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-f4eb214f-m [2019-10-13 21:15:17,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:17,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:17,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:17,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:17,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:17,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:17,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:17,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:17,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:17,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:17,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:17,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:17,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:17,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:17,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:17,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:17,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:17,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:17,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:17,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:17,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:17,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:17,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:17,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:17,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:17,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:17,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:17,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:17,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:17,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:17,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:17,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:17,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:17,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:17,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:17,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:17,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:17,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:17,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:17,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:17,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:15:17,289 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:17,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:17,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:17,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:17,291 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:17,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:17,292 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:17,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:17,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:17,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:17,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:17,293 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:17,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:17,293 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:17,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:17,293 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:17,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:17,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:17,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:17,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:17,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:17,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:17,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:17,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:17,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:17,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:17,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:17,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:17,296 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:15:17,583 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:17,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:17,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:17,601 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:17,601 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:17,602 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c [2019-10-13 21:15:17,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd63c68c6/89747fa0963843efb89671bcda908acc/FLAG48a767345 [2019-10-13 21:15:18,371 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:18,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c [2019-10-13 21:15:18,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd63c68c6/89747fa0963843efb89671bcda908acc/FLAG48a767345 [2019-10-13 21:15:18,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd63c68c6/89747fa0963843efb89671bcda908acc [2019-10-13 21:15:18,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:18,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:18,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:18,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:18,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:18,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:18" (1/1) ... [2019-10-13 21:15:18,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eaad935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:18, skipping insertion in model container [2019-10-13 21:15:18,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:18" (1/1) ... [2019-10-13 21:15:18,557 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:18,663 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:19,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:19,485 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:19,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:19,786 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:19,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19 WrapperNode [2019-10-13 21:15:19,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:19,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:19,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:19,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:19,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:19,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:19,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:19,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:19,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:20,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:20,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... [2019-10-13 21:15:20,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:20,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:20,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:20,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:20,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:20,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:20,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:20,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:20,147 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:20,147 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:20,148 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:20,149 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:20,149 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:20,150 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:20,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:20,153 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:20,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:20,156 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:20,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:20,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:20,159 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:15:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:20,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:20,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:20,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:20,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:20,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:20,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:20,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:20,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:20,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:20,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:20,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:20,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:20,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:20,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:20,163 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:20,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:20,165 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:20,166 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:15:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:20,170 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:20,171 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:15:20,172 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:20,172 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:15:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:20,173 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:20,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:20,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:20,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:20,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:20,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:20,175 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:20,175 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:20,175 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:20,175 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:20,175 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:20,176 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:20,176 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:20,176 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:20,176 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:20,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:20,177 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:15:20,178 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:15:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:20,179 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:20,180 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:20,181 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:20,181 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:20,181 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:20,182 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:20,183 