java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:14:55,669 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:14:55,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:14:55,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:14:55,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:14:55,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:14:55,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:14:55,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:14:55,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:14:55,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:14:55,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:14:55,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:14:55,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:14:55,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:14:55,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:14:55,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:14:55,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:14:55,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:14:55,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:14:55,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:14:55,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:14:55,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:14:55,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:14:55,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:14:55,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:14:55,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:14:55,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:14:55,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:14:55,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:14:55,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:55,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:55,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:55,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:55,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:55,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:55,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:55,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:55,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:55,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:55,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:55,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:55,754 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 21:14:55,777 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:55,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:55,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:55,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:55,780 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:55,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:55,781 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:55,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:55,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:55,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:55,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:55,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:55,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:55,782 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:55,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:55,783 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:55,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:55,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:55,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:55,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:55,785 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:55,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:55,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:55,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:55,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:55,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:55,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:55,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:55,790 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 21:14:56,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:56,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:56,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:56,080 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:56,080 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:56,081 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c [2019-10-13 21:14:56,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7bf05fe/ae31b782712a4395b9828ea79ad6dd8a/FLAG383a1fa32 [2019-10-13 21:14:56,828 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:56,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product27.cil.c [2019-10-13 21:14:56,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7bf05fe/ae31b782712a4395b9828ea79ad6dd8a/FLAG383a1fa32 [2019-10-13 21:14:57,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de7bf05fe/ae31b782712a4395b9828ea79ad6dd8a [2019-10-13 21:14:57,080 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:57,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:57,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:57,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:57,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:57,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:57" (1/1) ... [2019-10-13 21:14:57,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64daa632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:57, skipping insertion in model container [2019-10-13 21:14:57,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:57" (1/1) ... [2019-10-13 21:14:57,100 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:57,188 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:57,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:57,901 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:58,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:58,181 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:58,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58 WrapperNode [2019-10-13 21:14:58,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:58,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:58,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:58,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:58,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (1/1) ... [2019-10-13 21:14:58,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:58,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:58,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:58,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:58,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (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 21:14:58,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:58,454 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:14:58,455 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:14:58,455 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:58,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:58,455 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:58,456 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:58,457 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:58,458 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:58,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:58,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:58,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:58,462 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:58,463 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:58,464 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:58,465 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:58,466 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:58,467 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:58,468 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:58,469 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:14:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:14:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:14:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:58,470 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:58,471 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:14:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:14:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-13 21:14:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:14:58,472 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:14:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:14:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:14:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:14:58,474 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:14:58,475 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:14:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:58,475 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:58,476 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:58,477 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:14:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:14:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:58,478 