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_spec27_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:17,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:17,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:17,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:17,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:17,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:17,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:17,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:17,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:17,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:17,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:17,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:17,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:17,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:17,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:17,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:17,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:17,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:17,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:17,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:17,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:17,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:17,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:17,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:17,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:17,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:17,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:17,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:17,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:17,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:17,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:17,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:17,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:17,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:17,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:17,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:17,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:17,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:17,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:17,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:17,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:17,380 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 21:15:17,399 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:17,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:17,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:17,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:17,402 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:17,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:17,402 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:17,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:17,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:17,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:17,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:17,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:17,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:17,404 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:17,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:17,404 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:17,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:17,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:17,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:17,405 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:17,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:17,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:17,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:17,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:17,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:17,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:17,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:17,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:17,408 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 21:15:17,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:17,724 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:17,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:17,730 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:17,730 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:17,731 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product35.cil.c [2019-10-13 21:15:17,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d2eea79/86c3fd6e993949de8fb278cdcbff951e/FLAG4bee2244d [2019-10-13 21:15:18,457 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:18,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product35.cil.c [2019-10-13 21:15:18,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d2eea79/86c3fd6e993949de8fb278cdcbff951e/FLAG4bee2244d [2019-10-13 21:15:18,660 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2d2eea79/86c3fd6e993949de8fb278cdcbff951e [2019-10-13 21:15:18,671 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:18,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:18,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:18,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:18,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:18,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:18" (1/1) ... [2019-10-13 21:15:18,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1172d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:18, skipping insertion in model container [2019-10-13 21:15:18,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:18" (1/1) ... [2019-10-13 21:15:18,689 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:18,773 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:19,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:19,673 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:19,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:19,972 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:19,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19 WrapperNode [2019-10-13 21:15:19,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:19,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:19,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:19,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:19,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:19,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:20,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:20,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:20,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:20,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:20,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:20,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:20,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:20,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:20,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:20,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (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 21:15:20,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:20,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:20,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:20,309 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:20,309 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:20,310 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:15:20,310 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:20,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:20,312 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:20,312 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:20,312 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:20,312 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:20,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:20,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:20,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:20,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:20,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:20,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:20,317 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:20,318 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:20,319 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:20,320 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:20,320 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:20,321 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:20,321 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:20,321 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:20,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:20,322 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:20,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:20,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:20,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:20,323 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:20,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:20,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:20,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:20,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:20,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:20,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:20,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:20,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:20,324 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:20,324 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:20,324 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:20,324 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:20,326 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:20,326 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:20,326 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:20,326 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:20,328 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:20,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:20,328 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:20,328 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:20,328 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:20,328 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:20,328 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:20,329 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:20,329 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:20,330 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:20,330 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:20,330 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:20,330 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:20,331 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:20,331 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:20,332 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:15:20,332 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:20,332 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:20,332 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:20,334 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:20,335 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:20,335 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:20,335 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:20,335 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:20,335 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:15:20,335 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:15:20,336 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:20,336 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:15:20,336 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:20,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:20,336 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:20,336 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:20,337 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:20,337 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:20,337 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:20,337 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:20,337 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:20,337 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:20,338 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:20,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:20,338 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:20,338 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:20,338 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:20,338 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:20,338 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:20,339 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:20,339 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:20,339 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:20,339 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:20,340 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:15:20,340 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:15:20,340 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:15:20,340 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:20,341 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:20,343 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:20,344 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:20,350 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:20,350 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:20,351 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:20,352 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:15:20,352 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:20,353 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:20,356 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:20,357 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:20,358 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:20,360 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:20,361 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:20,362 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:20,363 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:20,363 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:20,363 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:20,363 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:20,363 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:20,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:20,365 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:20,366 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:20,367 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:20,368 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:20,369 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:20,370 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:15:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:15:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:15:20,371 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:20,372 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:15:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:20,373 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:20,374 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:20,375 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:15:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:15:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:15:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:20,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:20,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:22,732 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:22,733 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:22,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:22 BoogieIcfgContainer [2019-10-13 21:15:22,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:22,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:22,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:22,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:22,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:18" (1/3) ... [2019-10-13 21:15:22,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e9207b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:22, skipping insertion in model container [2019-10-13 21:15:22,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (2/3) ... [2019-10-13 21:15:22,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18e9207b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:22, skipping insertion in model container [2019-10-13 21:15:22,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:22" (3/3) ... [2019-10-13 21:15:22,751 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product35.cil.c [2019-10-13 21:15:22,762 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:22,775 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:22,791 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:22,836 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:22,836 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:22,836 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:22,836 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:22,837 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:22,837 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:22,837 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:22,837 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:22,885 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states. [2019-10-13 21:15:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-13 21:15:22,923 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,925 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:22,928 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,934 INFO L82 PathProgramCache]: Analyzing trace with hash 6494718, now seen corresponding path program 1 times [2019-10-13 21:15:22,945 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,945 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731479479] [2019-10-13 21:15:22,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,645 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:23,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731479479] [2019-10-13 21:15:23,647 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:23,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:23,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683013323] [2019-10-13 21:15:23,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:23,654 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:23,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:23,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:23,670 INFO L87 Difference]: Start difference. First operand 685 states. Second operand 2 states. [2019-10-13 21:15:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:23,751 INFO L93 Difference]: Finished difference Result 1045 states and 1413 transitions. [2019-10-13 21:15:23,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:23,753 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 222 [2019-10-13 21:15:23,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:23,778 INFO L225 Difference]: With dead ends: 1045 [2019-10-13 21:15:23,779 INFO L226 Difference]: Without dead ends: 656 [2019-10-13 21:15:23,787 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 21:15:23,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2019-10-13 21:15:23,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2019-10-13 21:15:23,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 656 states. [2019-10-13 21:15:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 889 transitions. [2019-10-13 21:15:23,893 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 889 transitions. Word has length 222 [2019-10-13 21:15:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:23,896 INFO L462 AbstractCegarLoop]: Abstraction has 656 states and 889 transitions. [2019-10-13 21:15:23,896 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 889 transitions. [2019-10-13 21:15:23,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2019-10-13 21:15:23,904 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:23,904 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:23,904 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:23,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:23,905 INFO L82 PathProgramCache]: Analyzing trace with hash -599466214, now seen corresponding path program 1 times [2019-10-13 21:15:23,905 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:23,905 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5368829] [2019-10-13 21:15:23,906 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,906 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:24,264 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:24,264 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5368829] [2019-10-13 21:15:24,265 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:24,265 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:24,265 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505100993] [2019-10-13 21:15:24,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:24,268 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:24,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:24,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:24,269 INFO L87 Difference]: Start difference. First operand 656 states and 889 transitions. Second operand 3 states. [2019-10-13 21:15:24,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:24,336 INFO L93 Difference]: Finished difference Result 1028 states and 1372 transitions. [2019-10-13 21:15:24,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:24,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2019-10-13 21:15:24,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:24,349 INFO L225 Difference]: With dead ends: 1028 [2019-10-13 21:15:24,349 INFO L226 Difference]: Without dead ends: 659 [2019-10-13 21:15:24,353 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 21:15:24,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-13 21:15:24,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 658. [2019-10-13 21:15:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2019-10-13 21:15:24,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 891 transitions. [2019-10-13 21:15:24,418 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 891 transitions. Word has length 223 [2019-10-13 21:15:24,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:24,419 INFO L462 AbstractCegarLoop]: Abstraction has 658 states and 891 transitions. [2019-10-13 21:15:24,419 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:24,419 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 891 transitions. [2019-10-13 21:15:24,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-13 21:15:24,428 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:24,429 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:24,429 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:24,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1876117259, now seen corresponding path program 1 times [2019-10-13 21:15:24,430 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:24,430 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141823483] [2019-10-13 21:15:24,430 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:24,431 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:24,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:24,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141823483] [2019-10-13 21:15:24,772 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:24,772 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:24,773 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87668301] [2019-10-13 21:15:24,774 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:24,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:24,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:24,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:24,778 INFO L87 Difference]: Start difference. First operand 658 states and 891 transitions. Second operand 3 states. [2019-10-13 21:15:24,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:24,852 INFO L93 Difference]: Finished difference Result 1296 states and 1786 transitions. [2019-10-13 21:15:24,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:24,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2019-10-13 21:15:24,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:24,862 INFO L225 Difference]: With dead ends: 1296 [2019-10-13 21:15:24,862 INFO L226 Difference]: Without dead ends: 703 [2019-10-13 21:15:24,868 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 21:15:24,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2019-10-13 21:15:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 702. [2019-10-13 21:15:24,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2019-10-13 21:15:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 966 transitions. [2019-10-13 21:15:24,904 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 966 transitions. Word has length 235 [2019-10-13 21:15:24,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:24,904 INFO L462 AbstractCegarLoop]: Abstraction has 702 states and 966 transitions. [2019-10-13 21:15:24,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:24,905 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 966 transitions. [2019-10-13 21:15:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 21:15:24,912 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:24,913 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:24,914 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:24,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:24,914 INFO L82 PathProgramCache]: Analyzing trace with hash 55549419, now seen corresponding path program 1 times [2019-10-13 21:15:24,914 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:24,915 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112177682] [2019-10-13 21:15:24,915 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:24,915 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:24,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:25,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112177682] [2019-10-13 21:15:25,113 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:25,114 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:25,114 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383678755] [2019-10-13 21:15:25,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:25,115 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:25,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:25,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:25,116 INFO L87 Difference]: Start difference. First operand 702 states and 966 transitions. Second operand 3 states. [2019-10-13 21:15:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:25,157 INFO L93 Difference]: Finished difference Result 1425 states and 2006 transitions. [2019-10-13 21:15:25,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:25,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2019-10-13 21:15:25,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:25,165 INFO L225 Difference]: With dead ends: 1425 [2019-10-13 21:15:25,165 INFO L226 Difference]: Without dead ends: 788 [2019-10-13 21:15:25,168 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 21:15:25,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2019-10-13 21:15:25,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 787. [2019-10-13 21:15:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2019-10-13 21:15:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1110 transitions. [2019-10-13 21:15:25,199 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1110 transitions. Word has length 236 [2019-10-13 21:15:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:25,200 INFO L462 AbstractCegarLoop]: Abstraction has 787 states and 1110 transitions. [2019-10-13 21:15:25,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1110 transitions. [2019-10-13 21:15:25,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-13 21:15:25,206 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:25,206 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:25,207 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:25,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:25,207 INFO L82 PathProgramCache]: Analyzing trace with hash 339589291, now seen corresponding path program 1 times [2019-10-13 21:15:25,207 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:25,208 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762369892] [2019-10-13 21:15:25,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:25,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:25,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:25,518 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762369892] [2019-10-13 21:15:25,519 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:25,519 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:25,519 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27174016] [2019-10-13 21:15:25,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:25,520 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:25,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:25,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:25,522 INFO L87 Difference]: Start difference. First operand 787 states and 1110 transitions. Second operand 3 states. [2019-10-13 21:15:25,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:25,571 INFO L93 Difference]: Finished difference Result 1674 states and 2428 transitions. [2019-10-13 21:15:25,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:25,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2019-10-13 21:15:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:25,580 INFO L225 Difference]: With dead ends: 1674 [2019-10-13 21:15:25,580 INFO L226 Difference]: Without dead ends: 952 [2019-10-13 21:15:25,583 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 21:15:25,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2019-10-13 21:15:25,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 951. [2019-10-13 21:15:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2019-10-13 21:15:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1386 transitions. [2019-10-13 21:15:25,636 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1386 transitions. Word has length 237 [2019-10-13 21:15:25,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:25,637 INFO L462 AbstractCegarLoop]: Abstraction has 951 states and 1386 transitions. [2019-10-13 21:15:25,637 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:25,637 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1386 transitions. [2019-10-13 21:15:25,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-10-13 21:15:25,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:25,643 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:25,644 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:25,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:25,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2008576442, now seen corresponding path program 1 times [2019-10-13 21:15:25,644 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:25,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299381943] [2019-10-13 21:15:25,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:25,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:25,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:26,140 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:26,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299381943] [2019-10-13 21:15:26,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794671453] [2019-10-13 21:15:26,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:26,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 3286 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:26,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:27,302 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:27,722 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:27,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:27,939 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:28,099 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:28,100 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:28,100 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:15:28,100 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986657623] [2019-10-13 21:15:28,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:28,101 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:28,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:28,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:28,104 INFO L87 Difference]: Start difference. First operand 951 states and 1386 transitions. Second operand 9 states. [2019-10-13 21:15:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:30,218 INFO L93 Difference]: Finished difference Result 1880 states and 2752 transitions. [2019-10-13 21:15:30,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:30,222 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2019-10-13 21:15:30,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:30,229 INFO L225 Difference]: With dead ends: 1880 [2019-10-13 21:15:30,229 INFO L226 Difference]: Without dead ends: 965 [2019-10-13 21:15:30,233 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 467 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:15:30,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2019-10-13 21:15:30,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 965. [2019-10-13 21:15:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2019-10-13 21:15:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1404 transitions. [2019-10-13 21:15:30,303 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1404 transitions. Word has length 239 [2019-10-13 21:15:30,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:30,305 INFO L462 AbstractCegarLoop]: Abstraction has 965 states and 1404 transitions. [2019-10-13 21:15:30,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:30,305 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1404 transitions. [2019-10-13 21:15:30,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-10-13 21:15:30,312 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:30,312 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:30,521 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:30,522 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:30,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:30,522 INFO L82 PathProgramCache]: Analyzing trace with hash 525978830, now seen corresponding path program 1 times [2019-10-13 21:15:30,523 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:30,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098924532] [2019-10-13 21:15:30,523 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:30,523 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:30,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:31,083 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098924532] [2019-10-13 21:15:31,083 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287347270] [2019-10-13 21:15:31,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:31,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 3287 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:31,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:32,051 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:32,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:32,407 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:32,507 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:32,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:15:32,508 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736505566] [2019-10-13 21:15:32,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:32,509 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:32,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:32,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:32,510 INFO L87 Difference]: Start difference. First operand 965 states and 1404 transitions. Second operand 7 states. [2019-10-13 21:15:33,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:33,886 INFO L93 Difference]: Finished difference Result 1881 states and 2758 transitions. [2019-10-13 21:15:33,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:33,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2019-10-13 21:15:33,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:33,894 INFO L225 Difference]: With dead ends: 1881 [2019-10-13 21:15:33,894 INFO L226 Difference]: Without dead ends: 967 [2019-10-13 21:15:33,898 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 474 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:15:33,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2019-10-13 21:15:33,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 967. [2019-10-13 21:15:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2019-10-13 21:15:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1407 transitions. [2019-10-13 21:15:33,943 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1407 transitions. Word has length 240 [2019-10-13 21:15:33,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:33,943 INFO L462 AbstractCegarLoop]: Abstraction has 967 states and 1407 transitions. [2019-10-13 21:15:33,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1407 transitions. [2019-10-13 21:15:33,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-10-13 21:15:33,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:33,951 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:34,159 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:34,160 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:34,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:34,161 INFO L82 PathProgramCache]: Analyzing trace with hash 274750856, now seen corresponding path program 1 times [2019-10-13 21:15:34,161 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:34,161 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083791960] [2019-10-13 21:15:34,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:34,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:34,162 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:34,766 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083791960] [2019-10-13 21:15:34,766 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86662751] [2019-10-13 21:15:34,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:35,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 3288 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:35,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:35,701 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:35,702 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:36,044 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:36,130 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:36,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:36,353 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:36,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:15:36,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626846330] [2019-10-13 21:15:36,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:36,355 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:36,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:36,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:15:36,356 INFO L87 Difference]: Start difference. First operand 967 states and 1407 transitions. Second operand 16 states. [2019-10-13 21:15:38,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:38,672 INFO L93 Difference]: Finished difference Result 1885 states and 2756 transitions. [2019-10-13 21:15:38,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:38,673 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 241 [2019-10-13 21:15:38,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:38,681 INFO L225 Difference]: With dead ends: 1885 [2019-10-13 21:15:38,681 INFO L226 Difference]: Without dead ends: 979 [2019-10-13 21:15:38,684 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 471 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:15:38,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2019-10-13 21:15:38,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 977. [2019-10-13 21:15:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2019-10-13 21:15:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1418 transitions. [2019-10-13 21:15:38,726 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1418 transitions. Word has length 241 [2019-10-13 21:15:38,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:38,726 INFO L462 AbstractCegarLoop]: Abstraction has 977 states and 1418 transitions. [2019-10-13 21:15:38,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:38,727 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1418 transitions. [2019-10-13 21:15:38,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-10-13 21:15:38,733 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:38,733 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:38,941 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:38,946 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:38,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:38,947 INFO L82 PathProgramCache]: Analyzing trace with hash -632261288, now seen corresponding path program 2 times [2019-10-13 21:15:38,947 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:38,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230666461] [2019-10-13 21:15:38,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:38,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:38,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:39,354 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:39,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230666461] [2019-10-13 21:15:39,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533614798] [2019-10-13 21:15:39,355 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:39,893 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:15:39,894 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:39,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 2559 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:15:39,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:15:40,120 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:40,905 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:40,906 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:15:40,912 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375978690] [2019-10-13 21:15:40,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:15:40,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:40,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:15:40,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:15:40,916 INFO L87 Difference]: Start difference. First operand 977 states and 1418 transitions. Second operand 14 states. [2019-10-13 21:15:44,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:44,093 INFO L93 Difference]: Finished difference Result 3219 states and 4712 transitions. [2019-10-13 21:15:44,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:15:44,094 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 242 [2019-10-13 21:15:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:44,112 INFO L225 Difference]: With dead ends: 3219 [2019-10-13 21:15:44,113 INFO L226 Difference]: Without dead ends: 2863 [2019-10-13 21:15:44,116 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 482 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:15:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2019-10-13 21:15:44,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2459. [2019-10-13 21:15:44,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2019-10-13 21:15:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3699 transitions. [2019-10-13 21:15:44,275 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3699 transitions. Word has length 242 [2019-10-13 21:15:44,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:44,276 INFO L462 AbstractCegarLoop]: Abstraction has 2459 states and 3699 transitions. [2019-10-13 21:15:44,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:15:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3699 transitions. [2019-10-13 21:15:44,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2019-10-13 21:15:44,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:44,298 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:44,510 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:44,510 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:44,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:44,512 INFO L82 PathProgramCache]: Analyzing trace with hash -484956370, now seen corresponding path program 1 times [2019-10-13 21:15:44,512 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:44,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309445777] [2019-10-13 21:15:44,512 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:44,512 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:44,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:44,888 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:44,888 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309445777] [2019-10-13 21:15:44,888 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125048124] [2019-10-13 21:15:44,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:45,556 INFO L256 TraceCheckSpWp]: Trace formula consists of 3290 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:45,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:45,729 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:46,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:46,189 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:46,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:46,404 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:46,404 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:15:46,404 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6479033] [2019-10-13 21:15:46,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:15:46,405 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:46,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:15:46,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:46,406 INFO L87 Difference]: Start difference. First operand 2459 states and 3699 transitions. Second operand 15 states. [2019-10-13 21:15:49,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:49,732 INFO L93 Difference]: Finished difference Result 4812 states and 7274 transitions. [2019-10-13 21:15:49,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:49,733 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 243 [2019-10-13 21:15:49,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:49,749 INFO L225 Difference]: With dead ends: 4812 [2019-10-13 21:15:49,749 INFO L226 Difference]: Without dead ends: 2465 [2019-10-13 21:15:49,759 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 475 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2019-10-13 21:15:49,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2459. [2019-10-13 21:15:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2019-10-13 21:15:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3697 transitions. [2019-10-13 21:15:49,872 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3697 transitions. Word has length 243 [2019-10-13 21:15:49,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:49,872 INFO L462 AbstractCegarLoop]: Abstraction has 2459 states and 3697 transitions. [2019-10-13 21:15:49,873 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:15:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3697 transitions. [2019-10-13 21:15:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-13 21:15:49,885 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:49,885 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:50,093 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:50,094 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:50,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:50,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1269171289, now seen corresponding path program 1 times [2019-10-13 21:15:50,094 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:50,095 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080944625] [2019-10-13 21:15:50,095 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:50,095 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:50,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:50,432 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:50,433 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080944625] [2019-10-13 21:15:50,434 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630115503] [2019-10-13 21:15:50,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:51,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:51,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:51,404 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:51,404 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:51,675 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:51,730 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:51,808 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:15:51,808 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:51,808 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:15:51,809 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839396306] [2019-10-13 21:15:51,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:51,810 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:51,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:51,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:51,811 INFO L87 Difference]: Start difference. First operand 2459 states and 3697 transitions. Second operand 12 states.