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_spec11_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:13:48,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:13:48,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:13:48,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:13:48,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:13:48,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:13:48,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:13:48,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:13:48,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:13:48,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:13:48,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:13:48,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:13:48,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:13:48,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:13:48,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:13:48,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:13:48,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:13:48,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:13:48,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:13:48,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:13:48,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:13:48,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:13:48,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:13:48,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:13:48,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:13:48,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:13:48,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:13:48,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:13:48,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:13:48,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:13:48,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:13:48,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:13:48,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:13:48,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:13:48,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:13:48,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:13:48,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:13:48,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:13:48,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:13:48,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:13:48,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:13:48,576 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 21:13:48,593 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:13:48,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:13:48,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:13:48,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:13:48,596 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:13:48,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:13:48,596 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:13:48,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:13:48,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:13:48,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:13:48,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:13:48,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:13:48,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:13:48,598 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:13:48,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:13:48,598 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:13:48,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:13:48,600 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:13:48,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:13:48,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:13:48,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:13:48,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:13:48,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:13:48,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:13:48,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:13:48,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:13:48,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:13:48,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:13:48,602 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 21:13:48,894 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:13:48,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:13:48,920 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:13:48,921 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:13:48,922 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:13:48,922 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product35.cil.c [2019-10-13 21:13:49,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5b34623/fc3e5b33ad2345bb9dae11256dab4986/FLAG33671528d [2019-10-13 21:13:49,661 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:13:49,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product35.cil.c [2019-10-13 21:13:49,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5b34623/fc3e5b33ad2345bb9dae11256dab4986/FLAG33671528d [2019-10-13 21:13:49,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e5b34623/fc3e5b33ad2345bb9dae11256dab4986 [2019-10-13 21:13:49,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:13:49,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:13:49,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:49,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:13:49,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:13:49,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:49" (1/1) ... [2019-10-13 21:13:49,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10977f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:49, skipping insertion in model container [2019-10-13 21:13:49,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:49" (1/1) ... [2019-10-13 21:13:49,883 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:13:49,957 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:13:50,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:50,686 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:13:50,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:50,939 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:13:50,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:50 WrapperNode [2019-10-13 21:13:50,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:50,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:13:50,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:13:50,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:13:50,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:50" (1/1) ... [2019-10-13 21:13:50,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:50" (1/1) ... [2019-10-13 21:13:50,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:50" (1/1) ... [2019-10-13 21:13:50,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:50" (1/1) ... [2019-10-13 21:13:51,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:50" (1/1) ... [2019-10-13 21:13:51,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:50" (1/1) ... [2019-10-13 21:13:51,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:50" (1/1) ... [2019-10-13 21:13:51,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:13:51,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:13:51,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:13:51,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:13:51,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:50" (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 21:13:51,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:13:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:13:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:51,207 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:13:51,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:13:51,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:13:51,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:13:51,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:13:51,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:13:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:13:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:13:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:13:51,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:13:51,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:13:51,210 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:13:51,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:13:51,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:13:51,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:13:51,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:13:51,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:13:51,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:13:51,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:13:51,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:13:51,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:13:51,212 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:13:51,212 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:13:51,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:13:51,212 