/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_spec27_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:50:07,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:50:07,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:50:07,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:50:07,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:50:07,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:50:07,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:50:07,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:50:07,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:50:07,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:50:07,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:50:07,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:50:07,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:50:07,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:50:07,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:50:07,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:50:07,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:50:07,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:50:07,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:50:07,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:50:07,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:50:07,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:50:07,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:50:07,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:50:07,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:50:07,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:50:07,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:50:07,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:50:07,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:50:07,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:50:07,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:50:07,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:50:07,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:50:07,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:50:07,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:50:07,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:50:07,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:50:07,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:50:07,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:50:07,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:50:07,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:50:07,973 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 00:50:08,001 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:50:08,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:50:08,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:50:08,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:50:08,004 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:50:08,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:50:08,004 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:50:08,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:50:08,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:50:08,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:50:08,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:50:08,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:50:08,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:50:08,009 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:50:08,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:50:08,009 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:50:08,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:50:08,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:50:08,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:50:08,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:50:08,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:50:08,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:50:08,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:50:08,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:50:08,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:50:08,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:50:08,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:50:08,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:50:08,014 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 00:50:08,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:50:08,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:50:08,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:50:08,316 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:50:08,316 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:50:08,317 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c [2019-11-07 00:50:08,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/041b70ec0/b4a86840792a44e1ada80181449c66e6/FLAG78d247207 [2019-11-07 00:50:08,998 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:50:08,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c [2019-11-07 00:50:09,029 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/041b70ec0/b4a86840792a44e1ada80181449c66e6/FLAG78d247207 [2019-11-07 00:50:09,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/041b70ec0/b4a86840792a44e1ada80181449c66e6 [2019-11-07 00:50:09,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:50:09,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:50:09,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:50:09,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:50:09,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:50:09,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:09" (1/1) ... [2019-11-07 00:50:09,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22830b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:09, skipping insertion in model container [2019-11-07 00:50:09,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:09" (1/1) ... [2019-11-07 00:50:09,230 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:50:09,320 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:50:10,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:50:10,164 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:50:10,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:50:10,489 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:50:10,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:10 WrapperNode [2019-11-07 00:50:10,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:50:10,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:50:10,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:50:10,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:50:10,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:10" (1/1) ... [2019-11-07 00:50:10,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:10" (1/1) ... [2019-11-07 00:50:10,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:10" (1/1) ... [2019-11-07 00:50:10,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:10" (1/1) ... [2019-11-07 00:50:10,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:10" (1/1) ... [2019-11-07 00:50:10,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:10" (1/1) ... [2019-11-07 00:50:10,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:10" (1/1) ... [2019-11-07 00:50:10,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:50:10,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:50:10,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:50:10,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:50:10,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:10" (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 00:50:10,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:50:10,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:50:10,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:50:10,746 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:50:10,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:50:10,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:50:10,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:50:10,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:50:10,747 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:50:10,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:50:10,748 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:50:10,748 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:50:10,748 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:50:10,749 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:50:10,749 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:50:10,749 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:50:10,751 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:50:10,751 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:50:10,751 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:50:10,751 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:50:10,751 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:50:10,752 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:50:10,752 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:50:10,752 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:50:10,752 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:50:10,752 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:50:10,752 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:50:10,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:50:10,753 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:50:10,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:50:10,753 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:50:10,753 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:50:10,753 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:50:10,753 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:50:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:50:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:50:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:50:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:50:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:50:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:50:10,754 