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:58,482 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:14:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:58,483 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:14:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:14:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:58,484 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:58,485 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:58,486 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:58,486 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:58,486 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:58,486 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:58,486 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:58,486 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:58,486 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:58,487 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:58,488 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:58,489 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:58,490 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:58,491 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:58,492 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:58,493 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:14:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:14:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:14:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:14:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:14:58,494 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:14:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:14:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-13 21:14:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:14:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:14:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:58,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:00,686 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:00,686 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:00,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:00 BoogieIcfgContainer [2019-10-13 21:15:00,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:00,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:00,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:00,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:00,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:57" (1/3) ... [2019-10-13 21:15:00,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b8d5f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:00, skipping insertion in model container [2019-10-13 21:15:00,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:58" (2/3) ... [2019-10-13 21:15:00,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b8d5f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:00, skipping insertion in model container [2019-10-13 21:15:00,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:00" (3/3) ... [2019-10-13 21:15:00,697 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product27.cil.c [2019-10-13 21:15:00,708 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:00,718 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:00,731 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:00,777 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:00,777 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:00,778 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:00,778 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:00,778 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:00,779 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:00,779 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:00,787 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states. [2019-10-13 21:15:00,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 21:15:00,872 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:00,873 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:00,876 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:00,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:00,883 INFO L82 PathProgramCache]: Analyzing trace with hash -2063245919, now seen corresponding path program 1 times [2019-10-13 21:15:00,892 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:00,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401082485] [2019-10-13 21:15:00,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:00,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:00,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:01,701 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:01,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401082485] [2019-10-13 21:15:01,703 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:01,703 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:01,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182040164] [2019-10-13 21:15:01,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:01,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:01,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:01,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:01,725 INFO L87 Difference]: Start difference. First operand 621 states. Second operand 2 states. [2019-10-13 21:15:01,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:01,836 INFO L93 Difference]: Finished difference Result 917 states and 1239 transitions. [2019-10-13 21:15:01,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:01,839 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 190 [2019-10-13 21:15:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:01,875 INFO L225 Difference]: With dead ends: 917 [2019-10-13 21:15:01,876 INFO L226 Difference]: Without dead ends: 592 [2019-10-13 21:15:01,888 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:01,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-13 21:15:01,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2019-10-13 21:15:02,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-13 21:15:02,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 803 transitions. [2019-10-13 21:15:02,012 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 803 transitions. Word has length 190 [2019-10-13 21:15:02,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:02,017 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 803 transitions. [2019-10-13 21:15:02,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:02,017 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 803 transitions. [2019-10-13 21:15:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-13 21:15:02,027 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:02,028 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:02,028 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:02,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:02,030 INFO L82 PathProgramCache]: Analyzing trace with hash -569297871, now seen corresponding path program 1 times [2019-10-13 21:15:02,030 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:02,030 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877079004] [2019-10-13 21:15:02,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,031 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:02,437 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877079004] [2019-10-13 21:15:02,438 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:02,438 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:02,438 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965522490] [2019-10-13 21:15:02,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:02,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:02,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:02,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:02,447 INFO L87 Difference]: Start difference. First operand 592 states and 803 transitions. Second operand 3 states. [2019-10-13 21:15:02,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:02,540 INFO L93 Difference]: Finished difference Result 900 states and 1200 transitions. [2019-10-13 21:15:02,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:02,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2019-10-13 21:15:02,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:02,548 INFO L225 Difference]: With dead ends: 900 [2019-10-13 21:15:02,548 INFO L226 Difference]: Without dead ends: 595 [2019-10-13 21:15:02,553 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:02,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2019-10-13 21:15:02,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 594. [2019-10-13 21:15:02,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2019-10-13 21:15:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 805 transitions. [2019-10-13 21:15:02,618 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 805 transitions. Word has length 191 [2019-10-13 21:15:02,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:02,619 INFO L462 AbstractCegarLoop]: Abstraction has 594 states and 805 transitions. [2019-10-13 21:15:02,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 805 transitions. [2019-10-13 21:15:02,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:15:02,625 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:02,626 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:02,626 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:02,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:02,626 INFO L82 PathProgramCache]: Analyzing trace with hash -306591454, now seen corresponding path program 1 times [2019-10-13 21:15:02,627 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:02,627 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262020466] [2019-10-13 21:15:02,627 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,627 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:02,826 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:02,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262020466] [2019-10-13 21:15:02,827 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:02,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:02,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176757967] [2019-10-13 21:15:02,828 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:02,828 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:02,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:02,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:02,829 INFO L87 Difference]: Start difference. First operand 594 states and 805 transitions. Second operand 3 states. [2019-10-13 21:15:02,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:02,870 INFO L93 Difference]: Finished difference Result 1168 states and 1614 transitions. [2019-10-13 21:15:02,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:02,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 203 [2019-10-13 21:15:02,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:02,876 INFO L225 Difference]: With dead ends: 1168 [2019-10-13 21:15:02,876 INFO L226 Difference]: Without dead ends: 639 [2019-10-13 21:15:02,878 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2019-10-13 21:15:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 638. [2019-10-13 21:15:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 638 states. [2019-10-13 21:15:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 880 transitions. [2019-10-13 21:15:02,909 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 880 transitions. Word has length 203 [2019-10-13 21:15:02,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:02,910 INFO L462 AbstractCegarLoop]: Abstraction has 638 states and 880 transitions. [2019-10-13 21:15:02,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 880 transitions. [2019-10-13 21:15:02,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:15:02,918 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:02,920 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:02,920 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:02,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:02,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1906834190, now seen corresponding path program 1 times [2019-10-13 21:15:02,921 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:02,922 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570473455] [2019-10-13 21:15:02,923 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,923 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:03,242 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:03,243 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570473455] [2019-10-13 21:15:03,243 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:03,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:03,244 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002433028] [2019-10-13 21:15:03,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:03,245 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:03,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:03,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:03,246 INFO L87 Difference]: Start difference. First operand 638 states and 880 transitions. Second operand 3 states. [2019-10-13 21:15:03,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:03,291 INFO L93 Difference]: Finished difference Result 1297 states and 1834 transitions. [2019-10-13 21:15:03,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:03,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 204 [2019-10-13 21:15:03,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:03,297 INFO L225 Difference]: With dead ends: 1297 [2019-10-13 21:15:03,298 INFO L226 Difference]: Without dead ends: 724 [2019-10-13 21:15:03,300 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:03,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2019-10-13 21:15:03,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 723. [2019-10-13 21:15:03,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2019-10-13 21:15:03,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1024 transitions. [2019-10-13 21:15:03,334 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1024 transitions. Word has length 204 [2019-10-13 21:15:03,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:03,335 INFO L462 AbstractCegarLoop]: Abstraction has 723 states and 1024 transitions. [2019-10-13 21:15:03,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1024 transitions. [2019-10-13 21:15:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-13 21:15:03,340 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:03,340 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:03,341 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:03,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:03,341 INFO L82 PathProgramCache]: Analyzing trace with hash 332587580, now seen corresponding path program 1 times [2019-10-13 21:15:03,341 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:03,342 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021359504] [2019-10-13 21:15:03,342 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:03,342 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:03,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:03,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021359504] [2019-10-13 21:15:03,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:03,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:15:03,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058599066] [2019-10-13 21:15:03,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:15:03,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:03,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:15:03,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:15:03,561 INFO L87 Difference]: Start difference. First operand 723 states and 1024 transitions. Second operand 8 states. [2019-10-13 21:15:03,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:03,634 INFO L93 Difference]: Finished difference Result 1015 states and 1409 transitions. [2019-10-13 21:15:03,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:15:03,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 207 [2019-10-13 21:15:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:03,644 INFO L225 Difference]: With dead ends: 1015 [2019-10-13 21:15:03,645 INFO L226 Difference]: Without dead ends: 723 [2019-10-13 21:15:03,647 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:15:03,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2019-10-13 21:15:03,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2019-10-13 21:15:03,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2019-10-13 21:15:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1023 transitions. [2019-10-13 21:15:03,692 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1023 transitions. Word has length 207 [2019-10-13 21:15:03,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:03,694 INFO L462 AbstractCegarLoop]: Abstraction has 723 states and 1023 transitions. [2019-10-13 21:15:03,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:15:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1023 transitions. [2019-10-13 21:15:03,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 21:15:03,700 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:03,700 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:03,701 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:03,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:03,701 INFO L82 PathProgramCache]: Analyzing trace with hash -753364862, now seen corresponding path program 1 times [2019-10-13 21:15:03,702 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:03,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565281826] [2019-10-13 21:15:03,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:03,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:03,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:04,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565281826] [2019-10-13 21:15:04,016 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:04,016 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:15:04,017 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056949664] [2019-10-13 21:15:04,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:04,018 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:04,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:04,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:15:04,018 INFO L87 Difference]: Start difference. First operand 723 states and 1023 transitions. Second operand 7 states. [2019-10-13 21:15:07,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:07,280 INFO L93 Difference]: Finished difference Result 1336 states and 1834 transitions. [2019-10-13 21:15:07,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:07,281 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2019-10-13 21:15:07,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:07,291 INFO L225 Difference]: With dead ends: 1336 [2019-10-13 21:15:07,292 INFO L226 Difference]: Without dead ends: 1040 [2019-10-13 21:15:07,294 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:15:07,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2019-10-13 21:15:07,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1031. [2019-10-13 21:15:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2019-10-13 21:15:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1428 transitions. [2019-10-13 21:15:07,372 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1428 transitions. Word has length 214 [2019-10-13 21:15:07,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:07,375 INFO L462 AbstractCegarLoop]: Abstraction has 1031 states and 1428 transitions. [2019-10-13 21:15:07,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1428 transitions. [2019-10-13 21:15:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-13 21:15:07,383 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:07,384 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:07,384 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:07,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:07,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1756585351, now seen corresponding path program 1 times [2019-10-13 21:15:07,385 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:07,386 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819331833] [2019-10-13 21:15:07,391 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:07,391 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:07,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:08,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819331833] [2019-10-13 21:15:08,095 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:08,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2019-10-13 21:15:08,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145402431] [2019-10-13 21:15:08,097 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-10-13 21:15:08,098 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:08,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-10-13 21:15:08,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:08,099 INFO L87 Difference]: Start difference. First operand 1031 states and 1428 transitions. Second operand 28 states. [2019-10-13 21:15:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:09,052 INFO L93 Difference]: Finished difference Result 1780 states and 2440 transitions. [2019-10-13 21:15:09,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-10-13 21:15:09,053 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 215 [2019-10-13 21:15:09,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:09,067 INFO L225 Difference]: With dead ends: 1780 [2019-10-13 21:15:09,067 INFO L226 Difference]: Without dead ends: 1172 [2019-10-13 21:15:09,075 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=1459, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:15:09,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2019-10-13 21:15:09,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1167. [2019-10-13 21:15:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2019-10-13 21:15:09,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1607 transitions. [2019-10-13 21:15:09,162 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1607 transitions. Word has length 215 [2019-10-13 21:15:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:09,164 INFO L462 AbstractCegarLoop]: Abstraction has 1167 states and 1607 transitions. [2019-10-13 21:15:09,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-10-13 21:15:09,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1607 transitions. [2019-10-13 21:15:09,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-13 21:15:09,170 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:09,171 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:09,171 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:09,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:09,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1759537394, now seen corresponding path program 1 times [2019-10-13 21:15:09,172 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:09,172 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805921606] [2019-10-13 21:15:09,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:09,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:09,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:09,508 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:15:09,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805921606] [2019-10-13 21:15:09,509 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:09,509 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:15:09,509 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276247693] [2019-10-13 21:15:09,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:15:09,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:09,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:15:09,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:15:09,512 INFO L87 Difference]: Start difference. First operand 1167 states and 1607 transitions. Second operand 8 states. [2019-10-13 21:15:15,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:15,589 INFO L93 Difference]: Finished difference Result 3413 states and 4661 transitions. [2019-10-13 21:15:15,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:15:15,589 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 246 [2019-10-13 21:15:15,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:15,632 INFO L225 Difference]: With dead ends: 3413 [2019-10-13 21:15:15,633 INFO L226 Difference]: Without dead ends: 2693 [2019-10-13 21:15:15,640 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:15:15,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2019-10-13 21:15:15,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 2681. [2019-10-13 21:15:15,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2681 states. [2019-10-13 21:15:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 3659 transitions. [2019-10-13 21:15:15,856 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 3659 transitions. Word has length 246 [2019-10-13 21:15:15,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:15,857 INFO L462 AbstractCegarLoop]: Abstraction has 2681 states and 3659 transitions. [2019-10-13 21:15:15,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:15:15,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 3659 transitions. [2019-10-13 21:15:15,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-13 21:15:15,873 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:15,873 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:15,874 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:15,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:15,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1250875765, now seen corresponding path program 1 times [2019-10-13 21:15:15,875 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:15,875 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344322996] [2019-10-13 21:15:15,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:15,876 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:15,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:15:16,508 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344322996] [2019-10-13 21:15:16,509 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:16,509 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-10-13 21:15:16,510 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457853626] [2019-10-13 21:15:16,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 21:15:16,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:16,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 21:15:16,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:15:16,512 INFO L87 Difference]: Start difference. First operand 2681 states and 3659 transitions. Second operand 20 states. [2019-10-13 21:15:17,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:17,109 INFO L93 Difference]: Finished difference Result 4548 states and 6148 transitions. [2019-10-13 21:15:17,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 21:15:17,109 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 247 [2019-10-13 21:15:17,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:17,129 INFO L225 Difference]: With dead ends: 4548 [2019-10-13 21:15:17,130 INFO L226 Difference]: Without dead ends: 2358 [2019-10-13 21:15:17,143 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2019-10-13 21:15:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2348. [2019-10-13 21:15:17,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2348 states. [2019-10-13 21:15:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 3197 transitions. [2019-10-13 21:15:17,282 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 3197 transitions. Word has length 247 [2019-10-13 21:15:17,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:17,282 INFO L462 AbstractCegarLoop]: Abstraction has 2348 states and 3197 transitions. [2019-10-13 21:15:17,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-13 21:15:17,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 3197 transitions. [2019-10-13 21:15:17,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-10-13 21:15:17,290 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:17,290 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:17,290 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:17,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:17,291 INFO L82 PathProgramCache]: Analyzing trace with hash -63967557, now seen corresponding path program 1 times [2019-10-13 21:15:17,291 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:17,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6790583] [2019-10-13 21:15:17,292 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:17,292 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:17,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:17,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:17,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6790583] [2019-10-13 21:15:17,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131423674] [2019-10-13 21:15:17,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:18,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 3103 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:18,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:18,504 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:18,504 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:18,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:19,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:19,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:19,231 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:19,232 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:15:19,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108809264] [2019-10-13 21:15:19,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:19,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:19,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:19,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:15:19,238 INFO L87 Difference]: Start difference. First operand 2348 states and 3197 transitions. Second operand 9 states. [2019-10-13 21:15:21,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:21,964 INFO L93 Difference]: Finished difference Result 4674 states and 6374 transitions. [2019-10-13 21:15:21,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:21,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 256 [2019-10-13 21:15:21,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:21,984 INFO L225 Difference]: With dead ends: 4674 [2019-10-13 21:15:21,985 INFO L226 Difference]: Without dead ends: 2362 [2019-10-13 21:15:21,995 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 498 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 21:15:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2019-10-13 21:15:22,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2019-10-13 21:15:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2362 states. [2019-10-13 21:15:22,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3215 transitions. [2019-10-13 21:15:22,136 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3215 transitions. Word has length 256 [2019-10-13 21:15:22,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:22,137 INFO L462 AbstractCegarLoop]: Abstraction has 2362 states and 3215 transitions. [2019-10-13 21:15:22,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3215 transitions. [2019-10-13 21:15:22,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2019-10-13 21:15:22,144 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,144 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:22,362 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:22,363 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2146922366, now seen corresponding path program 1 times [2019-10-13 21:15:22,364 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,364 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371392357] [2019-10-13 21:15:22,364 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,365 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:22,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371392357] [2019-10-13 21:15:22,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838681986] [2019-10-13 21:15:22,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:23,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 3104 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:23,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:23,495 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:23,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:23,826 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:23,899 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:23,899 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:15:23,900 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340716071] [2019-10-13 21:15:23,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:23,901 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:23,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:23,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:23,901 INFO L87 Difference]: Start difference. First operand 2362 states and 3215 transitions. Second operand 7 states. [2019-10-13 21:15:25,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:25,007 INFO L93 Difference]: Finished difference Result 4675 states and 6380 transitions. [2019-10-13 21:15:25,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:25,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2019-10-13 21:15:25,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:25,023 INFO L225 Difference]: With dead ends: 4675 [2019-10-13 21:15:25,023 INFO L226 Difference]: Without dead ends: 2364 [2019-10-13 21:15:25,032 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 505 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:15:25,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2364 states. [2019-10-13 21:15:25,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2364 to 2364. [2019-10-13 21:15:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2364 states. [2019-10-13 21:15:25,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2364 states to 2364 states and 3218 transitions. [2019-10-13 21:15:25,143 INFO L78 Accepts]: Start accepts. Automaton has 2364 states and 3218 transitions. Word has length 257 [2019-10-13 21:15:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:25,144 INFO L462 AbstractCegarLoop]: Abstraction has 2364 states and 3218 transitions. [2019-10-13 21:15:25,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:25,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2364 states and 3218 transitions. [2019-10-13 21:15:25,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2019-10-13 21:15:25,155 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:25,157 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:25,374 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:25,374 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:25,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:25,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1815238406, now seen corresponding path program 1 times [2019-10-13 21:15:25,375 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:25,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068155634] [2019-10-13 21:15:25,376 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:25,376 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:25,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:25,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068155634] [2019-10-13 21:15:25,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37358287] [2019-10-13 21:15:25,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:26,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 3105 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:26,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:26,505 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:26,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:26,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:27,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:27,196 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:27,196 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:15:27,197 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268119944] [2019-10-13 21:15:27,198 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:27,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:27,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:27,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:15:27,199 INFO L87 Difference]: Start difference. First operand 2364 states and 3218 transitions. Second operand 16 states.