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 0.1.24-13a467a-m [2019-10-15 01:15:32,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:15:32,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:15:32,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:15:32,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:15:32,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:15:32,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:15:32,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:15:32,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:15:32,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:15:32,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:15:32,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:15:32,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:15:32,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:15:32,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:15:32,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:15:32,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:15:32,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:15:32,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:15:32,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:15:32,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:15:32,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:15:32,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:15:32,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:15:32,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:15:32,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:15:32,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:15:32,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:15:32,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:15:32,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:15:32,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:15:32,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:15:32,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:15:32,788 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:15:32,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:15:32,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:15:32,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:15:32,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:15:32,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:15:32,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:15:32,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:15:32,795 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 [2019-10-15 01:15:32,828 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:15:32,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:15:32,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:15:32,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:15:32,832 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:15:32,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:15:32,832 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:15:32,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:15:32,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:15:32,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:15:32,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:15:32,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:15:32,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:15:32,835 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:15:32,836 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:15:32,836 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:15:32,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:15:32,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:15:32,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:15:32,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:15:32,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:15:32,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:32,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:15:32,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:15:32,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:15:32,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:15:32,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:15:32,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:15:32,839 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 [2019-10-15 01:15:33,177 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:15:33,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:15:33,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:15:33,210 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:15:33,211 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:15:33,211 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product27.cil.c [2019-10-15 01:15:33,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c8a8ff97/17fbe0847cbd4d2b9f25b027f7659564/FLAGb9927fe9e [2019-10-15 01:15:33,963 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:15:33,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product27.cil.c [2019-10-15 01:15:33,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c8a8ff97/17fbe0847cbd4d2b9f25b027f7659564/FLAGb9927fe9e [2019-10-15 01:15:34,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c8a8ff97/17fbe0847cbd4d2b9f25b027f7659564 [2019-10-15 01:15:34,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:15:34,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:15:34,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:34,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:15:34,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:15:34,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:34" (1/1) ... [2019-10-15 01:15:34,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f58ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:34, skipping insertion in model container [2019-10-15 01:15:34,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:34" (1/1) ... [2019-10-15 01:15:34,117 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:15:34,195 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:15:34,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:35,028 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:15:35,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:35,338 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:15:35,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:35 WrapperNode [2019-10-15 01:15:35,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:35,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:15:35,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:15:35,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:15:35,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:35" (1/1) ... [2019-10-15 01:15:35,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:35" (1/1) ... [2019-10-15 01:15:35,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:35" (1/1) ... [2019-10-15 01:15:35,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:35" (1/1) ... [2019-10-15 01:15:35,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:35" (1/1) ... [2019-10-15 01:15:35,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:35" (1/1) ... [2019-10-15 01:15:35,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:35" (1/1) ... [2019-10-15 01:15:35,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:15:35,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:15:35,572 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:15:35,572 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:15:35,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:35" (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 [2019-10-15 01:15:35,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:15:35,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:15:35,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:35,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:15:35,630 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:15:35,630 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:15:35,630 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:15:35,630 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:15:35,630 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:15:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:15:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:15:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:15:35,631 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:15:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:15:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:15:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:15:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:15:35,632 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:15:35,633 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:15:35,633 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:15:35,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:15:35,635 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:15:35,635 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:15:35,635 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:15:35,635 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:15:35,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:15:35,637 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:15:35,637 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:15:35,637 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:15:35,637 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:15:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:15:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:15:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:15:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:15:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:15:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:15:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:15:35,638 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:15:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:15:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:15:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:15:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:15:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:15:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:15:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:15:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:15:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:15:35,639 