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:13:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:13:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:13:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:13:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:13:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:13:51,213 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:13:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:13:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:13:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:13:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:13:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:13:51,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:13:51,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:13:51,215 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:13:51,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:13:51,215 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:13:51,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:13:51,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:13:51,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:13:51,216 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:13:51,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:13:51,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:13:51,217 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:13:51,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:13:51,217 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:13:51,217 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-13 21:13:51,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:51,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:51,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:51,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:13:51,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:13:51,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:13:51,219 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:13:51,219 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:13:51,219 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:13:51,220 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:13:51,220 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:13:51,220 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:13:51,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:13:51,220 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:13:51,221 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:13:51,221 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:13:51,221 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:13:51,221 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:13:51,221 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:13:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:13:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:13:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:13:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:13:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:13:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:13:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:13:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:13:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:13:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:13:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:13:51,223 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:13:51,224 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:13:51,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:13:51,224 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:13:51,224 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:13:51,224 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:13:51,224 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:13:51,225 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:13:51,225 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:13:51,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:13:51,225 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:13:51,225 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:13:51,225 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:13:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:13:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:13:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:13:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:13:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:13:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:13:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:13:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:13:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:13:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:13:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:13:51,228 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:13:51,228 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:13:51,228 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:13:51,228 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:13:51,228 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:13:51,228 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:13:51,229 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:13:51,229 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:13:51,229 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:13:51,229 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:13:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:13:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:13:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:13:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:13:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:13:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:13:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:13:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:13:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:13:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:13:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:13:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:13:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:13:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:13:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:13:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:13:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:13:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:13:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:13:51,232 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:13:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:13:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:13:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:13:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:13:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:13:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:13:51,233 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:13:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:13:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:13:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:13:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:13:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:13:51,234 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:13:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:13:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:13:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:13:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:13:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:13:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:13:51,235 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:13:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:13:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:13:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:13:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:13:51,236 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:13:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:13:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:13:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:13:51,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:13:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:13:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:13:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:13:51,238 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:13:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:13:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:13:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-13 21:13:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:13:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:13:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:13:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:13:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:13:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:13:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:13:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:13:51,241 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:13:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:13:51,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:13:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:13:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:13:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:13:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:13:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:13:51,243 