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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:11:25,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:11:25,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:11:25,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:11:25,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:11:25,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:11:25,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:11:25,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:11:25,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:11:25,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:11:25,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:11:25,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:11:25,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:11:25,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:11:25,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:11:25,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:11:25,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:11:25,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:11:25,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:11:25,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:11:25,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:11:25,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:11:25,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:11:25,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:11:25,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:11:25,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:11:25,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:11:25,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:11:25,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:11:25,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:11:25,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:11:25,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:11:25,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:11:25,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:11:25,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:11:25,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:11:25,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:11:25,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:11:25,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:11:25,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:11:25,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:11:25,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:11:25,467 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:11:25,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:11:25,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:11:25,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:11:25,469 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:11:25,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:11:25,470 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:11:25,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:11:25,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:11:25,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:11:25,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:11:25,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:11:25,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:11:25,471 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:11:25,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:11:25,472 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:11:25,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:11:25,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:11:25,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:11:25,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:11:25,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:11:25,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:11:25,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:11:25,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:11:25,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:11:25,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:11:25,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:11:25,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:11:25,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:11:25,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:11:25,771 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:11:25,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:11:25,776 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:11:25,776 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:11:25,777 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c [2019-10-15 03:11:25,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db4c79e1/52581a368dcd4695bd2fd56aa57bd1d6/FLAGd14ce16c8 [2019-10-15 03:11:26,562 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:11:26,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c [2019-10-15 03:11:26,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db4c79e1/52581a368dcd4695bd2fd56aa57bd1d6/FLAGd14ce16c8 [2019-10-15 03:11:26,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db4c79e1/52581a368dcd4695bd2fd56aa57bd1d6 [2019-10-15 03:11:26,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:11:26,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:11:26,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:11:26,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:11:26,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:11:26,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:11:26" (1/1) ... [2019-10-15 03:11:26,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7789f9f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:26, skipping insertion in model container [2019-10-15 03:11:26,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:11:26" (1/1) ... [2019-10-15 03:11:26,764 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:11:26,838 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:11:27,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:11:27,685 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:11:27,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:11:27,886 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:11:27,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:27 WrapperNode [2019-10-15 03:11:27,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:11:27,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:11:27,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:11:27,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:11:27,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:27" (1/1) ... [2019-10-15 03:11:27,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:27" (1/1) ... [2019-10-15 03:11:27,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:27" (1/1) ... [2019-10-15 03:11:27,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:27" (1/1) ... [2019-10-15 03:11:27,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:27" (1/1) ... [2019-10-15 03:11:28,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:27" (1/1) ... [2019-10-15 03:11:28,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:27" (1/1) ... [2019-10-15 03:11:28,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:11:28,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:11:28,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:11:28,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:11:28,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:11:28,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:11:28,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:11:28,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:11:28,172 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 03:11:28,172 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 03:11:28,173 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 03:11:28,174 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 03:11:28,175 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 03:11:28,175 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 03:11:28,175 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 03:11:28,176 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 03:11:28,177 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 03:11:28,177 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 03:11:28,177 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 03:11:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 03:11:28,178 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 03:11:28,181 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 03:11:28,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 03:11:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 03:11:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 03:11:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 03:11:28,182 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 03:11:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 03:11:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 03:11:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-15 03:11:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 03:11:28,183 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 03:11:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 03:11:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 03:11:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 03:11:28,184 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-15 03:11:28,185 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 03:11:28,185 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 03:11:28,185 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 03:11:28,186 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 03:11:28,186 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 03:11:28,186 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 03:11:28,186 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 03:11:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 03:11:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 03:11:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 03:11:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 03:11:28,187 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 03:11:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 03:11:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 03:11:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 03:11:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 03:11:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 03:11:28,188 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 03:11:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 03:11:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 03:11:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 03:11:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 03:11:28,189 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 03:11:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 03:11:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 03:11:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 03:11:28,190 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 03:11:28,191 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 03:11:28,191 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 03:11:28,191 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 03:11:28,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 03:11:28,192 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 03:11:28,192 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 03:11:28,192 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 03:11:28,192 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 03:11:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 03:11:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 03:11:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 03:11:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 03:11:28,193 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 03:11:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:11:28,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:11:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:11:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:11:28,195 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:11:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:11:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 03:11:28,196 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 03:11:28,197 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 03:11:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 03:11:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 03:11:28,198 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 03:11:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 03:11:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 03:11:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:11:28,199 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:11:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 03:11:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 03:11:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 03:11:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 03:11:28,201 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 03:11:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 03:11:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 03:11:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 03:11:28,202 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 03:11:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 03:11:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:11:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:11:28,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:11:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:11:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:11:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:11:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 03:11:28,204 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 03:11:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 03:11:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 03:11:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 03:11:28,205 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 03:11:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:11:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:11:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 03:11:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 03:11:28,206 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 03:11:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 03:11:28,207 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 03:11:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 03:11:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 03:11:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 03:11:28,208 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 03:11:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 03:11:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 03:11:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 03:11:28,209 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 03:11:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 03:11:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 03:11:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 03:11:28,211 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 03:11:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 03:11:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 03:11:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 03:11:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 03:11:28,213 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:11:28,214 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 03:11:28,218 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 03:11:28,219 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-15 03:11:28,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:11:28,219 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:11:28,220 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 03:11:28,220 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 03:11:28,221 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 03:11:28,221 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 03:11:28,221 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 03:11:28,222 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 03:11:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 03:11:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 03:11:28,229 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 03:11:28,230 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 03:11:28,230 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 03:11:28,231 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 03:11:28,231 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 03:11:28,231 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 03:11:28,231 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 03:11:28,231 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 03:11:28,232 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 03:11:28,232 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 03:11:28,232 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 03:11:28,232 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 03:11:28,232 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 03:11:28,233 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 03:11:28,233 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-15 03:11:28,233 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 03:11:28,233 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 03:11:28,233 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 03:11:28,233 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 03:11:28,234 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 03:11:28,234 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 03:11:28,234 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 03:11:28,234 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 03:11:28,234 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 03:11:28,235 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 03:11:28,235 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 03:11:28,235 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 03:11:28,235 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 03:11:28,235 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 03:11:28,235 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 03:11:28,236 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 03:11:28,236 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 03:11:28,236 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 03:11:28,236 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 03:11:28,236 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 03:11:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 03:11:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 03:11:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 03:11:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 03:11:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 03:11:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 03:11:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 03:11:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 03:11:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 03:11:28,239 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 03:11:28,239 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 03:11:28,239 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 03:11:28,239 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 03:11:28,239 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:11:28,239 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:11:28,239 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:11:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:11:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:11:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 03:11:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 03:11:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 03:11:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 03:11:28,240 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:11:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:11:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 03:11:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 03:11:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 03:11:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 03:11:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 03:11:28,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:11:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:11:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:11:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:11:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:11:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:11:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:11:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:11:28,242 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:11:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:11:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:11:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:11:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:11:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:11:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:11:28,243 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:11:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 03:11:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 03:11:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 03:11:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 03:11:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:11:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:11:28,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:11:32,768 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:11:32,768 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 03:11:32,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:11:32 BoogieIcfgContainer [2019-10-15 03:11:32,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:11:32,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:11:32,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:11:32,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:11:32,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:11:26" (1/3) ... [2019-10-15 03:11:32,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3125994a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:11:32, skipping insertion in model container [2019-10-15 03:11:32,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:11:27" (2/3) ... [2019-10-15 03:11:32,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3125994a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:11:32, skipping insertion in model container [2019-10-15 03:11:32,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:11:32" (3/3) ... [2019-10-15 03:11:32,778 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product15.cil.c [2019-10-15 03:11:32,788 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:11:32,797 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:11:32,809 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:11:32,838 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:11:32,838 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:11:32,838 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:11:32,839 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:11:32,839 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:11:32,839 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:11:32,839 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:11:32,839 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:11:32,866 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states. [2019-10-15 03:11:32,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 03:11:32,884 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:11:32,886 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-15 03:11:32,888 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:11:32,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:11:32,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1337867109, now seen corresponding path program 1 times [2019-10-15 03:11:32,904 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:11:32,905 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775312099] [2019-10-15 03:11:32,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:32,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:32,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:11:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:11:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:11:33,613 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775312099] [2019-10-15 03:11:33,614 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:11:33,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:11:33,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055010636] [2019-10-15 03:11:33,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:11:33,621 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:11:33,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:11:33,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:11:33,637 INFO L87 Difference]: Start difference. First operand 338 states. Second operand 2 states. [2019-10-15 03:11:33,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:11:33,695 INFO L93 Difference]: Finished difference Result 462 states and 544 transitions. [2019-10-15 03:11:33,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:11:33,696 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 146 [2019-10-15 03:11:33,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:11:33,714 INFO L225 Difference]: With dead ends: 462 [2019-10-15 03:11:33,714 INFO L226 Difference]: Without dead ends: 306 [2019-10-15 03:11:33,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:11:33,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2019-10-15 03:11:33,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2019-10-15 03:11:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 306 states. [2019-10-15 03:11:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 359 transitions. [2019-10-15 03:11:33,801 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 359 transitions. Word has length 146 [2019-10-15 03:11:33,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:11:33,803 INFO L462 AbstractCegarLoop]: Abstraction has 306 states and 359 transitions. [2019-10-15 03:11:33,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:11:33,804 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 359 transitions. [2019-10-15 03:11:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-15 03:11:33,810 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:11:33,810 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-15 03:11:33,810 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:11:33,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:11:33,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1569944248, now seen corresponding path program 1 times [2019-10-15 03:11:33,811 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:11:33,811 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758338311] [2019-10-15 03:11:33,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:33,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:33,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:11:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:11:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:11:34,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758338311] [2019-10-15 