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:15:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:15:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:15:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:15:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:15:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:15:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:15:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:15:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:15:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:15:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:15:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:15:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:15:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:15:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:15:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:15:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:15:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:15:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:15:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:15:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:15:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:15:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:15:35,642 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:15:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:15:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:15:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:15:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:15:35,643 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:15:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:15:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:15:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:15:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:15:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:15:35,644 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:15:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:15:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:15:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:15:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:15:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:15:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:15:35,645 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:15:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:15:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:15:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:15:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:15:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:15:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-15 01:15:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:15:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:15:35,646 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:15:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:15:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:15:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:15:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:15:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:15:35,647 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:15:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:15:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:15:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:15:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:15:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:15:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:15:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:15:35,648 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:15:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:15:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:15:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:15:35,649 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:15:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:15:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:15:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:15:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:15:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:15:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:15:35,650 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:15:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:15:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:15:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:15:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:15:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:15:35,651 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:15:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:15:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:15:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:15:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:15:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:15:35,652 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:15:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:15:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:15:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:15:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:15:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:15:35,653 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:15:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:15:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:15:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:15:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:15:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:15:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:15:35,654 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:15:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:15:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:15:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:15:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:15:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:15:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:15:35,655 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:15:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:15:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:15:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:15:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:15:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:15:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:15:35,656 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:15:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:15:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:15:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:15:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:15:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:15:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:15:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:15:35,657 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:15:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:15:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:15:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:15:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:15:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:15:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:15:35,658 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:15:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:15:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:15:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:15:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:15:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:15:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:15:35,659 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:15:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:15:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:15:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:15:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:15:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:15:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:15:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:15:35,660 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:15:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:15:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:15:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:15:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:15:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:35,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:15:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:15:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:15:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:15:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:15:35,662 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:15:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:15:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:15:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:15:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:15:35,663 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:15:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:15:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:15:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:15:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:15:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:15:35,664 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:15:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:15:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:15:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:15:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:15:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:35,665 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:15:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:15:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:15:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:15:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:15:35,666 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:15:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:15:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:15:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:15:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:15:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:15:35,667 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:15:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:15:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-15 01:15:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:15:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:15:35,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:15:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:15:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:37,727 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:37,727 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:37,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:37 BoogieIcfgContainer [2019-10-15 01:15:37,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:37,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:37,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:37,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:37,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:15:34" (1/3) ... [2019-10-15 01:15:37,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8f04f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:37, skipping insertion in model container [2019-10-15 01:15:37,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:35" (2/3) ... [2019-10-15 01:15:37,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c8f04f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:37, skipping insertion in model container [2019-10-15 01:15:37,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:37" (3/3) ... [2019-10-15 01:15:37,741 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product27.cil.c [2019-10-15 01:15:37,752 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:37,766 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:37,780 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:37,827 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:37,828 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:37,828 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:37,828 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:37,829 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:37,829 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:37,829 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:37,838 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states. [2019-10-15 01:15:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 01:15:37,920 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:37,922 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] [2019-10-15 01:15:37,924 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:37,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:37,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1321708058, now seen corresponding path program 1 times [2019-10-15 01:15:37,941 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:37,941 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154654522] [2019-10-15 01:15:37,942 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:37,942 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:37,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:38,602 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154654522] [2019-10-15 01:15:38,603 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:38,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:38,604 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110196577] [2019-10-15 01:15:38,611 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:38,613 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:38,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:38,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:38,631 INFO L87 Difference]: Start difference. First operand 619 states. Second operand 2 states. [2019-10-15 01:15:38,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:38,720 INFO L93 Difference]: Finished difference Result 913 states and 1228 transitions. [2019-10-15 01:15:38,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:38,722 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2019-10-15 01:15:38,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:38,762 INFO L225 Difference]: With dead ends: 913 [2019-10-15 01:15:38,763 INFO L226 Difference]: Without dead ends: 590 [2019-10-15 01:15:38,778 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 [2019-10-15 01:15:38,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-10-15 01:15:38,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 590. [2019-10-15 01:15:38,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2019-10-15 01:15:38,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 800 transitions. [2019-10-15 01:15:38,890 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 800 transitions. Word has length 157 [2019-10-15 01:15:38,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:38,893 INFO L462 AbstractCegarLoop]: Abstraction has 590 states and 800 transitions. [2019-10-15 01:15:38,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:38,893 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 800 transitions. [2019-10-15 01:15:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:15:38,905 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:38,906 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] [2019-10-15 01:15:38,906 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:38,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:38,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1215035645, now seen corresponding path program 1 times [2019-10-15 01:15:38,908 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:38,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366789899] [2019-10-15 01:15:38,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:38,908 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:38,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:39,237 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:39,238 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366789899] [2019-10-15 01:15:39,238 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:39,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:39,239 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312371684] [2019-10-15 01:15:39,245 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:39,246 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:39,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:39,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:39,246 INFO L87 Difference]: Start difference. First operand 590 states and 800 transitions. Second operand 3 states. [2019-10-15 01:15:39,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:39,304 INFO L93 Difference]: Finished difference Result 896 states and 1194 transitions. [2019-10-15 01:15:39,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:39,305 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-15 01:15:39,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:39,315 INFO L225 Difference]: With dead ends: 896 [2019-10-15 01:15:39,315 INFO L226 Difference]: Without dead ends: 593 [2019-10-15 01:15:39,320 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 [2019-10-15 01:15:39,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2019-10-15 01:15:39,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 592. [2019-10-15 01:15:39,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2019-10-15 01:15:39,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 802 transitions. [2019-10-15 01:15:39,418 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 802 transitions. Word has length 158 [2019-10-15 01:15:39,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:39,418 INFO L462 AbstractCegarLoop]: Abstraction has 592 states and 802 transitions. [2019-10-15 01:15:39,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:39,419 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 802 transitions. [2019-10-15 01:15:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 01:15:39,422 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:39,422 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] [2019-10-15 01:15:39,423 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:39,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:39,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1817662030, now seen corresponding path program 1 times [2019-10-15 01:15:39,423 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:39,424 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025503176] [2019-10-15 01:15:39,424 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:39,424 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:39,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:39,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025503176] [2019-10-15 01:15:39,674 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:39,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:39,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667204044] [2019-10-15 01:15:39,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:39,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:39,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:39,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:39,682 INFO L87 Difference]: Start difference. First operand 592 states and 802 transitions. Second operand 3 states. [2019-10-15 01:15:39,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:39,753 INFO L93 Difference]: Finished difference Result 1164 states and 1608 transitions. [2019-10-15 01:15:39,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:39,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-10-15 01:15:39,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:39,766 INFO L225 Difference]: With dead ends: 1164 [2019-10-15 01:15:39,766 INFO L226 Difference]: Without dead ends: 637 [2019-10-15 01:15:39,770 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 [2019-10-15 01:15:39,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-10-15 01:15:39,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 636. [2019-10-15 01:15:39,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 636 states. [2019-10-15 01:15:39,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 877 transitions. [2019-10-15 01:15:39,827 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 877 transitions. Word has length 170 [2019-10-15 01:15:39,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:39,828 INFO L462 AbstractCegarLoop]: Abstraction has 636 states and 877 transitions. [2019-10-15 01:15:39,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:39,828 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 877 transitions. [2019-10-15 01:15:39,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:15:39,839 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:39,839 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] [2019-10-15 01:15:39,840 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:39,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:39,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1202923283, now seen corresponding path program 1 times [2019-10-15 01:15:39,841 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:39,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142385426] [2019-10-15 01:15:39,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:39,842 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:39,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:40,089 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142385426] [2019-10-15 01:15:40,090 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:40,090 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:40,090 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715270867] [2019-10-15 01:15:40,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:40,092 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:40,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:40,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:40,092 INFO L87 Difference]: Start difference. First operand 636 states and 877 transitions. Second operand 3 states. [2019-10-15 01:15:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:40,137 INFO L93 Difference]: Finished difference Result 1293 states and 1828 transitions. [2019-10-15 01:15:40,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:40,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 01:15:40,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:40,145 INFO L225 Difference]: With dead ends: 1293 [2019-10-15 01:15:40,146 INFO L226 Difference]: Without dead ends: 722 [2019-10-15 01:15:40,148 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 [2019-10-15 01:15:40,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2019-10-15 01:15:40,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 721. [2019-10-15 01:15:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2019-10-15 01:15:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 1021 transitions. [2019-10-15 01:15:40,190 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 1021 transitions. Word has length 171 [2019-10-15 01:15:40,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:40,191 INFO L462 AbstractCegarLoop]: Abstraction has 721 states and 1021 transitions. [2019-10-15 01:15:40,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:40,191 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 1021 transitions. [2019-10-15 01:15:40,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-15 01:15:40,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:40,196 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] [2019-10-15 01:15:40,196 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:40,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:40,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1280448012, now seen corresponding path program 1 times [2019-10-15 01:15:40,197 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:40,198 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114935217] [2019-10-15 01:15:40,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:40,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:40,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:40,464 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:40,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114935217] [2019-10-15 01:15:40,465 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:40,465 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:15:40,466 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618919317] [2019-10-15 01:15:40,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:40,467 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:40,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:40,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:15:40,467 INFO L87 Difference]: Start difference. First operand 721 states and 1021 transitions. Second operand 7 states. [2019-10-15 01:15:44,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:44,245 INFO L93 Difference]: Finished difference Result 1319 states and 1803 transitions. [2019-10-15 01:15:44,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:44,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2019-10-15 01:15:44,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:44,253 INFO L225 Difference]: With dead ends: 1319 [2019-10-15 01:15:44,253 INFO L226 Difference]: Without dead ends: 1027 [2019-10-15 01:15:44,255 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 [2019-10-15 01:15:44,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-10-15 01:15:44,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1018. [2019-10-15 01:15:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1018 states. [2019-10-15 01:15:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1409 transitions. [2019-10-15 01:15:44,302 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1409 transitions. Word has length 174 [2019-10-15 01:15:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:44,303 INFO L462 AbstractCegarLoop]: Abstraction has 1018 states and 1409 transitions. [2019-10-15 01:15:44,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:44,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1409 transitions. [2019-10-15 01:15:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:15:44,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:44,307 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] [2019-10-15 01:15:44,308 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:44,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:44,308 INFO L82 PathProgramCache]: Analyzing trace with hash -285515108, now seen corresponding path program 1 times [2019-10-15 01:15:44,308 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:44,309 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733073393] [2019-10-15 01:15:44,309 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:44,309 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:44,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:44,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733073393] [2019-10-15 01:15:44,658 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:44,658 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-15 01:15:44,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767806259] [2019-10-15 01:15:44,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:15:44,659 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:44,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:15:44,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:15:44,660 INFO L87 Difference]: Start difference. First operand 1018 states and 1409 transitions. Second operand 18 states. [2019-10-15 01:15:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:45,153 INFO L93 Difference]: Finished difference Result 1701 states and 2320 transitions. [2019-10-15 01:15:45,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 01:15:45,153 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 175 [2019-10-15 01:15:45,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:45,161 INFO L225 Difference]: With dead ends: 1701 [2019-10-15 01:15:45,161 INFO L226 Difference]: Without dead ends: 1106 [2019-10-15 01:15:45,163 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:45,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2019-10-15 01:15:45,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1104. [2019-10-15 01:15:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2019-10-15 01:15:45,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1530 transitions. [2019-10-15 01:15:45,219 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1530 transitions. Word has length 175 [2019-10-15 01:15:45,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:45,219 INFO L462 AbstractCegarLoop]: Abstraction has 1104 states and 1530 transitions. [2019-10-15 01:15:45,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 01:15:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1530 transitions. [2019-10-15 01:15:45,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-15 01:15:45,224 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:45,224 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] [2019-10-15 01:15:45,224 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:45,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:45,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1555376384, now seen corresponding path program 1 times [2019-10-15 01:15:45,225 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:45,225 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081123709] [2019-10-15 01:15:45,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:45,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:45,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:45,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081123709] [2019-10-15 01:15:45,397 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:45,398 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:15:45,398 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252632765] [2019-10-15 01:15:45,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:15:45,399 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:45,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:15:45,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:15:45,400 INFO L87 Difference]: Start difference. First operand 1104 states and 1530 transitions. Second operand 8 states. [2019-10-15 01:15:46,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:46,607 INFO L93 Difference]: Finished difference Result 2327 states and 3151 transitions. [2019-10-15 01:15:46,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:46,607 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2019-10-15 01:15:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:46,618 INFO L225 Difference]: With dead ends: 2327 [2019-10-15 01:15:46,619 INFO L226 Difference]: Without dead ends: 1824 [2019-10-15 01:15:46,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:46,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2019-10-15 01:15:46,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1805. [2019-10-15 01:15:46,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2019-10-15 01:15:46,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2463 transitions. [2019-10-15 01:15:46,708 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2463 transitions. Word has length 184 [2019-10-15 01:15:46,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:46,709 INFO L462 AbstractCegarLoop]: Abstraction has 1805 states and 2463 transitions. [2019-10-15 01:15:46,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:15:46,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2463 transitions. [2019-10-15 01:15:46,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-15 01:15:46,715 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:46,715 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] [2019-10-15 01:15:46,715 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:46,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:46,716 INFO L82 PathProgramCache]: Analyzing trace with hash 266069784, now seen corresponding path program 1 times [2019-10-15 01:15:46,716 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:46,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538281047] [2019-10-15 01:15:46,716 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:46,717 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:46,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:47,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538281047] [2019-10-15 01:15:47,027 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:47,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-15 01:15:47,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45402941] [2019-10-15 01:15:47,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-15 01:15:47,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:47,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-15 01:15:47,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:15:47,029 INFO L87 Difference]: Start difference. First operand 1805 states and 2463 transitions. Second operand 17 states. [2019-10-15 01:15:47,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:47,898 INFO L93 Difference]: Finished difference Result 2470 states and 3341 transitions. [2019-10-15 01:15:47,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 01:15:47,898 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 185 [2019-10-15 01:15:47,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:47,920 INFO L225 Difference]: With dead ends: 2470 [2019-10-15 01:15:47,921 INFO L226 Difference]: Without dead ends: 1804 [2019-10-15 01:15:47,926 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:15:47,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2019-10-15 01:15:48,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1803. [2019-10-15 01:15:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1803 states. [2019-10-15 01:15:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2458 transitions. [2019-10-15 01:15:48,034 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2458 transitions. Word has length 185 [2019-10-15 01:15:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:48,035 INFO L462 AbstractCegarLoop]: Abstraction has 1803 states and 2458 transitions. [2019-10-15 01:15:48,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-15 01:15:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2458 transitions. [2019-10-15 01:15:48,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-15 01:15:48,042 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:48,042 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] [2019-10-15 01:15:48,043 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:48,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:48,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2118439478, now seen corresponding path program 2 times [2019-10-15 01:15:48,043 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:48,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272340051] [2019-10-15 01:15:48,044 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:48,044 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:48,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:48,253 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272340051] [2019-10-15 01:15:48,253 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404703196] [2019-10-15 01:15:48,254 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 [2019-10-15 01:15:48,726 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:48,726 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:48,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 2158 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:15:48,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:49,073 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:49,883 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:49,883 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-15 01:15:49,884 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076053389] [2019-10-15 01:15:49,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:49,885 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:49,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:49,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:49,885 INFO L87 Difference]: Start difference. First operand 1803 states and 2458 transitions. Second operand 14 states. [2019-10-15 01:15:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:52,373 INFO L93 Difference]: Finished difference Result 5381 states and 7385 transitions. [2019-10-15 01:15:52,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:52,374 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 185 [2019-10-15 01:15:52,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:52,410 INFO L225 Difference]: With dead ends: 5381 [2019-10-15 01:15:52,410 INFO L226 Difference]: Without dead ends: 5378 [2019-10-15 01:15:52,415 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 364 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:15:52,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2019-10-15 01:15:52,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 3961. [2019-10-15 01:15:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3961 states. [2019-10-15 01:15:52,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3961 states to 3961 states and 5520 transitions. [2019-10-15 01:15:52,706 INFO L78 Accepts]: Start accepts. Automaton has 3961 states and 5520 transitions. Word has length 185 [2019-10-15 01:15:52,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:52,708 INFO L462 AbstractCegarLoop]: Abstraction has 3961 states and 5520 transitions. [2019-10-15 01:15:52,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:52,709 INFO L276 IsEmpty]: Start isEmpty. Operand 3961 states and 5520 transitions. [2019-10-15 01:15:52,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-15 01:15:52,724 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:52,725 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] [2019-10-15 01:15:52,935 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:52,935 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:52,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:52,936 INFO L82 PathProgramCache]: Analyzing trace with hash 416767069, now seen corresponding path program 1 times [2019-10-15 01:15:52,936 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:52,937 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952919462] [2019-10-15 01:15:52,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:52,937 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:52,938 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:15:53,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952919462] [2019-10-15 01:15:53,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988971925] [2019-10-15 01:15:53,229 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 [2019-10-15 01:15:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:53,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 2780 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:54,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:15:54,176 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:54,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:54,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:54,863 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 01:15:54,967 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:54,968 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-10-15 01:15:54,968 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787790461] [2019-10-15 01:15:54,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:54,969 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:54,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:54,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:15:54,969 INFO L87 Difference]: Start difference. First operand 3961 states and 5520 transitions. Second operand 9 states. [2019-10-15 01:15:56,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:56,734 INFO L93 Difference]: Finished difference Result 7896 states and 11014 transitions. [2019-10-15 01:15:56,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:56,735 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-10-15 01:15:56,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:56,764 INFO L225 Difference]: With dead ends: 7896 [2019-10-15 01:15:56,765 INFO L226 Difference]: Without dead ends: 3979 [2019-10-15 01:15:56,785 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 [2019-10-15 01:15:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2019-10-15 01:15:56,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3979. [2019-10-15 01:15:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3979 states. [2019-10-15 01:15:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5541 transitions. [2019-10-15 01:15:57,010 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5541 transitions. Word has length 187 [2019-10-15 01:15:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:57,010 INFO L462 AbstractCegarLoop]: Abstraction has 3979 states and 5541 transitions. [2019-10-15 01:15:57,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5541 transitions. [2019-10-15 01:15:57,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-15 01:15:57,027 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:57,028 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] [2019-10-15 01:15:57,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:57,235 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:57,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:57,236 INFO L82 PathProgramCache]: Analyzing trace with hash 600188279, now seen corresponding path program 1 times [2019-10-15 01:15:57,236 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:57,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106905877] [2019-10-15 01:15:57,237 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:57,237 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:57,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:15:57,450 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106905877] [2019-10-15 01:15:57,450 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899120419] [2019-10-15 01:15:57,450 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 [2019-10-15 01:15:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:58,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 2781 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:58,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:15:58,254 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:58,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:58,693 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:15:58,742 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:58,742 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-10-15 01:15:58,742 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288937851] [2019-10-15 01:15:58,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:58,743 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:58,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:58,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:15:58,744 INFO L87 Difference]: Start difference. First operand 3979 states and 5541 transitions. Second operand 7 states. [2019-10-15 01:16:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:00,033 INFO L93 Difference]: Finished difference Result 7866 states and 10975 transitions. [2019-10-15 01:16:00,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:16:00,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2019-10-15 01:16:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:00,058 INFO L225 Difference]: With dead ends: 7866 [2019-10-15 01:16:00,059 INFO L226 Difference]: Without dead ends: 3979 [2019-10-15 01:16:00,073 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 365 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:16:00,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3979 states. [2019-10-15 01:16:00,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3979 to 3979. [2019-10-15 01:16:00,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3979 states. [2019-10-15 01:16:00,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5527 transitions. [2019-10-15 01:16:00,268 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5527 transitions. Word has length 188 [2019-10-15 01:16:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:00,268 INFO L462 AbstractCegarLoop]: Abstraction has 3979 states and 5527 transitions. [2019-10-15 01:16:00,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:16:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5527 transitions. [2019-10-15 01:16:00,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 01:16:00,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:00,282 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] [2019-10-15 01:16:00,493 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:00,494 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:00,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:00,494 INFO L82 PathProgramCache]: Analyzing trace with hash -418340196, now seen corresponding path program 1 times [2019-10-15 01:16:00,495 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:00,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291228066] [2019-10-15 01:16:00,495 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:00,496 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:00,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:16:00,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291228066] [2019-10-15 01:16:00,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693554775] [2019-10-15 01:16:00,629 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 [2019-10-15 01:16:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:01,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:16:01,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:16:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:16:01,508 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:16:01,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:01,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:16:01,858 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:16:01,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:16:01,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384458339] [2019-10-15 01:16:01,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:16:01,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:01,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:16:01,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:16:01,860 INFO L87 Difference]: Start difference. First operand 3979 states and 5527 transitions. Second operand 7 states. [2019-10-15 01:16:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:03,546 INFO L93 Difference]: Finished difference Result 7532 states and 10400 transitions. [2019-10-15 01:16:03,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:16:03,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2019-10-15 01:16:03,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:03,569 INFO L225 Difference]: With dead ends: 7532 [2019-10-15 01:16:03,569 INFO L226 Difference]: Without dead ends: 3991 [2019-10-15 01:16:03,581 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 [2019-10-15 01:16:03,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3991 states. [2019-10-15 01:16:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3991 to 3979. [2019-10-15 01:16:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3979 states. [2019-10-15 01:16:03,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5525 transitions. [2019-10-15 01:16:03,772 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5525 transitions. Word has length 189 [2019-10-15 01:16:03,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:03,772 INFO L462 AbstractCegarLoop]: Abstraction has 3979 states and 5525 transitions. [2019-10-15 01:16:03,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:16:03,773 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5525 transitions. [2019-10-15 01:16:03,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-15 01:16:03,786 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:03,787 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:16:04,002 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:04,002 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:04,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:04,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1166663193, now seen corresponding path program 1 times [2019-10-15 01:16:04,003 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:04,003 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437840780] [2019-10-15 01:16:04,003 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:04,003 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:04,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:04,237 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:16:04,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437840780] [2019-10-15 01:16:04,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328385625] [2019-10-15 01:16:04,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:04,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 2774 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:16:04,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:16:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:16:05,012 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:16:05,314 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:16:05,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:05,452 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:16:05,563 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:16:05,563 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:16:05,563 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768118324] [2019-10-15 01:16:05,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:16:05,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:05,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:16:05,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:16:05,565 INFO L87 Difference]: Start difference. First operand 3979 states and 5525 transitions. Second operand 16 states.