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:13:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:13:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:13:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:13:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:13:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:13:51,244 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:13:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:13:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:13:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:13:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:13:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:13:51,245 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:13:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:13:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:13:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:13:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:13:51,246 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:13:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:13:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:13:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:13:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:13:51,247 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:13:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:13:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:13:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:13:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:13:51,248 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:13:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:13:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:13:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:13:51,249 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:13:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:13:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:13:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:13:51,250 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:13:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:13:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:13:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:51,251 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:13:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:13:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:13:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:13:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:13:51,252 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:13:51,253 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:13:51,253 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:13:51,253 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:13:51,253 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:13:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:13:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:13:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:13:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:13:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:13:51,254 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:13:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:13:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:13:51,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:13:53,645 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:13:53,645 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:13:53,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:53 BoogieIcfgContainer [2019-10-13 21:13:53,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:13:53,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:13:53,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:13:53,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:13:53,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:13:49" (1/3) ... [2019-10-13 21:13:53,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6865ad72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:53, skipping insertion in model container [2019-10-13 21:13:53,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:50" (2/3) ... [2019-10-13 21:13:53,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6865ad72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:53, skipping insertion in model container [2019-10-13 21:13:53,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:53" (3/3) ... [2019-10-13 21:13:53,662 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product35.cil.c [2019-10-13 21:13:53,674 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:13:53,688 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:13:53,710 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:13:53,762 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:13:53,762 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:13:53,762 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:13:53,763 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:13:53,763 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:13:53,763 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:13:53,763 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:13:53,763 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:13:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states. [2019-10-13 21:13:53,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-13 21:13:53,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:53,856 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, 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] [2019-10-13 21:13:53,860 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:53,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:53,867 INFO L82 PathProgramCache]: Analyzing trace with hash 425045218, now seen corresponding path program 1 times [2019-10-13 21:13:53,877 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:53,878 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806285303] [2019-10-13 21:13:53,878 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:53,879 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:53,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:54,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806285303] [2019-10-13 21:13:54,720 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:54,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:13:54,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954407152] [2019-10-13 21:13:54,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:13:54,728 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:54,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:13:54,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:13:54,746 INFO L87 Difference]: Start difference. First operand 680 states. Second operand 2 states. [2019-10-13 21:13:54,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:54,877 INFO L93 Difference]: Finished difference Result 1035 states and 1396 transitions. [2019-10-13 21:13:54,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:13:54,879 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 227 [2019-10-13 21:13:54,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:54,920 INFO L225 Difference]: With dead ends: 1035 [2019-10-13 21:13:54,920 INFO L226 Difference]: Without dead ends: 651 [2019-10-13 21:13:54,933 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 21:13:54,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-10-13 21:13:55,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2019-10-13 21:13:55,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2019-10-13 21:13:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 881 transitions. [2019-10-13 21:13:55,072 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 881 transitions. Word has length 227 [2019-10-13 21:13:55,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:55,076 INFO L462 AbstractCegarLoop]: Abstraction has 651 states and 881 transitions. [2019-10-13 21:13:55,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:13:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 881 transitions. [2019-10-13 21:13:55,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-13 21:13:55,086 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:55,086 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, 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] [2019-10-13 21:13:55,087 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:55,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:55,088 INFO L82 PathProgramCache]: Analyzing trace with hash -953379524, now seen corresponding path program 1 times [2019-10-13 21:13:55,088 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:55,088 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545155224] [2019-10-13 21:13:55,088 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:55,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:55,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:55,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545155224] [2019-10-13 21:13:55,527 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:55,527 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:55,527 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783018481] [2019-10-13 