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:50:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:50:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:50:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:50:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:50:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:50:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:50:10,755 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:50:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:50:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:50:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:50:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:50:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:50:10,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:50:10,757 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:50:10,757 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:50:10,757 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:50:10,757 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:50:10,757 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:50:10,757 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:50:10,757 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:50:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:50:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:50:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:50:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:50:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:50:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:50:10,758 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:50:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:50:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:50:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:50:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:50:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:50:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:50:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:50:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:50:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:50:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:50:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:50:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:50:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:50:10,760 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:50:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:50:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:50:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:50:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:50:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:50:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:50:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:50:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:50:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:50:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:50:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:50:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:50:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:50:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:50:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:50:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:50:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:50:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:50:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:50:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:50:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:50:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:50:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:50:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:50:10,764 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:50:10,765 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:50:10,765 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:50:10,765 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:50:10,765 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:50:10,765 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:50:10,765 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:50:10,765 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:50:10,766 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:50:10,766 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:50:10,766 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:50:10,766 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:50:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:50:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:50:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:50:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:50:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:50:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:50:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:50:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:50:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:50:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:50:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:50:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:50:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:50:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:50:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:50:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:50:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:50:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:50:10,770 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:50:10,770 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:50:10,770 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:50:10,770 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:50:10,770 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:50:10,771 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:50:10,771 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:50:10,771 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:50:10,771 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:50:10,771 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:50:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:50:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:50:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:50:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:50:10,772 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:50:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:50:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:50:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:50:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:50:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:50:10,773 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:50:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:50:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:50:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:50:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:50:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:50:10,774 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:50:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:50:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:50:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:50:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:50:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:50:10,775 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:50:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:50:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:50:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:50:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:50:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:50:10,776 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:50:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:50:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:50:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:50:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:50:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:50:10,777 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:50:10,778 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:50:10,778 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:50:10,778 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:50:10,778 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:50:10,778 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:50:10,778 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:50:10,779 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:50:10,779 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:50:10,779 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:50:10,779 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:50:10,779 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:50:10,779 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:50:10,780 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:50:10,780 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:50:10,780 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:50:10,780 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:50:10,780 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:50:10,781 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:50:10,781 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:50:10,781 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:50:10,781 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:50:10,781 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:50:10,781 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:50:10,781 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:50:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:50:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:50:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:50:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:50:10,782 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:50:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:50:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:50:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:50:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:50:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:50:10,783 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:50:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:50:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:50:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:50:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:50:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:50:10,784 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:50:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:50:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:50:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:50:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:50:10,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:50:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:50:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:50:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:50:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:50:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:50:10,786 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:50:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:50:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:50:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:50:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:50:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:50:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:50:10,787 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:50:10,788 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:50:10,788 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:50:10,788 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:50:10,788 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:50:10,788 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:50:10,788 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:50:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:50:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:50:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:50:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:50:10,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:50:13,228 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:50:13,230 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:50:13,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:50:13 BoogieIcfgContainer [2019-11-07 00:50:13,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:50:13,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:50:13,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:50:13,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:50:13,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:50:09" (1/3) ... [2019-11-07 00:50:13,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d28b80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:50:13, skipping insertion in model container [2019-11-07 00:50:13,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:10" (2/3) ... [2019-11-07 00:50:13,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d28b80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:50:13, skipping insertion in model container [2019-11-07 00:50:13,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:50:13" (3/3) ... [2019-11-07 00:50:13,241 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product34.cil.c [2019-11-07 00:50:13,252 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:50:13,266 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:50:13,279 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:50:13,323 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:50:13,324 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:50:13,324 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:50:13,325 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:50:13,325 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:50:13,333 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:50:13,333 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:50:13,334 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:50:13,385 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states. [2019-11-07 00:50:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-11-07 00:50:13,430 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:13,436 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:13,439 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:13,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:13,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1025683934, now seen corresponding path program 1 times [2019-11-07 00:50:13,459 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:13,459 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415836846] [2019-11-07 00:50:13,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:14,244 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:50:14,245 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415836846] [2019-11-07 00:50:14,245 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:50:14,246 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:50:14,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583824289] [2019-11-07 00:50:14,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:50:14,254 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:14,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:50:14,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:50:14,271 INFO L87 Difference]: Start difference. First operand 653 states. Second operand 2 states. [2019-11-07 00:50:14,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:14,365 INFO L93 Difference]: Finished difference Result 992 states and 1342 transitions. [2019-11-07 00:50:14,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:50:14,372 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 220 [2019-11-07 00:50:14,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:14,410 INFO L225 Difference]: With dead ends: 992 [2019-11-07 00:50:14,410 INFO L226 Difference]: Without dead ends: 624 [2019-11-07 00:50:14,424 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 00:50:14,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-11-07 00:50:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2019-11-07 00:50:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2019-11-07 00:50:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 847 transitions. [2019-11-07 00:50:14,543 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 847 transitions. Word has length 220 [2019-11-07 00:50:14,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:14,546 INFO L462 AbstractCegarLoop]: Abstraction has 624 states and 847 transitions. [2019-11-07 00:50:14,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:50:14,547 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 847 transitions. [2019-11-07 00:50:14,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-11-07 00:50:14,552 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:14,553 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:14,553 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:14,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:14,554 INFO L82 PathProgramCache]: Analyzing trace with hash 336824807, now seen corresponding path program 1 times [2019-11-07 00:50:14,554 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:14,554 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151333334] [2019-11-07 00:50:14,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:14,976 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:50:14,976 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151333334] [2019-11-07 00:50:14,977 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:50:14,977 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:50:14,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374798498] [2019-11-07 00:50:14,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:50:14,983 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:14,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:50:14,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:50:14,986 INFO L87 Difference]: Start difference. First operand 624 states and 847 transitions. Second operand 3 states. [2019-11-07 00:50:15,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:15,055 INFO L93 Difference]: Finished difference Result 975 states and 1302 transitions. [2019-11-07 00:50:15,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:50:15,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2019-11-07 00:50:15,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:15,061 INFO L225 Difference]: With dead ends: 975 [2019-11-07 00:50:15,062 INFO L226 Difference]: Without dead ends: 627 [2019-11-07 00:50:15,064 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 00:50:15,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2019-11-07 00:50:15,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 626. [2019-11-07 00:50:15,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-11-07 00:50:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 849 transitions. [2019-11-07 00:50:15,115 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 849 transitions. Word has length 221 [2019-11-07 00:50:15,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:15,115 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 849 transitions. [2019-11-07 00:50:15,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:50:15,116 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 849 transitions. [2019-11-07 00:50:15,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-11-07 00:50:15,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:15,126 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:50:15,126 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:15,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:15,127 INFO L82 PathProgramCache]: Analyzing trace with hash 982299259, now seen corresponding path program 1 times [2019-11-07 00:50:15,127 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:15,127 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199769228] [2019-11-07 00:50:15,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:15,369 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:50:15,370 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199769228] [2019-11-07 00:50:15,370 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:50:15,370 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:50:15,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253867760] [2019-11-07 00:50:15,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:50:15,374 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:15,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:50:15,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:50:15,375 INFO L87 Difference]: Start difference. First operand 626 states and 849 transitions. Second operand 3 states. [2019-11-07 00:50:15,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:15,438 INFO L93 Difference]: Finished difference Result 1230 states and 1699 transitions. [2019-11-07 00:50:15,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:50:15,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2019-11-07 00:50:15,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:15,448 INFO L225 Difference]: With dead ends: 1230 [2019-11-07 00:50:15,448 INFO L226 Difference]: Without dead ends: 669 [2019-11-07 00:50:15,451 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 00:50:15,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2019-11-07 00:50:15,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 668. [2019-11-07 00:50:15,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2019-11-07 00:50:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 921 transitions. [2019-11-07 00:50:15,518 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 921 transitions. Word has length 227 [2019-11-07 00:50:15,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:15,519 INFO L462 AbstractCegarLoop]: Abstraction has 668 states and 921 transitions. [2019-11-07 00:50:15,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:50:15,520 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 921 transitions. [2019-11-07 00:50:15,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-11-07 00:50:15,530 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:15,531 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:50:15,531 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:15,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:15,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1381931188, now seen corresponding path program 1 times [2019-11-07 00:50:15,537 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:15,538 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871559801] [2019-11-07 00:50:15,538 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:16,255 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871559801] [2019-11-07 00:50:16,256 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716625656] [2019-11-07 00:50:16,257 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 00:50:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:17,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:17,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:50:17,462 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:18,130 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:18,221 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:18,314 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:18,511 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:18,512 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:50:18,512 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-11-07 00:50:18,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322479868] [2019-11-07 00:50:18,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:50:18,513 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:18,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:50:18,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:50:18,516 INFO L87 Difference]: Start difference. First operand 668 states and 921 transitions. Second operand 9 states. [2019-11-07 00:50:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:20,273 INFO L93 Difference]: Finished difference Result 1314 states and 1822 transitions. [2019-11-07 00:50:20,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:50:20,274 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2019-11-07 00:50:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:20,280 INFO L225 Difference]: With dead ends: 1314 [2019-11-07 00:50:20,281 INFO L226 Difference]: Without dead ends: 682 [2019-11-07 00:50:20,284 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 445 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:50:20,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-11-07 00:50:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-11-07 00:50:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-11-07 00:50:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 939 transitions. [2019-11-07 00:50:20,339 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 939 transitions. Word has length 228 [2019-11-07 00:50:20,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:20,340 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 939 transitions. [2019-11-07 00:50:20,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:50:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 939 transitions. [2019-11-07 00:50:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-11-07 00:50:20,345 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:20,346 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-11-07 00:50:20,554 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:20,555 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:20,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:20,555 INFO L82 PathProgramCache]: Analyzing trace with hash -468346555, now seen corresponding path program 1 times [2019-11-07 00:50:20,555 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:20,556 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337788047] [2019-11-07 00:50:20,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:21,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337788047] [2019-11-07 00:50:21,043 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873737781] [2019-11-07 00:50:21,044 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 00:50:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:21,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:50:21,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:50:22,071 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:22,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:22,451 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:22,511 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:50:22,512 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-11-07 00:50:22,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513303583] [2019-11-07 00:50:22,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:50:22,514 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:22,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:50:22,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:50:22,515 INFO L87 Difference]: Start difference. First operand 682 states and 939 transitions. Second operand 7 states. [2019-11-07 00:50:24,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:24,186 INFO L93 Difference]: Finished difference Result 1315 states and 1826 transitions. [2019-11-07 00:50:24,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:50:24,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2019-11-07 00:50:24,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:24,193 INFO L225 Difference]: With dead ends: 1315 [2019-11-07 00:50:24,193 INFO L226 Difference]: Without dead ends: 684 [2019-11-07 00:50:24,197 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 452 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-11-07 00:50:24,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2019-11-07 00:50:24,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2019-11-07 00:50:24,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2019-11-07 00:50:24,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 942 transitions. [2019-11-07 00:50:24,234 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 942 transitions. Word has length 229 [2019-11-07 00:50:24,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:24,234 INFO L462 AbstractCegarLoop]: Abstraction has 684 states and 942 transitions. [2019-11-07 00:50:24,235 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:50:24,235 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 942 transitions. [2019-11-07 00:50:24,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-11-07 00:50:24,240 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:24,240 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 00:50:24,449 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:24,450 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:24,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:24,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1040586273, now seen corresponding path program 1 times [2019-11-07 00:50:24,451 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:24,451 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518754073] [2019-11-07 00:50:24,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:24,994 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518754073] [2019-11-07 00:50:24,994 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889249912] [2019-11-07 00:50:24,994 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 00:50:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:25,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:25,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:26,127 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:26,128 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:26,476 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:26,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:26,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:26,807 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:26,807 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-11-07 00:50:26,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668265372] [2019-11-07 00:50:26,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:50:26,809 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:26,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:50:26,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:50:26,810 INFO L87 Difference]: Start difference. First operand 684 states and 942 transitions. Second operand 16 states. [2019-11-07 00:50:29,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:29,521 INFO L93 Difference]: Finished difference Result 1319 states and 1826 transitions. [2019-11-07 00:50:29,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:29,521 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 230 [2019-11-07 00:50:29,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:29,526 INFO L225 Difference]: With dead ends: 1319 [2019-11-07 00:50:29,526 INFO L226 Difference]: Without dead ends: 696 [2019-11-07 00:50:29,529 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 449 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:50:29,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2019-11-07 00:50:29,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 694. [2019-11-07 00:50:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-11-07 00:50:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 953 transitions. [2019-11-07 00:50:29,558 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 953 transitions. Word has length 230 [2019-11-07 00:50:29,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:29,559 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 953 transitions. [2019-11-07 00:50:29,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:50:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 953 transitions. [2019-11-07 00:50:29,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-11-07 00:50:29,563 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:29,564 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 00:50:29,771 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:29,771 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:29,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:29,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1355231744, now seen corresponding path program 2 times [2019-11-07 00:50:29,772 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:29,774 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274336245] [2019-11-07 00:50:29,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:30,214 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274336245] [2019-11-07 00:50:30,214 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543793593] [2019-11-07 00:50:30,214 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 00:50:30,771 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:50:30,771 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:50:30,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:50:30,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:50:30,965 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:31,507 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:31,508 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-11-07 00:50:31,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565217021] [2019-11-07 00:50:31,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:50:31,512 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:31,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:50:31,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:50:31,514 INFO L87 Difference]: Start difference. First operand 694 states and 953 transitions. Second operand 14 states. [2019-11-07 00:50:34,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:34,493 INFO L93 Difference]: Finished difference Result 2349 states and 3265 transitions. [2019-11-07 00:50:34,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:50:34,493 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 231 [2019-11-07 00:50:34,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:34,507 INFO L225 Difference]: With dead ends: 2349 [2019-11-07 00:50:34,508 INFO L226 Difference]: Without dead ends: 2014 [2019-11-07 00:50:34,511 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 460 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-11-07 00:50:34,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2019-11-07 00:50:34,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1631. [2019-11-07 00:50:34,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1631 states. [2019-11-07 00:50:34,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2308 transitions. [2019-11-07 00:50:34,651 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2308 transitions. Word has length 231 [2019-11-07 00:50:34,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:34,653 INFO L462 AbstractCegarLoop]: Abstraction has 1631 states and 2308 transitions. [2019-11-07 00:50:34,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:50:34,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2308 transitions. [2019-11-07 00:50:34,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-11-07 00:50:34,663 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:34,663 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:34,870 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:34,871 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:34,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:34,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2088411479, now seen corresponding path program 1 times [2019-11-07 00:50:34,872 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:34,873 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039659662] [2019-11-07 00:50:34,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:35,223 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039659662] [2019-11-07 00:50:35,223 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055362579] [2019-11-07 00:50:35,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:35,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:35,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:36,133 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:36,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:36,551 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:36,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:36,804 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:36,805 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-11-07 00:50:36,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589381243] [2019-11-07 00:50:36,806 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:50:36,806 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:36,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:50:36,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:50:36,807 INFO L87 Difference]: Start difference. First operand 1631 states and 2308 transitions. Second operand 15 states. [2019-11-07 00:50:39,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:39,800 INFO L93 Difference]: Finished difference Result 3156 states and 4492 transitions. [2019-11-07 00:50:39,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:39,801 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 232 [2019-11-07 00:50:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:39,812 INFO L225 Difference]: With dead ends: 3156 [2019-11-07 00:50:39,812 INFO L226 Difference]: Without dead ends: 1637 [2019-11-07 00:50:39,818 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 453 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:50:39,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2019-11-07 00:50:39,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1631. [2019-11-07 00:50:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1631 states. [2019-11-07 00:50:39,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2306 transitions. [2019-11-07 00:50:39,890 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2306 transitions. Word has length 232 [2019-11-07 00:50:39,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:39,890 INFO L462 AbstractCegarLoop]: Abstraction has 1631 states and 2306 transitions. [2019-11-07 00:50:39,890 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:50:39,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2306 transitions. [2019-11-07 00:50:39,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-11-07 00:50:39,897 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:39,898 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:40,105 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:40,105 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:40,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:40,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1296609019, now seen corresponding path program 1 times [2019-11-07 00:50:40,107 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:40,112 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955308187] [2019-11-07 00:50:40,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:40,453 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955308187] [2019-11-07 00:50:40,453 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434473006] [2019-11-07 00:50:40,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:41,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:50:41,245 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:41,374 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:41,620 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:41,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:50:41,765 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:41,766 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-11-07 00:50:41,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734438269] [2019-11-07 00:50:41,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:50:41,767 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:41,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:50:41,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:50:41,768 INFO L87 Difference]: Start difference. First operand 1631 states and 2306 transitions. Second operand 12 states.