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_spec4_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:16:30,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:16:30,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:16:30,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:16:30,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:16:30,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:16:30,550 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:16:30,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:16:30,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:16:30,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:16:30,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:16:30,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:16:30,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:16:30,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:16:30,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:16:30,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:16:30,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:16:30,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:16:30,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:16:30,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:16:30,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:16:30,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:16:30,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:16:30,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:16:30,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:16:30,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:16:30,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:16:30,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:16:30,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:16:30,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:16:30,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:16:30,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:16:30,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:16:30,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:16:30,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:16:30,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:16:30,588 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:16:30,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:16:30,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:16:30,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:16:30,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:16:30,591 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 21:16:30,604 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:16:30,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:16:30,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:16:30,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:16:30,606 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:16:30,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:16:30,607 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:16:30,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:16:30,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:16:30,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:16:30,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:16:30,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:16:30,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:16:30,608 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:16:30,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:16:30,608 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:16:30,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:16:30,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:16:30,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:16:30,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:16:30,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:16:30,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:30,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:16:30,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:16:30,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:16:30,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:16:30,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:16:30,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:16:30,611 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 21:16:30,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:16:30,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:16:30,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:16:30,915 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:16:30,915 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:16:30,916 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product27.cil.c [2019-10-13 21:16:30,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba3a163f3/7d69d579ef4e428b965630f9c1bdc0e8/FLAGc6adf94bf [2019-10-13 21:16:31,640 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:16:31,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product27.cil.c [2019-10-13 21:16:31,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba3a163f3/7d69d579ef4e428b965630f9c1bdc0e8/FLAGc6adf94bf [2019-10-13 21:16:31,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba3a163f3/7d69d579ef4e428b965630f9c1bdc0e8 [2019-10-13 21:16:31,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:16:31,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:16:31,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:31,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:16:31,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:16:31,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:31" (1/1) ... [2019-10-13 21:16:31,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b98ee7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:31, skipping insertion in model container [2019-10-13 21:16:31,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:31" (1/1) ... [2019-10-13 21:16:31,839 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:16:31,923 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:16:32,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:32,715 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:16:32,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:32,964 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:16:32,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32 WrapperNode [2019-10-13 21:16:32,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:32,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:16:32,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:16:32,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:16:32,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:32,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:33,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:33,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:33,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:33,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:33,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (1/1) ... [2019-10-13 21:16:33,189 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:16:33,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:16:33,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:16:33,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:16:33,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (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 21:16:33,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:16:33,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:16:33,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:33,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:16:33,275 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:16:33,276 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:16:33,277 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:16:33,277 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:16:33,278 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:16:33,278 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:16:33,279 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:16:33,279 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:16:33,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:16:33,280 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:16:33,280 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:16:33,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:16:33,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:16:33,283 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:16:33,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:16:33,284 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:16:33,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:16:33,284 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:16:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:16:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:16:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:16:33,285 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:16:33,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:16:33,286 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:16:33,286 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:16:33,286 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:16:33,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:16:33,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:16:33,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:16:33,288 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:16:33,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:16:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:16:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:16:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:16:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:16:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:16:33,289 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:16:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:16:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:16:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:16:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:16:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:16:33,290 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:16:33,291 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:16:33,291 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:16:33,291 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:16:33,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:16:33,291 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:16:33,291 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:16:33,292 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:16:33,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:16:33,292 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:16:33,292 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:16:33,292 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:16:33,292 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:16:33,293 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:16:33,293 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:33,293 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:16:33,294 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:16:33,294 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:16:33,295 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:16:33,295 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:16:33,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:33,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:33,295 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:33,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:16:33,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:16:33,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:16:33,296 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:16:33,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:16:33,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:33,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:16:33,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:16:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:16:33,298 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:16:33,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:16:33,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:16:33,299 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:16:33,299 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:16:33,299 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:16:33,300 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:16:33,300 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:16:33,301 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:16:33,301 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:16:33,301 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:16:33,302 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:16:33,302 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:16:33,302 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:16:33,302 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:16:33,302 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:16:33,302 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:16:33,303 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:33,303 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:16:33,303 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:16:33,303 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-13 21:16:33,303 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:16:33,303 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:16:33,303 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:16:33,304 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:16:33,304 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:16:33,304 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:16:33,304 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:16:33,304 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:16:33,304 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:16:33,304 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:16:33,305 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:16:33,305 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:16:33,305 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:16:33,305 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:16:33,305 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:16:33,305 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:16:33,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:16:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:16:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:16:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:16:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:16:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:16:33,307 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:16:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:16:33,308 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:16:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:16:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:16:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:16:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:16:33,309 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:16:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:16:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:16:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:16:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:16:33,310 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:16:33,311 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:16:33,314 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:16:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:16:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:16:33,315 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:16:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:16:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:16:33,316 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:16:33,323 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:16:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:16:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:16:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:16:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:16:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:16:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:16:33,324 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:16:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:16:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:16:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:16:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:16:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:16:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:16:33,325 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:16:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:16:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:16:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:16:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:16:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:16:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:16:33,326 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:16:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:16:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:16:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:16:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:16:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:16:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:16:33,327 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:16:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:16:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:16:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:16:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:16:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:16:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:16:33,328 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:16:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:16:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:16:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:16:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:16:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:16:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:16:33,329 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:16:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:16:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:16:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:16:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:16:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:16:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:16:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:33,330 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:16:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:16:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:16:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:16:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:16:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:16:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:16:33,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:16:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:16:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:16:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:16:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:16:33,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:16:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:16:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:16:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:16:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:16:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:16:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:16:33,333 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:16:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:16:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:16:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:16:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:16:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:16:33,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:16:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:16:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:16:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:16:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:16:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:16:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:16:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:16:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:16:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:16:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:16:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:16:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:16:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:16:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:16:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:16:33,337 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-13 21:16:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:16:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:16:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:16:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:16:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:35,484 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:35,485 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:35,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:35 BoogieIcfgContainer [2019-10-13 21:16:35,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:35,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:35,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:35,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:35,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:16:31" (1/3) ... [2019-10-13 21:16:35,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afa1225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:35, skipping insertion in model container [2019-10-13 21:16:35,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:32" (2/3) ... [2019-10-13 21:16:35,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afa1225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:35, skipping insertion in model container [2019-10-13 21:16:35,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:35" (3/3) ... [2019-10-13 21:16:35,496 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product27.cil.c [2019-10-13 21:16:35,506 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:35,522 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:35,539 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:35,581 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:35,581 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:35,581 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:35,582 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:35,582 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:35,582 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:35,582 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:35,582 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:35,615 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states. [2019-10-13 21:16:35,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 21:16:35,639 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:35,640 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:35,643 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:35,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:35,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1321708058, now seen corresponding path program 1 times [2019-10-13 21:16:35,660 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:35,660 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516008882] [2019-10-13 21:16:35,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:35,661 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:35,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:36,375 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516008882] [2019-10-13 21:16:36,376 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:36,377 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:36,377 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271491326] [2019-10-13 21:16:36,384 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:36,386 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:36,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:36,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:36,404 INFO L87 Difference]: Start difference. First operand 619 states. Second operand 2 states. [2019-10-13 21:16:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:36,523 INFO L93 Difference]: Finished difference Result 913 states and 1228 transitions. [2019-10-13 21:16:36,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:36,525 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-10-13 21:16:36,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:36,549 INFO L225 Difference]: With dead ends: 913 [2019-10-13 21:16:36,550 INFO L226 Difference]: Without dead ends: 590 [2019-10-13 21:16:36,557 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 21:16:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-10-13 21:16:36,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2019-10-13 21:16:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-10-13 21:16:36,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 800 transitions. [2019-10-13 21:16:36,665 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 800 transitions. Word has length 157 [2019-10-13 21:16:36,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:36,668 INFO L462 AbstractCegarLoop]: Abstraction has 590 states and 800 transitions. [2019-10-13 21:16:36,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:36,668 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 800 transitions. [2019-10-13 21:16:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:16:36,676 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:36,676 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:36,677 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:36,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:36,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1215035645, now seen corresponding path program 1 times [2019-10-13 21:16:36,677 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:36,677 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722733906] [2019-10-13 21:16:36,678 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:36,678 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:36,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:36,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722733906] [2019-10-13 21:16:36,967 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:36,967 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:36,967 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858672048] [2019-10-13 21:16:36,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:36,970 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:36,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:36,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:36,971 INFO L87 Difference]: Start difference. First operand 590 states and 800 transitions. Second operand 3 states. [2019-10-13 21:16:37,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:37,047 INFO L93 Difference]: Finished difference Result 896 states and 1194 transitions. [2019-10-13 21:16:37,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:37,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-13 21:16:37,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:37,059 INFO L225 Difference]: With dead ends: 896 [2019-10-13 21:16:37,059 INFO L226 Difference]: Without dead ends: 593 [2019-10-13 21:16:37,065 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 21:16:37,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-13 21:16:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 592. [2019-10-13 21:16:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-13 21:16:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 802 transitions. [2019-10-13 21:16:37,128 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 802 transitions. Word has length 158 [2019-10-13 21:16:37,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:37,130 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 802 transitions. [2019-10-13 21:16:37,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 802 transitions. [2019-10-13 21:16:37,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 21:16:37,136 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:37,137 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:37,137 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:37,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:37,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1817662030, now seen corresponding path program 1 times [2019-10-13 21:16:37,138 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:37,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361964583] [2019-10-13 21:16:37,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:37,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361964583] [2019-10-13 21:16:37,391 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:37,391 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:37,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090206883] [2019-10-13 21:16:37,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:37,393 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:37,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:37,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:37,395 INFO L87 Difference]: Start difference. First operand 592 states and 802 transitions. Second operand 3 states. [2019-10-13 21:16:37,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:37,450 INFO L93 Difference]: Finished difference Result 1164 states and 1608 transitions. [2019-10-13 21:16:37,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:37,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-10-13 21:16:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:37,462 INFO L225 Difference]: With dead ends: 1164 [2019-10-13 21:16:37,463 INFO L226 Difference]: Without dead ends: 637 [2019-10-13 21:16:37,466 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 21:16:37,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-10-13 21:16:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 636. [2019-10-13 21:16:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-10-13 21:16:37,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 877 transitions. [2019-10-13 21:16:37,518 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 877 transitions. Word has length 170 [2019-10-13 21:16:37,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:37,519 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 877 transitions. [2019-10-13 21:16:37,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 877 transitions. [2019-10-13 21:16:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:16:37,531 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:37,532 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:37,532 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:37,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:37,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1202923283, now seen corresponding path program 1 times [2019-10-13 21:16:37,533 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:37,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216110055] [2019-10-13 21:16:37,534 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,537 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:37,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216110055] [2019-10-13 21:16:37,838 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:37,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:37,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803248651] [2019-10-13 21:16:37,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:37,840 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:37,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:37,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:37,841 INFO L87 Difference]: Start difference. First operand 636 states and 877 transitions. Second operand 3 states. [2019-10-13 21:16:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:37,882 INFO L93 Difference]: Finished difference Result 1293 states and 1828 transitions. [2019-10-13 21:16:37,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:37,883 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:16:37,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:37,889 INFO L225 Difference]: With dead ends: 1293 [2019-10-13 21:16:37,889 INFO L226 Difference]: Without dead ends: 722 [2019-10-13 21:16:37,892 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 21:16:37,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2019-10-13 21:16:37,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 721. [2019-10-13 21:16:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2019-10-13 21:16:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1021 transitions. [2019-10-13 21:16:37,929 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1021 transitions. Word has length 171 [2019-10-13 21:16:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:37,930 INFO L462 AbstractCegarLoop]: Abstraction has 721 states and 1021 transitions. [2019-10-13 21:16:37,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:37,930 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1021 transitions. [2019-10-13 21:16:37,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 21:16:37,935 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:37,935 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:37,935 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:37,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1280448012, now seen corresponding path program 1 times [2019-10-13 21:16:37,936 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:37,937 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299670842] [2019-10-13 21:16:37,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:37,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:38,259 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:38,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299670842] [2019-10-13 21:16:38,260 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:38,260 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:16:38,260 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397715239] [2019-10-13 21:16:38,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:38,261 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:38,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:38,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:16:38,262 INFO L87 Difference]: Start difference. First operand 721 states and 1021 transitions. Second operand 7 states. [2019-10-13 21:16:42,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:42,237 INFO L93 Difference]: Finished difference Result 1319 states and 1803 transitions. [2019-10-13 21:16:42,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:42,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2019-10-13 21:16:42,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:42,247 INFO L225 Difference]: With dead ends: 1319 [2019-10-13 21:16:42,247 INFO L226 Difference]: Without dead ends: 1027 [2019-10-13 21:16:42,250 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:42,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-10-13 21:16:42,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1018. [2019-10-13 21:16:42,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2019-10-13 21:16:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1409 transitions. [2019-10-13 21:16:42,311 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1409 transitions. Word has length 174 [2019-10-13 21:16:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:42,312 INFO L462 AbstractCegarLoop]: Abstraction has 1018 states and 1409 transitions. [2019-10-13 21:16:42,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:42,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1409 transitions. [2019-10-13 21:16:42,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:16:42,319 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:42,320 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:42,320 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:42,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:42,321 INFO L82 PathProgramCache]: Analyzing trace with hash -285515108, now seen corresponding path program 1 times [2019-10-13 21:16:42,321 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:42,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672711767] [2019-10-13 21:16:42,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,322 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,323 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:42,765 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:42,766 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672711767] [2019-10-13 21:16:42,766 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:42,766 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-13 21:16:42,766 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421090909] [2019-10-13 21:16:42,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:16:42,767 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:42,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:16:42,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:16:42,769 INFO L87 Difference]: Start difference. First operand 1018 states and 1409 transitions. Second operand 18 states. [2019-10-13 21:16:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:43,465 INFO L93 Difference]: Finished difference Result 1701 states and 2320 transitions. [2019-10-13 21:16:43,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:16:43,469 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 175 [2019-10-13 21:16:43,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:43,480 