21:13:55,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:55,530 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:55,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:55,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:55,531 INFO L87 Difference]: Start difference. First operand 651 states and 881 transitions. Second operand 3 states. [2019-10-13 21:13:55,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:55,588 INFO L93 Difference]: Finished difference Result 1018 states and 1356 transitions. [2019-10-13 21:13:55,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:55,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2019-10-13 21:13:55,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:55,596 INFO L225 Difference]: With dead ends: 1018 [2019-10-13 21:13:55,596 INFO L226 Difference]: Without dead ends: 654 [2019-10-13 21:13:55,600 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 21:13:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2019-10-13 21:13:55,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 653. [2019-10-13 21:13:55,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2019-10-13 21:13:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 883 transitions. [2019-10-13 21:13:55,661 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 883 transitions. Word has length 228 [2019-10-13 21:13:55,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:55,662 INFO L462 AbstractCegarLoop]: Abstraction has 653 states and 883 transitions. [2019-10-13 21:13:55,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:55,663 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 883 transitions. [2019-10-13 21:13:55,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-10-13 21:13:55,673 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:55,673 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, 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] [2019-10-13 21:13:55,673 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:55,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:55,674 INFO L82 PathProgramCache]: Analyzing trace with hash 416765675, now seen corresponding path program 1 times [2019-10-13 21:13:55,674 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:55,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713226113] [2019-10-13 21:13:55,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:55,675 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:55,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:55,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713226113] [2019-10-13 21:13:55,972 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:55,973 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:55,973 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625904091] [2019-10-13 21:13:55,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:55,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:55,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:55,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:55,974 INFO L87 Difference]: Start difference. First operand 653 states and 883 transitions. Second operand 3 states. [2019-10-13 21:13:56,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:56,012 INFO L93 Difference]: Finished difference Result 1286 states and 1770 transitions. [2019-10-13 21:13:56,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:56,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2019-10-13 21:13:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:56,018 INFO L225 Difference]: With dead ends: 1286 [2019-10-13 21:13:56,018 INFO L226 Difference]: Without dead ends: 698 [2019-10-13 21:13:56,020 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 21:13:56,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2019-10-13 21:13:56,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 697. [2019-10-13 21:13:56,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2019-10-13 21:13:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 958 transitions. [2019-10-13 21:13:56,050 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 958 transitions. Word has length 240 [2019-10-13 21:13:56,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:56,051 INFO L462 AbstractCegarLoop]: Abstraction has 697 states and 958 transitions. [2019-10-13 21:13:56,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:56,051 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 958 transitions. [2019-10-13 21:13:56,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-10-13 21:13:56,056 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:56,056 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, 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] [2019-10-13 21:13:56,057 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:56,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:56,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1867683247, now seen corresponding path program 1 times [2019-10-13 21:13:56,057 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:56,058 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146495784] [2019-10-13 21:13:56,058 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:56,058 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:56,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 21:13:56,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146495784] [2019-10-13 21:13:56,250 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:56,250 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:56,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720603950] [2019-10-13 21:13:56,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:56,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:56,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:56,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:56,253 INFO L87 Difference]: Start difference. First operand 697 states and 958 transitions. Second operand 3 states. [2019-10-13 21:13:56,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:56,299 INFO L93 Difference]: Finished difference Result 1415 states and 1990 transitions. [2019-10-13 21:13:56,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:56,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2019-10-13 21:13:56,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:56,305 INFO L225 Difference]: With dead ends: 1415 [2019-10-13 21:13:56,306 INFO L226 Difference]: Without dead ends: 783 [2019-10-13 21:13:56,308 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 21:13:56,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2019-10-13 21:13:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 782. [2019-10-13 21:13:56,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2019-10-13 21:13:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1102 transitions. [2019-10-13 21:13:56,401 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1102 transitions. Word has length 241 [2019-10-13 21:13:56,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:56,402 INFO L462 AbstractCegarLoop]: Abstraction has 782 states and 1102 transitions. [2019-10-13 21:13:56,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:56,402 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1102 transitions. [2019-10-13 21:13:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-13 21:13:56,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:56,408 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, 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] [2019-10-13 21:13:56,408 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:56,409 INFO L82 PathProgramCache]: Analyzing trace with hash 1661984966, now seen corresponding path program 1 times [2019-10-13 21:13:56,409 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:56,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421858640] [2019-10-13 21:13:56,410 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:56,411 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:56,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:57,092 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 21:13:57,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421858640] [2019-10-13 21:13:57,094 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:57,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 21:13:57,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135959025] [2019-10-13 21:13:57,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:13:57,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:57,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:13:57,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:57,097 INFO L87 Difference]: Start difference. First operand 782 states and 1102 transitions. Second operand 19 states. [2019-10-13 21:14:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:03,756 INFO L93 Difference]: Finished difference Result 2650 states and 3737 transitions. [2019-10-13 21:14:03,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 21:14:03,757 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 244 [2019-10-13 21:14:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:03,778 INFO L225 Difference]: With dead ends: 2650 [2019-10-13 21:14:03,778 INFO L226 Difference]: Without dead ends: 2299 [2019-10-13 21:14:03,785 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-13 21:14:03,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2019-10-13 21:14:03,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2262. [2019-10-13 21:14:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2019-10-13 21:14:03,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 3204 transitions. [2019-10-13 21:14:03,920 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 3204 transitions. Word has length 244 [2019-10-13 21:14:03,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:03,922 INFO L462 AbstractCegarLoop]: Abstraction has 2262 states and 3204 transitions. [2019-10-13 21:14:03,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:14:03,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 3204 transitions. [2019-10-13 21:14:03,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-13 21:14:03,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:03,933 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, 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 21:14:03,934 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:03,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:03,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1677626999, now seen corresponding path program 1 times [2019-10-13 21:14:03,935 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:03,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141622404] [2019-10-13 21:14:03,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:03,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:03,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 21:14:04,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141622404] [2019-10-13 21:14:04,393 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:04,394 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-13 21:14:04,394 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532823325] [2019-10-13 21:14:04,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:14:04,395 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:04,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:14:04,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:14:04,396 INFO L87 Difference]: Start difference. First operand 2262 states and 3204 transitions. Second operand 18 states. [2019-10-13 21:14:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:05,025 INFO L93 Difference]: Finished difference Result 3915 states and 5505 transitions. [2019-10-13 21:14:05,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:14:05,025 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 245 [2019-10-13 21:14:05,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:05,061 INFO L225 Difference]: With dead ends: 3915 [2019-10-13 21:14:05,061 INFO L226 Difference]: Without dead ends: 2444 [2019-10-13 21:14:05,070 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:14:05,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2019-10-13 21:14:05,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2444. [2019-10-13 21:14:05,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2444 states. [2019-10-13 21:14:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 3473 transitions. [2019-10-13 21:14:05,241 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 3473 transitions. Word has length 245 [2019-10-13 21:14:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:05,242 INFO L462 AbstractCegarLoop]: Abstraction has 2444 states and 3473 transitions. [2019-10-13 21:14:05,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:14:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 3473 transitions. [2019-10-13 21:14:05,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-13 21:14:05,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:05,254 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, 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 21:14:05,254 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:05,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:05,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1407477613, now seen corresponding path program 1 times [2019-10-13 21:14:05,255 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:05,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454807933] [2019-10-13 21:14:05,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:05,255 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:05,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 21:14:05,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454807933] [2019-10-13 21:14:05,675 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:05,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:14:05,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192224095] [2019-10-13 21:14:05,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:14:05,676 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:05,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:14:05,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:14:05,677 INFO L87 Difference]: Start difference. First operand 2444 states and 3473 transitions. Second operand 15 states. [2019-10-13 21:14:10,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:10,058 INFO L93 Difference]: Finished difference Result 4117 states and 5799 transitions. [2019-10-13 21:14:10,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-13 21:14:10,064 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 245 [2019-10-13 21:14:10,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:10,085 INFO L225 Difference]: With dead ends: 4117 [2019-10-13 21:14:10,085 INFO L226 Difference]: Without dead ends: 2544 [2019-10-13 21:14:10,095 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-13 21:14:10,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2019-10-13 21:14:10,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2514. [2019-10-13 21:14:10,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2514 states. [2019-10-13 21:14:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3589 transitions. [2019-10-13 21:14:10,245 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3589 transitions. Word has length 245 [2019-10-13 21:14:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:10,248 INFO L462 AbstractCegarLoop]: Abstraction has 2514 states and 3589 transitions. [2019-10-13 21:14:10,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:14:10,248 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3589 transitions. [2019-10-13 21:14:10,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-13 21:14:10,261 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:10,261 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, 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] [2019-10-13 21:14:10,262 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:10,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:10,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1698334284, now seen corresponding path program 1 times [2019-10-13 21:14:10,262 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:10,262 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906817353] [2019-10-13 21:14:10,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:10,263 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:10,263 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-13 21:14:10,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906817353] [2019-10-13 21:14:10,567 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:10,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:14:10,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43230864] [2019-10-13 21:14:10,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:14:10,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:10,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:14:10,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:14:10,571 INFO L87 Difference]: Start difference. First operand 2514 states and 3589 transitions. Second operand 5 states. [2019-10-13 21:14:12,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:12,098 INFO L93 Difference]: Finished difference Result 6250 states and 8975 transitions. [2019-10-13 21:14:12,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:14:12,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 245 [2019-10-13 21:14:12,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:12,136 INFO L225 Difference]: With dead ends: 6250 [2019-10-13 21:14:12,136 INFO L226 Difference]: Without dead ends: 5415 [2019-10-13 21:14:12,144 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:12,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5415 states. [2019-10-13 21:14:12,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5415 to 5397. [2019-10-13 21:14:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5397 states. [2019-10-13 21:14:12,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 7750 transitions. [2019-10-13 21:14:12,434 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 7750 transitions. Word has length 245 [2019-10-13 21:14:12,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:12,435 INFO L462 AbstractCegarLoop]: Abstraction has 5397 states and 7750 transitions. [2019-10-13 21:14:12,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:14:12,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 7750 transitions. [2019-10-13 21:14:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-10-13 21:14:12,451 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:12,452 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, 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] [2019-10-13 21:14:12,452 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:12,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1684084139, now seen corresponding path program 1 times [2019-10-13 21:14:12,453 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:12,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977915182] [2019-10-13 21:14:12,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:12,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:12,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:12,794 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977915182] [2019-10-13 21:14:12,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189676197] [2019-10-13 21:14:12,795 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 21:14:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:13,442 INFO L256 TraceCheckSpWp]: Trace formula consists of 3311 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:14:13,463 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:14:13,711 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:13,712 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:14,107 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:14:14,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:14,254 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:14,395 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:14:14,396 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:14:14,396 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476434894] [2019-10-13 21:14:14,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:14:14,397 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:14,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:14:14,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:14:14,398 INFO L87 Difference]: Start difference. First operand 5397 states and 7750 transitions. Second operand 9 states. [2019-10-13 21:14:16,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:16,336 INFO L93 Difference]: Finished difference Result 10772 states and 15480 transitions. [2019-10-13 21:14:16,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:14:16,336 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 245 [2019-10-13 21:14:16,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:16,371 INFO L225 Difference]: With dead ends: 10772 [2019-10-13 21:14:16,372 INFO L226 Difference]: Without dead ends: 5411 [2019-10-13 21:14:16,392 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 484 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:14:16,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5411 states. [2019-10-13 21:14:16,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5411 to 5411. [2019-10-13 21:14:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5411 states. [2019-10-13 21:14:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5411 states to 5411 states and 7768 transitions. [2019-10-13 21:14:16,714 INFO L78 Accepts]: Start accepts. Automaton has 5411 states and 7768 transitions. Word has length 245 [2019-10-13 21:14:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:16,714 INFO L462 AbstractCegarLoop]: Abstraction has 5411 states and 7768 transitions. [2019-10-13 21:14:16,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:14:16,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5411 states and 7768 transitions. [2019-10-13 21:14:16,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-13 21:14:16,732 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:16,732 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, 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 21:14:16,953 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:16,953 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:16,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:16,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1955404021, now seen corresponding path program 1 times [2019-10-13 21:14:16,954 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:16,954 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216224949] [2019-10-13 21:14:16,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:16,955 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:16,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:17,365 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216224949] [2019-10-13 21:14:17,365 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127909402] [2019-10-13 21:14:17,365 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 21:14:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:17,961 INFO L256 TraceCheckSpWp]: Trace formula consists of 3312 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:14:17,973 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:14:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:18,088 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:18,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:18,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:18,496 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:18,497 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:14:18,497 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:14:18,497 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352214413] [2019-10-13 21:14:18,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:18,498 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:18,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:18,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:14:18,499 INFO L87 Difference]: Start difference. First operand 5411 states and 7768 transitions. Second operand 7 states. [2019-10-13 21:14:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:20,705 INFO L93 Difference]: Finished difference Result 10777 states and 15500 transitions. [2019-10-13 21:14:20,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:14:20,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2019-10-13 21:14:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:20,742 INFO L225 Difference]: With dead ends: 10777 [2019-10-13 21:14:20,742 INFO L226 Difference]: Without dead ends: 5417 [2019-10-13 21:14:20,762 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 491 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:14:20,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2019-10-13 21:14:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 5417. [2019-10-13 21:14:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5417 states. [2019-10-13 21:14:21,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5417 states to 5417 states and 7775 transitions. [2019-10-13 21:14:21,009 INFO L78 Accepts]: Start accepts. Automaton has 5417 states and 7775 transitions. Word has length 246 [2019-10-13 21:14:21,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:21,011 INFO L462 AbstractCegarLoop]: Abstraction has 5417 states and 7775 transitions. [2019-10-13 21:14:21,011 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:21,011 INFO L276 IsEmpty]: Start isEmpty. Operand 5417 states and 7775 transitions. [2019-10-13 21:14:21,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-13 21:14:21,025 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:21,026 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, 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 21:14:21,237 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:21,238 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:21,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:21,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1131930901, now seen corresponding path program 1 times [2019-10-13 21:14:21,239 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:21,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256058895] [2019-10-13 21:14:21,239 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:21,239 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:21,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:21,468 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:21,468 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256058895] [2019-10-13 21:14:21,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812292082] [2019-10-13 21:14:21,469 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 21:14:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:22,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 3313 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:14:22,143 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:14:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:14:22,373 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:22,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:14:22,815 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:22,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:14:22,992 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:14:22,992 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:14:22,992 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630557555] [2019-10-13 21:14:22,993 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:14:22,993 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:22,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:14:22,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:14:22,994 INFO L87 Difference]: Start difference. First operand 5417 states and 7775 transitions. Second operand 16 states.