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:20,184 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:20,185 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:20,188 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:20,189 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:20,189 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:20,190 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:20,190 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:20,191 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:20,193 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:20,194 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:20,194 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:20,194 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:20,194 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:20,194 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:20,194 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:20,195 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:20,196 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:20,197 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:20,197 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:20,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:20,197 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:20,197 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:15:20,197 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:15:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:15:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:15:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:15:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:15:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:22,421 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:22,422 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:22,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:22 BoogieIcfgContainer [2019-10-13 21:15:22,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:22,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:22,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:22,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:22,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:18" (1/3) ... [2019-10-13 21:15:22,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c921a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:22, skipping insertion in model container [2019-10-13 21:15:22,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:19" (2/3) ... [2019-10-13 21:15:22,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c921a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:22, skipping insertion in model container [2019-10-13 21:15:22,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:22" (3/3) ... [2019-10-13 21:15:22,436 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product34.cil.c [2019-10-13 21:15:22,450 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:22,461 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:22,472 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:22,516 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:22,516 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:22,516 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:22,517 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:22,517 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:22,520 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:22,520 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:22,520 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states. [2019-10-13 21:15:22,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-13 21:15:22,614 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,615 INFO L380 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] [2019-10-13 21:15:22,618 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1025683934, now seen corresponding path program 1 times [2019-10-13 21:15:22,639 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578604402] [2019-10-13 21:15:22,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,640 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:23,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578604402] [2019-10-13 21:15:23,411 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:23,412 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:23,412 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225213312] [2019-10-13 21:15:23,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:23,421 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:23,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:23,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:23,438 INFO L87 Difference]: Start difference. First operand 653 states. Second operand 2 states. [2019-10-13 21:15:23,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:23,536 INFO L93 Difference]: Finished difference Result 992 states and 1342 transitions. [2019-10-13 21:15:23,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:23,538 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 220 [2019-10-13 21:15:23,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:23,583 INFO L225 Difference]: With dead ends: 992 [2019-10-13 21:15:23,583 INFO L226 Difference]: Without dead ends: 624 [2019-10-13 21:15:23,591 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-10-13 21:15:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2019-10-13 21:15:23,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2019-10-13 21:15:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 847 transitions. [2019-10-13 21:15:23,724 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 847 transitions. Word has length 220 [2019-10-13 21:15:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:23,728 INFO L462 AbstractCegarLoop]: Abstraction has 624 states and 847 transitions. [2019-10-13 21:15:23,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:23,729 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 847 transitions. [2019-10-13 21:15:23,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-13 21:15:23,740 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:23,740 INFO L380 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] [2019-10-13 21:15:23,740 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:23,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:23,741 INFO L82 PathProgramCache]: Analyzing trace with hash 336824807, now seen corresponding path program 1 times [2019-10-13 21:15:23,741 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:23,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115350087] [2019-10-13 21:15:23,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:24,043 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115350087] [2019-10-13 21:15:24,043 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:24,043 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:24,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418228427] [2019-10-13 21:15:24,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:24,049 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:24,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:24,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:24,050 INFO L87 Difference]: Start difference. First operand 624 states and 847 transitions. Second operand 3 states. [2019-10-13 21:15:24,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:24,189 INFO L93 Difference]: Finished difference Result 975 states and 1302 transitions. [2019-10-13 21:15:24,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:24,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2019-10-13 21:15:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:24,203 INFO L225 Difference]: With dead ends: 975 [2019-10-13 21:15:24,203 INFO L226 Difference]: Without dead ends: 627 [2019-10-13 21:15:24,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:24,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2019-10-13 21:15:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 626. [2019-10-13 21:15:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-13 21:15:24,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 849 transitions. [2019-10-13 21:15:24,265 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 849 transitions. Word has length 221 [2019-10-13 21:15:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:24,266 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 849 transitions. [2019-10-13 21:15:24,266 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 849 transitions. [2019-10-13 21:15:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-13 21:15:24,280 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:24,280 INFO L380 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] [2019-10-13 21:15:24,281 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:24,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:24,281 INFO L82 PathProgramCache]: Analyzing trace with hash 982299259, now seen corresponding path program 1 times [2019-10-13 21:15:24,282 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:24,282 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835358408] [2019-10-13 21:15:24,282 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:24,283 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:24,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:24,693 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835358408] [2019-10-13 21:15:24,693 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:24,693 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:24,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779060323] [2019-10-13 21:15:24,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:24,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:24,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:24,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:24,698 INFO L87 Difference]: Start difference. First operand 626 states and 849 transitions. Second operand 3 states. [2019-10-13 21:15:24,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:24,744 INFO L93 Difference]: Finished difference Result 1230 states and 1699 transitions. [2019-10-13 21:15:24,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:24,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2019-10-13 21:15:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:24,750 INFO L225 Difference]: With dead ends: 1230 [2019-10-13 21:15:24,751 INFO L226 Difference]: Without dead ends: 669 [2019-10-13 21:15:24,753 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:24,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2019-10-13 21:15:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 668. [2019-10-13 21:15:24,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2019-10-13 21:15:24,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 921 transitions. [2019-10-13 21:15:24,779 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 921 transitions. Word has length 227 [2019-10-13 21:15:24,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:24,779 INFO L462 AbstractCegarLoop]: Abstraction has 668 states and 921 transitions. [2019-10-13 21:15:24,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:24,780 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 921 transitions. [2019-10-13 21:15:24,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-13 21:15:24,784 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:24,785 INFO L380 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] [2019-10-13 21:15:24,785 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:24,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:24,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1381931188, now seen corresponding path program 1 times [2019-10-13 21:15:24,786 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:24,786 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141151096] [2019-10-13 21:15:24,786 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:24,786 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:24,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:25,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141151096] [2019-10-13 21:15:25,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616126402] [2019-10-13 21:15:25,382 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 [2019-10-13 21:15:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:26,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:26,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:26,547 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:26,547 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:26,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:27,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:27,178 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:27,389 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:27,390 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:27,390 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:15:27,391 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539575585] [2019-10-13 21:15:27,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:27,392 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:27,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:27,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:27,394 INFO L87 Difference]: Start difference. First operand 668 states and 921 transitions. Second operand 9 states. [2019-10-13 21:15:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:29,088 INFO L93 Difference]: Finished difference Result 1314 states and 1822 transitions. [2019-10-13 21:15:29,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:29,089 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2019-10-13 21:15:29,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:29,095 INFO L225 Difference]: With dead ends: 1314 [2019-10-13 21:15:29,095 INFO L226 Difference]: Without dead ends: 682 [2019-10-13 21:15:29,099 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 445 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:15:29,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-13 21:15:29,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-10-13 21:15:29,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-10-13 21:15:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 939 transitions. [2019-10-13 21:15:29,132 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 939 transitions. Word has length 228 [2019-10-13 21:15:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:29,132 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 939 transitions. [2019-10-13 21:15:29,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:29,133 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 939 transitions. [2019-10-13 21:15:29,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-13 21:15:29,137 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:29,138 INFO L380 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] [2019-10-13 21:15:29,345 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:29,346 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:29,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:29,347 INFO L82 PathProgramCache]: Analyzing trace with hash -468346555, now seen corresponding path program 1 times [2019-10-13 21:15:29,347 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:29,347 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859300295] [2019-10-13 21:15:29,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:29,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:29,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:29,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859300295] [2019-10-13 21:15:29,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231300496] [2019-10-13 21:15:29,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:30,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:30,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:30,972 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:31,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:31,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:31,415 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:31,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:15:31,416 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164176575] [2019-10-13 21:15:31,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:31,417 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:31,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:31,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:31,418 INFO L87 Difference]: Start difference. First operand 682 states and 939 transitions. Second operand 7 states. [2019-10-13 21:15:33,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:33,066 INFO L93 Difference]: Finished difference Result 1315 states and 1826 transitions. [2019-10-13 21:15:33,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:33,067 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2019-10-13 21:15:33,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:33,071 INFO L225 Difference]: With dead ends: 1315 [2019-10-13 21:15:33,072 INFO L226 Difference]: Without dead ends: 684 [2019-10-13 21:15:33,074 INFO L600 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 [2019-10-13 21:15:33,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2019-10-13 21:15:33,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2019-10-13 21:15:33,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2019-10-13 21:15:33,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 942 transitions. [2019-10-13 21:15:33,101 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 942 transitions. Word has length 229 [2019-10-13 21:15:33,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:33,101 INFO L462 AbstractCegarLoop]: Abstraction has 684 states and 942 transitions. [2019-10-13 21:15:33,101 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 942 transitions. [2019-10-13 21:15:33,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-13 21:15:33,107 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:33,107 INFO L380 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] [2019-10-13 21:15:33,324 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:33,324 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:33,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:33,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1040586273, now seen corresponding path program 1 times [2019-10-13 21:15:33,325 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:33,325 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050104685] [2019-10-13 21:15:33,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:33,325 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:33,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:33,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050104685] [2019-10-13 21:15:33,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176710327] [2019-10-13 21:15:33,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:34,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:34,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:34,852 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:34,852 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:35,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:35,270 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:35,349 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:35,507 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:35,508 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:15:35,508 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539971126] [2019-10-13 21:15:35,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:35,509 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:35,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:35,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:15:35,511 INFO L87 Difference]: Start difference. First operand 684 states and 942 transitions. Second operand 16 states. [2019-10-13 21:15:38,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:38,129 INFO L93 Difference]: Finished difference Result 1319 states and 1826 transitions. [2019-10-13 21:15:38,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:38,129 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 230 [2019-10-13 21:15:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:38,133 INFO L225 Difference]: With dead ends: 1319 [2019-10-13 21:15:38,133 INFO L226 Difference]: Without dead ends: 696 [2019-10-13 21:15:38,136 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 449 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:15:38,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2019-10-13 21:15:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 694. [2019-10-13 21:15:38,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-10-13 21:15:38,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 953 transitions. [2019-10-13 21:15:38,179 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 953 transitions. Word has length 230 [2019-10-13 21:15:38,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:38,179 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 953 transitions. [2019-10-13 21:15:38,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:38,180 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 953 transitions. [2019-10-13 21:15:38,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-13 21:15:38,184 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:38,185 INFO L380 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] [2019-10-13 21:15:38,393 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:38,399 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:38,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:38,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1355231744, now seen corresponding path program 2 times [2019-10-13 21:15:38,400 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:38,400 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629167204] [2019-10-13 21:15:38,400 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:38,400 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:38,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:38,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629167204] [2019-10-13 21:15:38,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134991897] [2019-10-13 21:15:38,796 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 [2019-10-13 21:15:39,384 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:15:39,384 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:39,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:15:39,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:15:39,603 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:40,051 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:40,052 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:40,052 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:15:40,052 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560429838] [2019-10-13 21:15:40,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:15:40,054 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:40,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:15:40,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:15:40,055 INFO L87 Difference]: Start difference. First operand 694 states and 953 transitions. Second operand 14 states. [2019-10-13 21:15:42,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:42,757 INFO L93 Difference]: Finished difference Result 2349 states and 3265 transitions. [2019-10-13 21:15:42,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:15:42,757 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 231 [2019-10-13 21:15:42,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:42,773 INFO L225 Difference]: With dead ends: 2349 [2019-10-13 21:15:42,773 INFO L226 Difference]: Without dead ends: 2014 [2019-10-13 21:15:42,776 INFO L600 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 [2019-10-13 21:15:42,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2019-10-13 21:15:42,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1631. [2019-10-13 21:15:42,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1631 states. [2019-10-13 21:15:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2308 transitions. [2019-10-13 21:15:42,878 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2308 transitions. Word has length 231 [2019-10-13 21:15:42,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:42,879 INFO L462 AbstractCegarLoop]: Abstraction has 1631 states and 2308 transitions. [2019-10-13 21:15:42,879 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:15:42,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2308 transitions. [2019-10-13 21:15:42,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 21:15:42,886 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:42,886 INFO L380 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] [2019-10-13 21:15:43,094 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:43,094 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:43,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:43,097 INFO L82 PathProgramCache]: Analyzing trace with hash 2088411479, now seen corresponding path program 1 times [2019-10-13 21:15:43,097 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:43,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479908614] [2019-10-13 21:15:43,097 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:43,097 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:43,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:43,416 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479908614] [2019-10-13 21:15:43,416 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167626521] [2019-10-13 21:15:43,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:44,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:44,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:44,398 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:44,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:44,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:44,862 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:45,043 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:45,043 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:45,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:15:45,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442308263] [2019-10-13 21:15:45,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:15:45,045 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:45,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:15:45,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:45,046 INFO L87 Difference]: Start difference. First operand 1631 states and 2308 transitions. Second operand 15 states. [2019-10-13 21:15:48,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:48,114 INFO L93 Difference]: Finished difference Result 3156 states and 4492 transitions. [2019-10-13 21:15:48,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:48,114 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 232 [2019-10-13 21:15:48,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:48,122 INFO L225 Difference]: With dead ends: 3156 [2019-10-13 21:15:48,123 INFO L226 Difference]: Without dead ends: 1637 [2019-10-13 21:15:48,128 INFO L600 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 [2019-10-13 21:15:48,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2019-10-13 21:15:48,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1631. [2019-10-13 21:15:48,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1631 states. [2019-10-13 21:15:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2306 transitions. [2019-10-13 21:15:48,213 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2306 transitions. Word has length 232 [2019-10-13 21:15:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:48,213 INFO L462 AbstractCegarLoop]: Abstraction has 1631 states and 2306 transitions. [2019-10-13 21:15:48,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:15:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2306 transitions. [2019-10-13 21:15:48,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 21:15:48,221 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:48,221 INFO L380 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] [2019-10-13 21:15:48,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:48,430 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:48,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:48,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1296609019, now seen corresponding path program 1 times [2019-10-13 21:15:48,432 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:48,437 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088416119] [2019-10-13 21:15:48,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:48,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:48,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:48,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088416119] [2019-10-13 21:15:48,781 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682908969] [2019-10-13 21:15:48,782 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 [2019-10-13 21:15:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:49,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:49,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:49,568 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:49,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:49,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:15:50,045 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:50,046 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:15:50,046 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622446531] [2019-10-13 21:15:50,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:50,048 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:50,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:50,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:50,049 INFO L87 Difference]: Start difference. First operand 1631 states and 2306 transitions. Second operand 12 states. [2019-10-13 21:15:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:51,429 INFO L93 Difference]: Finished difference Result 2591 states and 3618 transitions. [2019-10-13 21:15:51,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:51,435 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 233 [2019-10-13 21:15:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:51,442 INFO L225 Difference]: With dead ends: 2591 [2019-10-13 21:15:51,442 INFO L226 Difference]: Without dead ends: 1361 [2019-10-13 21:15:51,447 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 460 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:51,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2019-10-13 21:15:51,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2019-10-13 21:15:51,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2019-10-13 21:15:51,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1882 transitions. [2019-10-13 21:15:51,503 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1882 transitions. Word has length 233 [2019-10-13 21:15:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:51,503 INFO L462 AbstractCegarLoop]: Abstraction has 1361 states and 1882 transitions. [2019-10-13 21:15:51,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1882 transitions. [2019-10-13 21:15:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 21:15:51,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:51,509 INFO L380 BasicCegarLoop]: trace histogram [3, 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, 1, 1] [2019-10-13 21:15:51,721 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:51,722 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:51,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:51,722 INFO L82 PathProgramCache]: Analyzing trace with hash -589990004, now seen corresponding path program 1 times [2019-10-13 21:15:51,722 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:51,723 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507285080] [2019-10-13 21:15:51,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:51,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:51,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:15:51,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507285080] [2019-10-13 21:15:51,865 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264896646] [2019-10-13 21:15:51,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true