INFO L225 Difference]: With dead ends: 1701 [2019-10-13 21:16:43,480 INFO L226 Difference]: Without dead ends: 1106 [2019-10-13 21:16:43,484 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2019-10-13 21:16:43,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1104. [2019-10-13 21:16:43,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2019-10-13 21:16:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1530 transitions. [2019-10-13 21:16:43,555 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1530 transitions. Word has length 175 [2019-10-13 21:16:43,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:43,557 INFO L462 AbstractCegarLoop]: Abstraction has 1104 states and 1530 transitions. [2019-10-13 21:16:43,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:16:43,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1530 transitions. [2019-10-13 21:16:43,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-13 21:16:43,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:43,562 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:43,562 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:43,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:43,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1555376384, now seen corresponding path program 1 times [2019-10-13 21:16:43,567 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:43,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508229382] [2019-10-13 21:16:43,567 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:43,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:43,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:43,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508229382] [2019-10-13 21:16:43,817 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:43,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:16:43,817 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463771411] [2019-10-13 21:16:43,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:16:43,818 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:43,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:16:43,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:16:43,820 INFO L87 Difference]: Start difference. First operand 1104 states and 1530 transitions. Second operand 8 states. [2019-10-13 21:16:44,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:44,977 INFO L93 Difference]: Finished difference Result 2327 states and 3151 transitions. [2019-10-13 21:16:44,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:44,977 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2019-10-13 21:16:44,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:44,991 INFO L225 Difference]: With dead ends: 2327 [2019-10-13 21:16:44,991 INFO L226 Difference]: Without dead ends: 1824 [2019-10-13 21:16:44,994 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2019-10-13 21:16:45,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1805. [2019-10-13 21:16:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2019-10-13 21:16:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2463 transitions. [2019-10-13 21:16:45,107 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2463 transitions. Word has length 184 [2019-10-13 21:16:45,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:45,109 INFO L462 AbstractCegarLoop]: Abstraction has 1805 states and 2463 transitions. [2019-10-13 21:16:45,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:16:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2463 transitions. [2019-10-13 21:16:45,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 21:16:45,115 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:45,116 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:45,116 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:45,117 INFO L82 PathProgramCache]: Analyzing trace with hash 266069784, now seen corresponding path program 1 times [2019-10-13 21:16:45,117 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:45,117 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068767234] [2019-10-13 21:16:45,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:45,118 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:45,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:45,543 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068767234] [2019-10-13 21:16:45,544 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:45,544 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-13 21:16:45,544 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656462596] [2019-10-13 21:16:45,545 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-13 21:16:45,545 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:45,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-13 21:16:45,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-10-13 21:16:45,546 INFO L87 Difference]: Start difference. First operand 1805 states and 2463 transitions. Second operand 17 states. [2019-10-13 21:16:46,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:46,637 INFO L93 Difference]: Finished difference Result 2470 states and 3341 transitions. [2019-10-13 21:16:46,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 21:16:46,637 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 185 [2019-10-13 21:16:46,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:46,649 INFO L225 Difference]: With dead ends: 2470 [2019-10-13 21:16:46,649 INFO L226 Difference]: Without dead ends: 1804 [2019-10-13 21:16:46,653 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:46,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2019-10-13 21:16:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1803. [2019-10-13 21:16:46,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1803 states. [2019-10-13 21:16:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2458 transitions. [2019-10-13 21:16:46,744 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2458 transitions. Word has length 185 [2019-10-13 21:16:46,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:46,745 INFO L462 AbstractCegarLoop]: Abstraction has 1803 states and 2458 transitions. [2019-10-13 21:16:46,745 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-13 21:16:46,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2458 transitions. [2019-10-13 21:16:46,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 21:16:46,750 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:46,750 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:46,751 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:46,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:46,751 INFO L82 PathProgramCache]: Analyzing trace with hash -2118439478, now seen corresponding path program 2 times [2019-10-13 21:16:46,751 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:46,751 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779701334] [2019-10-13 21:16:46,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:46,752 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:46,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:46,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779701334] [2019-10-13 21:16:46,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377500314] [2019-10-13 21:16:46,972 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 21:16:47,584 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:47,585 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:47,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 21:16:47,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:47,833 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:47,834 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:48,328 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:48,329 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:48,329 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-13 21:16:48,329 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930528031] [2019-10-13 21:16:48,330 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:48,330 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:48,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:48,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:48,331 INFO L87 Difference]: Start difference. First operand 1803 states and 2458 transitions. Second operand 14 states. [2019-10-13 21:16:51,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:51,446 INFO L93 Difference]: Finished difference Result 5381 states and 7385 transitions. [2019-10-13 21:16:51,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:51,446 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 185 [2019-10-13 21:16:51,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:51,486 INFO L225 Difference]: With dead ends: 5381 [2019-10-13 21:16:51,486 INFO L226 Difference]: Without dead ends: 5378 [2019-10-13 21:16:51,491 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 364 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:16:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2019-10-13 21:16:51,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 3961. [2019-10-13 21:16:51,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3961 states. [2019-10-13 21:16:51,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 5520 transitions. [2019-10-13 21:16:51,777 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 5520 transitions. Word has length 185 [2019-10-13 21:16:51,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:51,779 INFO L462 AbstractCegarLoop]: Abstraction has 3961 states and 5520 transitions. [2019-10-13 21:16:51,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 5520 transitions. [2019-10-13 21:16:51,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 21:16:51,791 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:51,792 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:51,997 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:51,998 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:51,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:51,999 INFO L82 PathProgramCache]: Analyzing trace with hash 416767069, now seen corresponding path program 1 times [2019-10-13 21:16:51,999 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:51,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302463968] [2019-10-13 21:16:51,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:52,000 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:16:52,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302463968] [2019-10-13 21:16:52,334 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21367847] [2019-10-13 21:16:52,334 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 21:16:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:52,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 2780 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:52,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:16:53,075 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:53,447 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:53,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:53,600 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 21:16:53,710 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:53,710 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-10-13 21:16:53,710 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29422803] [2019-10-13 21:16:53,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:53,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:53,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:53,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:16:53,713 INFO L87 Difference]: Start difference. First operand 3961 states and 5520 transitions. Second operand 9 states. [2019-10-13 21:16:55,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:55,372 INFO L93 Difference]: Finished difference Result 7896 states and 11014 transitions. [2019-10-13 21:16:55,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:55,373 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-10-13 21:16:55,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:55,397 INFO L225 Difference]: With dead ends: 7896 [2019-10-13 21:16:55,397 INFO L226 Difference]: Without dead ends: 3979 [2019-10-13 21:16:55,411 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:16:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2019-10-13 21:16:55,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3979. [2019-10-13 21:16:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3979 states. [2019-10-13 21:16:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5541 transitions. [2019-10-13 21:16:55,611 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5541 transitions. Word has length 187 [2019-10-13 21:16:55,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:55,612 INFO L462 AbstractCegarLoop]: Abstraction has 3979 states and 5541 transitions. [2019-10-13 21:16:55,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5541 transitions. [2019-10-13 21:16:55,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-13 21:16:55,625 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:55,626 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:55,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:55,835 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:55,835 INFO L82 PathProgramCache]: Analyzing trace with hash 600188279, now seen corresponding path program 1 times [2019-10-13 21:16:55,836 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:55,836 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908521921] [2019-10-13 21:16:55,836 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:55,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:55,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:16:56,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908521921] [2019-10-13 21:16:56,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049799937] [2019-10-13 21:16:56,075 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 21:16:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:56,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 2781 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:56,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:57,012 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:16:57,013 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:57,291 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:57,347 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:57,398 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:57,398 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-10-13 21:16:57,398 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777821724] [2019-10-13 21:16:57,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:57,399 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:57,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:57,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:16:57,400 INFO L87 Difference]: Start difference. First operand 3979 states and 5541 transitions. Second operand 7 states. [2019-10-13 21:16:58,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:58,583 INFO L93 Difference]: Finished difference Result 7866 states and 10975 transitions. [2019-10-13 21:16:58,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:58,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2019-10-13 21:16:58,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:58,611 INFO L225 Difference]: With dead ends: 7866 [2019-10-13 21:16:58,611 INFO L226 Difference]: Without dead ends: 3979 [2019-10-13 21:16:58,625 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 365 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:16:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2019-10-13 21:16:58,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3979. [2019-10-13 21:16:58,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3979 states. [2019-10-13 21:16:58,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5527 transitions. [2019-10-13 21:16:58,827 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5527 transitions. Word has length 188 [2019-10-13 21:16:58,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:58,827 INFO L462 AbstractCegarLoop]: Abstraction has 3979 states and 5527 transitions. [2019-10-13 21:16:58,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:58,827 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5527 transitions. [2019-10-13 21:16:58,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 21:16:58,842 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:58,842 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:59,052 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:59,052 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:59,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:59,053 INFO L82 PathProgramCache]: Analyzing trace with hash -418340196, now seen corresponding path program 1 times [2019-10-13 21:16:59,053 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:59,053 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220147018] [2019-10-13 21:16:59,053 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:59,054 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:59,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:16:59,289 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220147018] [2019-10-13 21:16:59,289 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654343213] [2019-10-13 21:16:59,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:59,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:59,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:17:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:17:00,046 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:17:00,304 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:00,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:17:00,382 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:17:00,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:17:00,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336261601] [2019-10-13 21:17:00,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:17:00,383 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:00,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:17:00,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:17:00,384 INFO L87 Difference]: Start difference. First operand 3979 states and 5527 transitions. Second operand 7 states. [2019-10-13 21:17:02,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:02,095 INFO L93 Difference]: Finished difference Result 7532 states and 10400 transitions. [2019-10-13 21:17:02,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:17:02,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2019-10-13 21:17:02,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:02,131 INFO L225 Difference]: With dead ends: 7532 [2019-10-13 21:17:02,132 INFO L226 Difference]: Without dead ends: 3991 [2019-10-13 21:17:02,144 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 367 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:17:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3991 states. [2019-10-13 21:17:02,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3991 to 3979. [2019-10-13 21:17:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3979 states.