03:11:34,142 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:11:34,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:11:34,143 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128993483] [2019-10-15 03:11:34,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:11:34,148 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:11:34,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:11:34,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:11:34,149 INFO L87 Difference]: Start difference. First operand 306 states and 359 transitions. Second operand 3 states. [2019-10-15 03:11:34,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:11:34,213 INFO L93 Difference]: Finished difference Result 447 states and 513 transitions. [2019-10-15 03:11:34,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:11:34,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2019-10-15 03:11:34,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:11:34,218 INFO L225 Difference]: With dead ends: 447 [2019-10-15 03:11:34,218 INFO L226 Difference]: Without dead ends: 308 [2019-10-15 03:11:34,222 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:11:34,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2019-10-15 03:11:34,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2019-10-15 03:11:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2019-10-15 03:11:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 361 transitions. [2019-10-15 03:11:34,262 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 361 transitions. Word has length 147 [2019-10-15 03:11:34,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:11:34,263 INFO L462 AbstractCegarLoop]: Abstraction has 308 states and 361 transitions. [2019-10-15 03:11:34,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:11:34,264 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 361 transitions. [2019-10-15 03:11:34,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-15 03:11:34,273 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:11:34,274 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:11:34,274 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:11:34,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:11:34,274 INFO L82 PathProgramCache]: Analyzing trace with hash 239298933, now seen corresponding path program 1 times [2019-10-15 03:11:34,275 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:11:34,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090666295] [2019-10-15 03:11:34,275 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:34,275 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:34,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:11:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:11:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:11:34,500 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090666295] [2019-10-15 03:11:34,500 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:11:34,500 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:11:34,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577490949] [2019-10-15 03:11:34,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:11:34,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:11:34,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:11:34,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:11:34,502 INFO L87 Difference]: Start difference. First operand 308 states and 361 transitions. Second operand 3 states. [2019-10-15 03:11:34,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:11:34,558 INFO L93 Difference]: Finished difference Result 598 states and 729 transitions. [2019-10-15 03:11:34,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:11:34,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2019-10-15 03:11:34,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:11:34,569 INFO L225 Difference]: With dead ends: 598 [2019-10-15 03:11:34,570 INFO L226 Difference]: Without dead ends: 348 [2019-10-15 03:11:34,576 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:11:34,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2019-10-15 03:11:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 347. [2019-10-15 03:11:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2019-10-15 03:11:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 429 transitions. [2019-10-15 03:11:34,627 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 429 transitions. Word has length 156 [2019-10-15 03:11:34,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:11:34,628 INFO L462 AbstractCegarLoop]: Abstraction has 347 states and 429 transitions. [2019-10-15 03:11:34,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:11:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 429 transitions. [2019-10-15 03:11:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 03:11:34,641 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:11:34,642 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:11:34,642 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:11:34,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:11:34,642 INFO L82 PathProgramCache]: Analyzing trace with hash 462235384, now seen corresponding path program 1 times [2019-10-15 03:11:34,643 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:11:34,643 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986626534] [2019-10-15 03:11:34,644 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:34,644 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:34,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:11:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:11:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-15 03:11:34,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986626534] [2019-10-15 03:11:34,973 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:11:34,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:11:34,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394714740] [2019-10-15 03:11:34,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:11:34,976 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:11:34,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:11:34,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:11:34,977 INFO L87 Difference]: Start difference. First operand 347 states and 429 transitions. Second operand 3 states. [2019-10-15 03:11:35,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:11:35,026 INFO L93 Difference]: Finished difference Result 712 states and 928 transitions. [2019-10-15 03:11:35,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:11:35,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2019-10-15 03:11:35,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:11:35,036 INFO L225 Difference]: With dead ends: 712 [2019-10-15 03:11:35,037 INFO L226 Difference]: Without dead ends: 423 [2019-10-15 03:11:35,038 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:11:35,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2019-10-15 03:11:35,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 422. [2019-10-15 03:11:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2019-10-15 03:11:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 559 transitions. [2019-10-15 03:11:35,083 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 559 transitions. Word has length 157 [2019-10-15 03:11:35,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:11:35,086 INFO L462 AbstractCegarLoop]: Abstraction has 422 states and 559 transitions. [2019-10-15 03:11:35,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:11:35,086 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 559 transitions. [2019-10-15 03:11:35,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-10-15 03:11:35,094 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:11:35,095 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:11:35,095 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:11:35,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:11:35,096 INFO L82 PathProgramCache]: Analyzing trace with hash 758529619, now seen corresponding path program 1 times [2019-10-15 03:11:35,096 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:11:35,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750419649] [2019-10-15 03:11:35,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:35,098 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:35,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:11:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:11:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:11:35,884 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750419649] [2019-10-15 03:11:35,884 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:11:35,884 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-15 03:11:35,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159096423] [2019-10-15 03:11:35,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-15 03:11:35,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:11:35,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-15 03:11:35,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2019-10-15 03:11:35,887 INFO L87 Difference]: Start difference. First operand 422 states and 559 transitions. Second operand 26 states. [2019-10-15 03:11:42,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:11:42,046 INFO L93 Difference]: Finished difference Result 742 states and 935 transitions. [2019-10-15 03:11:42,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-15 03:11:42,051 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 160 [2019-10-15 03:11:42,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:11:42,056 INFO L225 Difference]: With dead ends: 742 [2019-10-15 03:11:42,056 INFO L226 Difference]: Without dead ends: 596 [2019-10-15 03:11:42,058 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=1647, Unknown=0, NotChecked=0, Total=1806 [2019-10-15 03:11:42,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2019-10-15 03:11:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 584. [2019-10-15 03:11:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2019-10-15 03:11:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 749 transitions. [2019-10-15 03:11:42,094 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 749 transitions. Word has length 160 [2019-10-15 03:11:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:11:42,095 INFO L462 AbstractCegarLoop]: Abstraction has 584 states and 749 transitions. [2019-10-15 03:11:42,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-15 03:11:42,095 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 749 transitions. [2019-10-15 03:11:42,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 03:11:42,098 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:11:42,099 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:11:42,099 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:11:42,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:11:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1039996662, now seen corresponding path program 1 times [2019-10-15 03:11:42,100 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:11:42,100 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871933525] [2019-10-15 03:11:42,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:42,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:42,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:11:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:11:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:11:42,378 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871933525] [2019-10-15 03:11:42,378 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:11:42,378 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:11:42,379 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070640264] [2019-10-15 03:11:42,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:11:42,380 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:11:42,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:11:42,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:11:42,384 INFO L87 Difference]: Start difference. First operand 584 states and 749 transitions. Second operand 10 states. [2019-10-15 03:11:42,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:11:42,463 INFO L93 Difference]: Finished difference Result 593 states and 758 transitions. [2019-10-15 03:11:42,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:11:42,464 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2019-10-15 03:11:42,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:11:42,469 INFO L225 Difference]: With dead ends: 593 [2019-10-15 03:11:42,469 INFO L226 Difference]: Without dead ends: 588 [2019-10-15 03:11:42,470 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:11:42,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2019-10-15 03:11:42,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2019-10-15 03:11:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-10-15 03:11:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 751 transitions. [2019-10-15 03:11:42,515 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 751 transitions. Word has length 164 [2019-10-15 03:11:42,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:11:42,517 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 751 transitions. [2019-10-15 03:11:42,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:11:42,518 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 751 transitions. [2019-10-15 03:11:42,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-15 03:11:42,523 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:11:42,523 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:11:42,523 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:11:42,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:11:42,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1434930001, now seen corresponding path program 1 times [2019-10-15 03:11:42,524 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:11:42,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679384771] [2019-10-15 03:11:42,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:42,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:42,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:11:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:11:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:11:42,895 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679384771] [2019-10-15 03:11:42,895 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:11:42,895 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:11:42,896 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77665519] [2019-10-15 03:11:42,896 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:11:42,900 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:11:42,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:11:42,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:11:42,901 INFO L87 Difference]: Start difference. First operand 588 states and 751 transitions. Second operand 12 states. [2019-10-15 03:11:45,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:11:45,115 INFO L93 Difference]: Finished difference Result 1158 states and 1437 transitions. [2019-10-15 03:11:45,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:11:45,117 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 166 [2019-10-15 03:11:45,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:11:45,128 INFO L225 Difference]: With dead ends: 1158 [2019-10-15 03:11:45,128 INFO L226 Difference]: Without dead ends: 1020 [2019-10-15 03:11:45,129 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2019-10-15 03:11:45,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2019-10-15 03:11:45,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 970. [2019-10-15 03:11:45,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2019-10-15 03:11:45,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1215 transitions. [2019-10-15 03:11:45,201 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1215 transitions. Word has length 166 [2019-10-15 03:11:45,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:11:45,203 INFO L462 AbstractCegarLoop]: Abstraction has 970 states and 1215 transitions. [2019-10-15 03:11:45,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:11:45,203 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1215 transitions. [2019-10-15 03:11:45,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-15 03:11:45,208 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:11:45,208 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:11:45,209 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:11:45,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:11:45,209 INFO L82 PathProgramCache]: Analyzing trace with hash -108051550, now seen corresponding path program 1 times [2019-10-15 03:11:45,210 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:11:45,210 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339198190] [2019-10-15 03:11:45,210 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:45,211 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:11:45,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:11:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:11:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:11:45,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339198190] [2019-10-15 03:11:45,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322931876] [2019-10-15 03:11:45,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:11:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:11:46,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:11:46,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:11:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:11:46,427 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:11:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:11:46,780 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [241841323] [2019-10-15 03:11:46,813 INFO L162 IcfgInterpreter]: Started Sifa with 165 locations of interest [2019-10-15 03:11:46,813 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:11:46,820 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:11:46,828 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:11:46,829 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs