L226 Difference]: Without dead ends: 1795 [2019-10-13 21:17:20,154 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:17:20,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2019-10-13 21:17:20,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1748. [2019-10-13 21:17:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1748 states. [2019-10-13 21:17:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2379 transitions. [2019-10-13 21:17:20,239 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2379 transitions. Word has length 194 [2019-10-13 21:17:20,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:20,240 INFO L462 AbstractCegarLoop]: Abstraction has 1748 states and 2379 transitions. [2019-10-13 21:17:20,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:17:20,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2379 transitions. [2019-10-13 21:17:20,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:17:20,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:20,246 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 21:17:20,247 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:20,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:20,247 INFO L82 PathProgramCache]: Analyzing trace with hash 470827017, now seen corresponding path program 1 times [2019-10-13 21:17:20,247 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:20,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360073828] [2019-10-13 21:17:20,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:20,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:20,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:20,501 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 21:17:20,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360073828] [2019-10-13 21:17:20,502 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:20,502 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:17:20,502 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562180110] [2019-10-13 21:17:20,503 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:17:20,503 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:20,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:17:20,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:17:20,504 INFO L87 Difference]: Start difference. First operand 1748 states and 2379 transitions. Second operand 6 states. [2019-10-13 21:17:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:21,165 INFO L93 Difference]: Finished difference Result 4670 states and 6300 transitions. [2019-10-13 21:17:21,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:17:21,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2019-10-13 21:17:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:21,187 INFO L225 Difference]: With dead ends: 4670 [2019-10-13 21:17:21,188 INFO L226 Difference]: Without dead ends: 3487 [2019-10-13 21:17:21,194 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 21:17:21,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2019-10-13 21:17:21,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3416. [2019-10-13 21:17:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3416 states. [2019-10-13 21:17:21,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 4702 transitions. [2019-10-13 21:17:21,356 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 4702 transitions. Word has length 203 [2019-10-13 21:17:21,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:21,357 INFO L462 AbstractCegarLoop]: Abstraction has 3416 states and 4702 transitions. [2019-10-13 21:17:21,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:17:21,357 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 4702 transitions. [2019-10-13 21:17:21,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:17:21,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:21,366 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 21:17:21,366 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:21,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:21,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1952139048, now seen corresponding path program 1 times [2019-10-13 21:17:21,367 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:21,367 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582662856] [2019-10-13 21:17:21,367 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:21,368 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:21,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:21,544 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 21:17:21,544 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582662856] [2019-10-13 21:17:21,544 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:21,544 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:17:21,545 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052804137] [2019-10-13 21:17:21,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:17:21,547 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:21,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:17:21,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:17:21,547 INFO L87 Difference]: Start difference. First operand 3416 states and 4702 transitions. Second operand 9 states. [2019-10-13 21:17:21,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:21,952 INFO L93 Difference]: Finished difference Result 5805 states and 7737 transitions. [2019-10-13 21:17:21,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:17:21,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 204 [2019-10-13 21:17:21,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:21,975 INFO L225 Difference]: With dead ends: 5805 [2019-10-13 21:17:21,975 INFO L226 Difference]: Without dead ends: 3434 [2019-10-13 21:17:21,984 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 21:17:21,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2019-10-13 21:17:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3404. [2019-10-13 21:17:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2019-10-13 21:17:22,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 4676 transitions. [2019-10-13 21:17:22,136 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 4676 transitions. Word has length 204 [2019-10-13 21:17:22,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:22,136 INFO L462 AbstractCegarLoop]: Abstraction has 3404 states and 4676 transitions. [2019-10-13 21:17:22,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:17:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 4676 transitions. [2019-10-13 21:17:22,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:17:22,145 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:22,145 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 21:17:22,145 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:22,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:22,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1365362929, now seen corresponding path program 1 times [2019-10-13 21:17:22,146 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:22,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279079341] [2019-10-13 21:17:22,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:22,147 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:22,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:22,301 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 21:17:22,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279079341] [2019-10-13 21:17:22,301 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:22,302 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:17:22,302 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738195145] [2019-10-13 21:17:22,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:17:22,303 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:22,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:17:22,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:17:22,304 INFO L87 Difference]: Start difference. First operand 3404 states and 4676 transitions. Second operand 5 states. [2019-10-13 21:17:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:23,550 INFO L93 Difference]: Finished difference Result 11031 states and 14823 transitions. [2019-10-13 21:17:23,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:17:23,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2019-10-13 21:17:23,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:23,651 INFO L225 Difference]: With dead ends: 11031 [2019-10-13 21:17:23,651 INFO L226 Difference]: Without dead ends: 7882 [2019-10-13 21:17:23,662 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 21:17:23,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7882 states. [2019-10-13 21:17:24,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7882 to 7616. [2019-10-13 21:17:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7616 states. [2019-10-13 21:17:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7616 states to 7616 states and 10488 transitions. [2019-10-13 21:17:24,031 INFO L78 Accepts]: Start accepts. Automaton has 7616 states and 10488 transitions. Word has length 204 [2019-10-13 21:17:24,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:24,032 INFO L462 AbstractCegarLoop]: Abstraction has 7616 states and 10488 transitions. [2019-10-13 21:17:24,032 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:17:24,032 INFO L276 IsEmpty]: Start isEmpty. Operand 7616 states and 10488 transitions. [2019-10-13 21:17:24,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-13 21:17:24,053 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:24,054 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, 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 21:17:24,054 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:24,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:24,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1182151362, now seen corresponding path program 1 times [2019-10-13 21:17:24,055 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:24,055 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101004178] [2019-10-13 21:17:24,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:24,056 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:24,056 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:24,270 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 21:17:24,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101004178] [2019-10-13 21:17:24,271 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:24,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:17:24,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712983935] [2019-10-13 21:17:24,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:17:24,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:24,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:17:24,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:17:24,273 INFO L87 Difference]: Start difference. First operand 7616 states and 10488 transitions. Second operand 8 states. [2019-10-13 21:17:29,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:29,375 INFO L93 Difference]: Finished difference Result 23214 states and 33454 transitions. [2019-10-13 21:17:29,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:17:29,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2019-10-13 21:17:29,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:29,475 INFO L225 Difference]: With dead ends: 23214 [2019-10-13 21:17:29,475 INFO L226 Difference]: Without dead ends: 15663 [2019-10-13 21:17:29,509 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 21:17:29,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15663 states. [2019-10-13 21:17:30,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15663 to 9868. [2019-10-13 21:17:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9868 states. [2019-10-13 21:17:30,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9868 states to 9868 states and 14984 transitions. [2019-10-13 21:17:30,054 INFO L78 Accepts]: Start accepts. Automaton has 9868 states and 14984 transitions. Word has length 226 [2019-10-13 21:17:30,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:30,057 INFO L462 AbstractCegarLoop]: Abstraction has 9868 states and 14984 transitions. [2019-10-13 21:17:30,058 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:17:30,058 INFO L276 IsEmpty]: Start isEmpty. Operand 9868 states and 14984 transitions. [2019-10-13 21:17:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-10-13 21:17:30,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:30,097 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 21:17:30,097 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:30,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1582698216, now seen corresponding path program 1 times [2019-10-13 21:17:30,098 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:30,098 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251828143] [2019-10-13 21:17:30,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:30,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:30,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:30,370 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 21:17:30,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251828143] [2019-10-13 21:17:30,371 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:30,371 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:17:30,371 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697280313] [2019-10-13 21:17:30,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:17:30,372 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:30,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:17:30,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:17:30,373 INFO L87 Difference]: Start difference. First operand 9868 states and 14984 transitions. Second operand 8 states. [2019-10-13 21:17:35,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:35,340 INFO L93 Difference]: Finished difference Result 30506 states and 49190 transitions. [2019-10-13 21:17:35,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:17:35,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 242 [2019-10-13 21:17:35,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:35,437 INFO L225 Difference]: With dead ends: 30506 [2019-10-13 21:17:35,437 INFO L226 Difference]: Without dead ends: 20703 [2019-10-13 21:17:35,485 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 21:17:35,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20703 states. [2019-10-13 21:17:36,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20703 to 14492. [2019-10-13 21:17:36,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14492 states. [2019-10-13 21:17:36,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14492 states to 14492 states and 24816 transitions. [2019-10-13 21:17:36,503 INFO L78 Accepts]: Start accepts. Automaton has 14492 states and 24816 transitions. Word has length 242 [2019-10-13 21:17:36,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:36,504 INFO L462 AbstractCegarLoop]: Abstraction has 14492 states and 24816 transitions. [2019-10-13 21:17:36,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:17:36,504 INFO L276 IsEmpty]: Start isEmpty. Operand 14492 states and 24816 transitions. [2019-10-13 21:17:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-13 21:17:36,611 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:36,612 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, 1] [2019-10-13 21:17:36,612 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:36,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:36,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1204731446, now seen corresponding path program 1 times [2019-10-13 21:17:36,613 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:36,613 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700198955] [2019-10-13 21:17:36,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:36,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:36,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:36,843 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 21:17:36,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700198955] [2019-10-13 21:17:36,844 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:36,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:36,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715955356] [2019-10-13 21:17:36,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:36,847 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:36,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:36,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:36,850 INFO L87 Difference]: Start difference. First operand 14492 states and 24816 transitions. Second operand 3 states. [2019-10-13 21:17:37,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:37,486 INFO L93 Difference]: Finished difference Result 33723 states and 60331 transitions. [2019-10-13 21:17:37,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:37,488 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2019-10-13 21:17:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:37,579 INFO L225 Difference]: With dead ends: 33723 [2019-10-13 21:17:37,580 INFO L226 Difference]: Without dead ends: 19296 [2019-10-13 21:17:37,661 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 21:17:37,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19296 states.