/usr/bin/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_spec9_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:57:13,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:57:13,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:57:13,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:57:13,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:57:13,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:57:13,754 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:57:13,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:57:13,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:57:13,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:57:13,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:57:13,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:57:13,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:57:13,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:57:13,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:57:13,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:57:13,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:57:13,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:57:13,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:57:13,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:57:13,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:57:13,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:57:13,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:57:13,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:57:13,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:57:13,783 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:57:13,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:57:13,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:57:13,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:57:13,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:57:13,788 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:57:13,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:57:13,792 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:57:13,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:57:13,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:57:13,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:57:13,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:57:13,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:57:13,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:57:13,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:57:13,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:57:13,803 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 [2019-11-07 00:57:13,822 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:57:13,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:57:13,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:57:13,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:57:13,824 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:57:13,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:57:13,824 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:57:13,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:57:13,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:57:13,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:57:13,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:57:13,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:57:13,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:57:13,825 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:57:13,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:57:13,826 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:57:13,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:57:13,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:57:13,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:57:13,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:57:13,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:57:13,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:57:13,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:57:13,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:57:13,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:57:13,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:57:13,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:57:13,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:57:13,829 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 [2019-11-07 00:57:14,137 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:57:14,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:57:14,164 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:57:14,166 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:57:14,166 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:57:14,167 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product34.cil.c [2019-11-07 00:57:14,244 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762efdd21/a65e907ce0854b1b9aa85020b55c1997/FLAG6254a4b96 [2019-11-07 00:57:14,946 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:57:14,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product34.cil.c [2019-11-07 00:57:14,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762efdd21/a65e907ce0854b1b9aa85020b55c1997/FLAG6254a4b96 [2019-11-07 00:57:15,086 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/762efdd21/a65e907ce0854b1b9aa85020b55c1997 [2019-11-07 00:57:15,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:57:15,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:57:15,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:57:15,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:57:15,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:57:15,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:15" (1/1) ... [2019-11-07 00:57:15,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a65a681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:15, skipping insertion in model container [2019-11-07 00:57:15,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:15" (1/1) ... [2019-11-07 00:57:15,115 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:57:15,200 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:57:15,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:57:16,004 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:57:16,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:57:16,290 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:57:16,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:16 WrapperNode [2019-11-07 00:57:16,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:57:16,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:57:16,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:57:16,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:57:16,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:16" (1/1) ... [2019-11-07 00:57:16,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:16" (1/1) ... [2019-11-07 00:57:16,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:16" (1/1) ... [2019-11-07 00:57:16,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:16" (1/1) ... [2019-11-07 00:57:16,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:16" (1/1) ... [2019-11-07 00:57:16,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:16" (1/1) ... [2019-11-07 00:57:16,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:16" (1/1) ... [2019-11-07 00:57:16,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:57:16,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:57:16,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:57:16,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:57:16,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:16" (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 [2019-11-07 00:57:16,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:57:16,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:57:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:57:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:57:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-11-07 00:57:16,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-11-07 00:57:16,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:57:16,617 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:57:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:57:16,618 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:57:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:57:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:57:16,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:57:16,620 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:57:16,620 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:57:16,620 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:57:16,623 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:57:16,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:57:16,623 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:57:16,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:57:16,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:57:16,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:57:16,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:57:16,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:57:16,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:57:16,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:57:16,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:57:16,625 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:57:16,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:57:16,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:57:16,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:57:16,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:57:16,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:57:16,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:57:16,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:57:16,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:57:16,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:57:16,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:57:16,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:57:16,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:57:16,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:57:16,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:57:16,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:57:16,628 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:57:16,628 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:57:16,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:57:16,628 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:57:16,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:57:16,628 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:57:16,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:57:16,629 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:57:16,629 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:57:16,629 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:57:16,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:57:16,629 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:57:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:57:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:57:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:57:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:57:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:57:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:57:16,630 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:57:16,631 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:57:16,631 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:57:16,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:57:16,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:57:16,632 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:57:16,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:57:16,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:57:16,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:57:16,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:57:16,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:57:16,633 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:57:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:57:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:57:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:57:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:57:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:57:16,635 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:57:16,635 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:57:16,635 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:57:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:57:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:57:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:57:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:57:16,637 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:57:16,637 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:57:16,638 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:57:16,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:57:16,639 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:57:16,639 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:57:16,639 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:57:16,639 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:57:16,639 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:57:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:57:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:57:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:57:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:57:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:57:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:57:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:57:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:57:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:57:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:57:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:57:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:57:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:57:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:57:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:57:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:57:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:57:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:57:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:57:16,642 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:57:16,643 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:57:16,643 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:57:16,643 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:57:16,643 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:57:16,644 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:57:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:57:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:57:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:57:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:57:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:57:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:57:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:57:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:57:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:57:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:57:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:57:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:57:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:57:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:57:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:57:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:57:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:57:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-11-07 00:57:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:57:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-11-07 00:57:16,654 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:57:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:57:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:57:16,655 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:57:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:57:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:57:16,664 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:57:16,665 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:57:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:57:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:57:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:57:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:57:16,666 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:57:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:57:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:57:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:57:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:57:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:57:16,667 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:57:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:57:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:57:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:57:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:57:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:57:16,668 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:57:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:57:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:57:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:57:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:57:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:57:16,669 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:57:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:57:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:57:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:57:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:57:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:57:16,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:57:16,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:57:16,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:57:16,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:57:16,671 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:57:16,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:57:16,671 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:57:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:57:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:57:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:57:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:57:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:57:16,672 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:57:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:57:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:57:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:57:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:57:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:57:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:57:16,673 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:57:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:57:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:57:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:57:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:57:16,674 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:57:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:57:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:57:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:57:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:57:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:57:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:57:16,675 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:57:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:57:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:57:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:57:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:57:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:57:16,676 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:57:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:57:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:57:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:57:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:57:16,677 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:57:16,678 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:57:16,678 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:57:16,678 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:57:16,678 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:57:16,678 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:57:16,678 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:57:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:57:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:57:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:57:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:57:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:57:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:57:16,679 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:57:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:57:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:57:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:57:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:57:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:57:16,680 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:57:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:57:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:57:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:57:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:57:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:57:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:57:16,681 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:57:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:57:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:57:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:57:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:57:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:57:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:57:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:57:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:57:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:57:19,081 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:57:19,081 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:57:19,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:19 BoogieIcfgContainer [2019-11-07 00:57:19,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:57:19,084 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:57:19,084 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:57:19,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:57:19,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:57:15" (1/3) ... [2019-11-07 00:57:19,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205410df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:19, skipping insertion in model container [2019-11-07 00:57:19,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:16" (2/3) ... [2019-11-07 00:57:19,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@205410df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:19, skipping insertion in model container [2019-11-07 00:57:19,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:19" (3/3) ... [2019-11-07 00:57:19,094 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product34.cil.c [2019-11-07 00:57:19,105 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:57:19,114 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:57:19,127 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:57:19,161 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:57:19,161 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:57:19,161 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:57:19,161 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:57:19,162 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:57:19,162 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:57:19,162 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:57:19,162 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:57:19,195 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states. [2019-11-07 00:57:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 00:57:19,221 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:19,222 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:19,226 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:19,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1909664876, now seen corresponding path program 1 times [2019-11-07 00:57:19,243 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:19,243 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349714336] [2019-11-07 00:57:19,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:57:19,891 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349714336] [2019-11-07 00:57:19,892 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:19,892 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:57:19,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105952274] [2019-11-07 00:57:19,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:57:19,901 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:19,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:57:19,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:57:19,920 INFO L87 Difference]: Start difference. First operand 655 states. Second operand 2 states. [2019-11-07 00:57:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:20,020 INFO L93 Difference]: Finished difference Result 996 states and 1339 transitions. [2019-11-07 00:57:20,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:57:20,021 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 167 [2019-11-07 00:57:20,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:20,045 INFO L225 Difference]: With dead ends: 996 [2019-11-07 00:57:20,045 INFO L226 Difference]: Without dead ends: 626 [2019-11-07 00:57:20,059 INFO L630 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 [2019-11-07 00:57:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-11-07 00:57:20,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 626. [2019-11-07 00:57:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-11-07 00:57:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 848 transitions. [2019-11-07 00:57:20,182 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 848 transitions. Word has length 167 [2019-11-07 00:57:20,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:20,184 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 848 transitions. [2019-11-07 00:57:20,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:57:20,184 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 848 transitions. [2019-11-07 00:57:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-07 00:57:20,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:20,190 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:20,190 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:20,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1779863714, now seen corresponding path program 1 times [2019-11-07 00:57:20,191 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:20,191 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561686619] [2019-11-07 00:57:20,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:57:20,538 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561686619] [2019-11-07 00:57:20,539 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:20,539 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:57:20,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139452132] [2019-11-07 00:57:20,542 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:57:20,543 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:20,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:57:20,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:20,543 INFO L87 Difference]: Start difference. First operand 626 states and 848 transitions. Second operand 3 states. [2019-11-07 00:57:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:20,643 INFO L93 Difference]: Finished difference Result 979 states and 1304 transitions. [2019-11-07 00:57:20,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:57:20,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-11-07 00:57:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:20,656 INFO L225 Difference]: With dead ends: 979 [2019-11-07 00:57:20,658 INFO L226 Difference]: Without dead ends: 629 [2019-11-07 00:57:20,661 INFO L630 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 [2019-11-07 00:57:20,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2019-11-07 00:57:20,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2019-11-07 00:57:20,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-11-07 00:57:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 850 transitions. [2019-11-07 00:57:20,721 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 850 transitions. Word has length 168 [2019-11-07 00:57:20,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:20,722 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 850 transitions. [2019-11-07 00:57:20,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:57:20,722 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 850 transitions. [2019-11-07 00:57:20,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 00:57:20,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:20,731 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:20,732 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:20,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:20,733 INFO L82 PathProgramCache]: Analyzing trace with hash -562274134, now seen corresponding path program 1 times [2019-11-07 00:57:20,733 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:20,733 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756353873] [2019-11-07 00:57:20,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:20,994 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:57:20,994 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756353873] [2019-11-07 00:57:20,995 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:20,995 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:57:20,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685298902] [2019-11-07 00:57:20,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:57:20,999 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:20,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:57:21,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:21,000 INFO L87 Difference]: Start difference. First operand 628 states and 850 transitions. Second operand 3 states. [2019-11-07 00:57:21,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:21,044 INFO L93 Difference]: Finished difference Result 1234 states and 1701 transitions. [2019-11-07 00:57:21,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:57:21,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-11-07 00:57:21,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:21,050 INFO L225 Difference]: With dead ends: 1234 [2019-11-07 00:57:21,050 INFO L226 Difference]: Without dead ends: 671 [2019-11-07 00:57:21,053 INFO L630 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 [2019-11-07 00:57:21,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2019-11-07 00:57:21,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 670. [2019-11-07 00:57:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 670 states. [2019-11-07 00:57:21,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 922 transitions. [2019-11-07 00:57:21,082 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 922 transitions. Word has length 174 [2019-11-07 00:57:21,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:21,083 INFO L462 AbstractCegarLoop]: Abstraction has 670 states and 922 transitions. [2019-11-07 00:57:21,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:57:21,084 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 922 transitions. [2019-11-07 00:57:21,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-11-07 00:57:21,088 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:21,088 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:21,088 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:21,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1803150498, now seen corresponding path program 1 times [2019-11-07 00:57:21,089 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:21,089 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496444079] [2019-11-07 00:57:21,089 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:57:21,397 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496444079] [2019-11-07 00:57:21,398 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:21,398 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:57:21,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776004621] [2019-11-07 00:57:21,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:57:21,399 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:21,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:57:21,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:21,400 INFO L87 Difference]: Start difference. First operand 670 states and 922 transitions. Second operand 3 states. [2019-11-07 00:57:21,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:21,440 INFO L93 Difference]: Finished difference Result 1148 states and 1566 transitions. [2019-11-07 00:57:21,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:57:21,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-11-07 00:57:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:21,446 INFO L225 Difference]: With dead ends: 1148 [2019-11-07 00:57:21,447 INFO L226 Difference]: Without dead ends: 811 [2019-11-07 00:57:21,448 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:21,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2019-11-07 00:57:21,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 810. [2019-11-07 00:57:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2019-11-07 00:57:21,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1119 transitions. [2019-11-07 00:57:21,486 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1119 transitions. Word has length 175 [2019-11-07 00:57:21,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:21,487 INFO L462 AbstractCegarLoop]: Abstraction has 810 states and 1119 transitions. [2019-11-07 00:57:21,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:57:21,487 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1119 transitions. [2019-11-07 00:57:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-11-07 00:57:21,494 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:21,495 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:21,495 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:21,496 INFO L82 PathProgramCache]: Analyzing trace with hash -753828039, now seen corresponding path program 1 times [2019-11-07 00:57:21,496 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:21,496 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415697642] [2019-11-07 00:57:21,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-11-07 00:57:21,963 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415697642] [2019-11-07 00:57:21,963 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:21,963 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:57:21,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222543107] [2019-11-07 00:57:21,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:57:21,965 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:21,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:57:21,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:57:21,965 INFO L87 Difference]: Start difference. First operand 810 states and 1119 transitions. Second operand 6 states. [2019-11-07 00:57:22,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:22,820 INFO L93 Difference]: Finished difference Result 2010 states and 2769 transitions. [2019-11-07 00:57:22,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:57:22,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 320 [2019-11-07 00:57:22,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:22,832 INFO L225 Difference]: With dead ends: 2010 [2019-11-07 00:57:22,832 INFO L226 Difference]: Without dead ends: 1571 [2019-11-07 00:57:22,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:57:22,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2019-11-07 00:57:22,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1560. [2019-11-07 00:57:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1560 states. [2019-11-07 00:57:22,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1560 states to 1560 states and 2174 transitions. [2019-11-07 00:57:22,923 INFO L78 Accepts]: Start accepts. Automaton has 1560 states and 2174 transitions. Word has length 320 [2019-11-07 00:57:22,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:22,925 INFO L462 AbstractCegarLoop]: Abstraction has 1560 states and 2174 transitions. [2019-11-07 00:57:22,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:57:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1560 states and 2174 transitions. [2019-11-07 00:57:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2019-11-07 00:57:22,934 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:22,934 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:22,935 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:22,935 INFO L82 PathProgramCache]: Analyzing trace with hash -536958527, now seen corresponding path program 1 times [2019-11-07 00:57:22,935 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:22,935 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809506874] [2019-11-07 00:57:22,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-11-07 00:57:23,359 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809506874] [2019-11-07 00:57:23,361 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:23,361 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 00:57:23,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009798693] [2019-11-07 00:57:23,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:57:23,363 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:23,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:57:23,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:57:23,364 INFO L87 Difference]: Start difference. First operand 1560 states and 2174 transitions. Second operand 11 states. [2019-11-07 00:57:23,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:23,975 INFO L93 Difference]: Finished difference Result 2435 states and 3327 transitions. [2019-11-07 00:57:23,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:57:23,976 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 321 [2019-11-07 00:57:23,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:23,991 INFO L225 Difference]: With dead ends: 2435 [2019-11-07 00:57:23,992 INFO L226 Difference]: Without dead ends: 1534 [2019-11-07 00:57:23,996 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:57:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2019-11-07 00:57:24,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1530. [2019-11-07 00:57:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1530 states. [2019-11-07 00:57:24,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2123 transitions. [2019-11-07 00:57:24,070 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2123 transitions. Word has length 321 [2019-11-07 00:57:24,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:24,070 INFO L462 AbstractCegarLoop]: Abstraction has 1530 states and 2123 transitions. [2019-11-07 00:57:24,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:57:24,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2123 transitions. [2019-11-07 00:57:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-11-07 00:57:24,080 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:24,081 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:24,081 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:24,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:24,081 INFO L82 PathProgramCache]: Analyzing trace with hash -237439355, now seen corresponding path program 1 times [2019-11-07 00:57:24,081 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:24,082 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936270267] [2019-11-07 00:57:24,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 00:57:24,629 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936270267] [2019-11-07 00:57:24,630 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483745965] [2019-11-07 00:57:24,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:25,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 3856 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:57:25,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-11-07 00:57:25,870 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:26,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:57:26,768 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:26,917 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-07 00:57:27,203 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:57:27,204 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-11-07 00:57:27,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551512377] [2019-11-07 00:57:27,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:57:27,208 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:27,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:57:27,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:57:27,210 INFO L87 Difference]: Start difference. First operand 1530 states and 2123 transitions. Second operand 9 states. [2019-11-07 00:57:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:29,783 INFO L93 Difference]: Finished difference Result 3038 states and 4226 transitions. [2019-11-07 00:57:29,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:57:29,783 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2019-11-07 00:57:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:29,795 INFO L225 Difference]: With dead ends: 3038 [2019-11-07 00:57:29,795 INFO L226 Difference]: Without dead ends: 1544 [2019-11-07 00:57:29,800 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 647 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:57:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2019-11-07 00:57:29,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 1544. [2019-11-07 00:57:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2019-11-07 00:57:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 2141 transitions. [2019-11-07 00:57:29,886 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 2141 transitions. Word has length 329 [2019-11-07 00:57:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:29,886 INFO L462 AbstractCegarLoop]: Abstraction has 1544 states and 2141 transitions. [2019-11-07 00:57:29,887 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:57:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 2141 transitions. [2019-11-07 00:57:29,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2019-11-07 00:57:29,896 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:29,896 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:30,103 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:30,104 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:30,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:30,104 INFO L82 PathProgramCache]: Analyzing trace with hash -245007680, now seen corresponding path program 1 times [2019-11-07 00:57:30,104 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:30,105 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873856416] [2019-11-07 00:57:30,105 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 00:57:30,956 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873856416] [2019-11-07 00:57:30,956 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261725983] [2019-11-07 00:57:30,957 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 [2019-11-07 00:57:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:31,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 3857 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:57:31,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-11-07 00:57:32,006 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:32,743 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:32,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-07 00:57:32,946 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:57:32,946 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-11-07 00:57:32,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216362134] [2019-11-07 00:57:32,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:57:32,947 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:32,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:57:32,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:57:32,948 INFO L87 Difference]: Start difference. First operand 1544 states and 2141 transitions. Second operand 7 states. [2019-11-07 00:57:34,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:34,467 INFO L93 Difference]: Finished difference Result 3041 states and 4235 transitions. [2019-11-07 00:57:34,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:57:34,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2019-11-07 00:57:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:34,480 INFO L225 Difference]: With dead ends: 3041 [2019-11-07 00:57:34,481 INFO L226 Difference]: Without dead ends: 1548 [2019-11-07 00:57:34,487 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 654 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:57:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2019-11-07 00:57:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1548. [2019-11-07 00:57:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2019-11-07 00:57:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2146 transitions. [2019-11-07 00:57:34,584 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2146 transitions. Word has length 330 [2019-11-07 00:57:34,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:34,587 INFO L462 AbstractCegarLoop]: Abstraction has 1548 states and 2146 transitions. [2019-11-07 00:57:34,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:57:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2146 transitions. [2019-11-07 00:57:34,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-11-07 00:57:34,597 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:34,598 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:34,815 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:34,816 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:34,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:34,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1118924247, now seen corresponding path program 1 times [2019-11-07 00:57:34,816 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:34,817 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781999559] [2019-11-07 00:57:34,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 00:57:35,491 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781999559] [2019-11-07 00:57:35,491 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730253202] [2019-11-07 00:57:35,491 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 [2019-11-07 00:57:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:36,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 3858 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:57:36,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:36,783 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-11-07 00:57:36,783 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:37,494 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:57:37,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:37,739 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-07 00:57:37,914 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:57:37,914 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-11-07 00:57:37,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004774816] [2019-11-07 00:57:37,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:57:37,916 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:37,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:57:37,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-11-07 00:57:37,917 INFO L87 Difference]: Start difference. First operand 1548 states and 2146 transitions. Second operand 16 states. [2019-11-07 00:57:40,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:40,499 INFO L93 Difference]: Finished difference Result 3047 states and 4234 transitions. [2019-11-07 00:57:40,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:57:40,500 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2019-11-07 00:57:40,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:40,509 INFO L225 Difference]: With dead ends: 3047 [2019-11-07 00:57:40,510 INFO L226 Difference]: Without dead ends: 1560 [2019-11-07 00:57:40,516 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 651 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-11-07 00:57:40,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2019-11-07 00:57:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1558. [2019-11-07 00:57:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-11-07 00:57:40,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2157 transitions. [2019-11-07 00:57:40,581 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2157 transitions. Word has length 331 [2019-11-07 00:57:40,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:40,581 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2157 transitions. [2019-11-07 00:57:40,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:57:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2157 transitions. [2019-11-07 00:57:40,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-11-07 00:57:40,588 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:40,589 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:40,799 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:40,799 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:40,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1698160328, now seen corresponding path program 2 times [2019-11-07 00:57:40,800 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:40,800 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415129109] [2019-11-07 00:57:40,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-11-07 00:57:41,894 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415129109] [2019-11-07 00:57:41,894 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744693825] [2019-11-07 00:57:41,894 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:42,625 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:57:42,625 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:57:42,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:57:42,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:42,844 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-11-07 00:57:42,844 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:43,479 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:43,601 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-11-07 00:57:43,707 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:57:43,707 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-11-07 00:57:43,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140645297] [2019-11-07 00:57:43,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:57:43,709 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:43,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:57:43,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:57:43,711 INFO L87 Difference]: Start difference. First operand 1558 states and 2157 transitions. Second operand 12 states. [2019-11-07 00:57:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:45,317 INFO L93 Difference]: Finished difference Result 3038 states and 4222 transitions. [2019-11-07 00:57:45,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:57:45,318 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 332 [2019-11-07 00:57:45,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:45,325 INFO L225 Difference]: With dead ends: 3038 [2019-11-07 00:57:45,325 INFO L226 Difference]: Without dead ends: 1560 [2019-11-07 00:57:45,330 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:57:45,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2019-11-07 00:57:45,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1558. [2019-11-07 00:57:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2019-11-07 00:57:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2156 transitions. [2019-11-07 00:57:45,398 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2156 transitions. Word has length 332 [2019-11-07 00:57:45,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:45,398 INFO L462 AbstractCegarLoop]: Abstraction has 1558 states and 2156 transitions. [2019-11-07 00:57:45,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:57:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2156 transitions. [2019-11-07 00:57:45,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2019-11-07 00:57:45,408 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:45,408 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:45,627 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:45,627 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:45,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:45,628 INFO L82 PathProgramCache]: Analyzing trace with hash -653196719, now seen corresponding path program 3 times [2019-11-07 00:57:45,628 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:45,628 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307737676] [2019-11-07 00:57:45,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat