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 0.1.24-13a467a-m [2019-10-15 01:14:18,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:18,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:18,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:18,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:18,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:18,204 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:18,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:18,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:18,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:18,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:18,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:18,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:18,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:18,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:18,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:18,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:18,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:18,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:18,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:18,240 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:18,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:18,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:18,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:18,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:18,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:18,249 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:18,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:18,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:18,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:18,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:18,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:18,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:18,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:18,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:18,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:18,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:18,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:18,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:18,261 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:18,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:18,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:14:18,283 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:18,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:18,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:18,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:18,286 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:18,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:18,287 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:18,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:18,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:18,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:18,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:18,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:18,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:18,289 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:18,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:18,290 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:18,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:18,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:18,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:18,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:18,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:18,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:18,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:18,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:18,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:18,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:18,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:18,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:18,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:14:18,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:18,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:18,614 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:18,616 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:18,616 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:18,617 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c [2019-10-15 01:14:18,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a438036/93816b0c294944fa9c855b415fc16f5d/FLAG0ed8399b1 [2019-10-15 01:14:19,329 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:19,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product34.cil.c [2019-10-15 01:14:19,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a438036/93816b0c294944fa9c855b415fc16f5d/FLAG0ed8399b1 [2019-10-15 01:14:19,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60a438036/93816b0c294944fa9c855b415fc16f5d [2019-10-15 01:14:19,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:19,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:19,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:19,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:19,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:19,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:19" (1/1) ... [2019-10-15 01:14:19,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d93e00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:19, skipping insertion in model container [2019-10-15 01:14:19,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:19" (1/1) ... [2019-10-15 01:14:19,627 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:19,702 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:20,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:20,565 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:14:20,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:20,836 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:14:20,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20 WrapperNode [2019-10-15 01:14:20,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:20,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:14:20,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:14:20,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:14:20,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:21,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:21,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:21,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:14:21,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:14:21,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:14:21,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:14:21,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:21,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:14:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:14:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:14:21,157 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:14:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:14:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:14:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:14:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:14:21,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:14:21,159 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:14:21,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:14:21,159 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:14:21,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:14:21,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:14:21,159 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:14:21,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:14:21,160 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:14:21,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:14:21,161 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:14:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:14:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:14:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:14:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:14:21,162 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:14:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:14:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:14:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:14:21,163 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:14:21,164 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:14:21,165 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:14:21,166 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:14:21,166 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:14:21,166 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:14:21,166 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:14:21,166 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:14:21,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:14:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:14:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:14:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:14:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:14:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:14:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:14:21,167 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:14:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:14:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:14:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:14:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:14:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:14:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:14:21,168 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:14:21,169 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:14:21,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:14:21,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:14:21,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:14:21,169 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:14:21,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:14:21,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:14:21,170 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:14:21,170 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:14:21,170 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:14:21,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:14:21,171 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:14:21,171 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:14:21,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:14:21,172 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:14:21,172 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:14:21,172 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:14:21,172 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:14:21,174 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:14:21,174 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:14:21,174 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:14:21,174 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:14:21,175 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:14:21,175 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:14:21,175 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:14:21,175 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:14:21,176 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:14:21,176 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:14:21,176 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:14:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:14:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:14:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:14:21,177 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:14:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:14:21,178 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:14:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:14:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:14:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:14:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:14:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:14:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:21,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:14:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:14:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:14:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:14:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:14:21,180 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:14:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:14:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:14:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:14:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:14:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:14:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:14:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:14:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:14:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:14:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:14:21,182 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:14:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:14:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:14:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:14:21,183 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:14:21,184 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:14:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:14:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:14:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:14:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:14:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:14:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:14:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:14:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:14:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:14:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:14:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:14:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:14:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:14:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:14:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:14:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:14:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:14:21,192 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:14:21,193 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:14:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:14:21,196 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:14:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:14:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:14:21,197 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:14:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:14:21,198 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:14:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:14:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:14:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:14:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:14:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:14:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:14:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:14:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:14:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:14:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:14:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:14:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:14:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:14:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:14:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:14:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:14:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:14:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:14:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:14:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:14:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:14:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:14:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:14:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:14:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:14:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:14:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:14:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:14:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:14:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:14:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:14:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:14:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:14:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:14:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:14:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:14:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:14:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:14:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:14:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:14:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:14:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:14:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:14:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:14:21,212 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:14:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:14:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:14:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:14:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:14:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:14:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:14:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:14:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:14:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:14:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:14:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:14:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:14:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:14:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:14:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:14:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:14:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:14:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:14:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:14:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:14:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:14:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:14:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:14:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:14:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:14:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:14:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:14:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:14:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:14:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:14:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:14:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:14:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:14:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:14:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:14:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:14:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:14:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:14:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:14:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:21,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:14:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:14:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:14:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:14:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:14:21,220 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:14:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:14:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:14:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:14:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:14:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:14:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:14:21,221 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:14:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:14:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:14:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:14:21,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:14:23,413 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:14:23,414 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:14:23,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:23 BoogieIcfgContainer [2019-10-15 01:14:23,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:14:23,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:14:23,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:14:23,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:14:23,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:19" (1/3) ... [2019-10-15 01:14:23,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b202e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:23, skipping insertion in model container [2019-10-15 01:14:23,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (2/3) ... [2019-10-15 01:14:23,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b202e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:23, skipping insertion in model container [2019-10-15 01:14:23,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:23" (3/3) ... [2019-10-15 01:14:23,430 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product34.cil.c [2019-10-15 01:14:23,446 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:14:23,458 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:14:23,472 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:14:23,518 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:14:23,519 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:14:23,519 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:14:23,519 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:14:23,519 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:14:23,522 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:14:23,522 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:14:23,522 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:14:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states. [2019-10-15 01:14:23,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-10-15 01:14:23,612 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:23,615 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] [2019-10-15 01:14:23,620 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:23,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:23,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1025683934, now seen corresponding path program 1 times [2019-10-15 01:14:23,637 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:23,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022331942] [2019-10-15 01:14:23,638 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:23,638 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:23,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:24,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022331942] [2019-10-15 01:14:24,440 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:24,441 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:14:24,442 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424692452] [2019-10-15 01:14:24,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:14:24,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:24,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:14:24,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:24,470 INFO L87 Difference]: Start difference. First operand 653 states. Second operand 2 states. [2019-10-15 01:14:24,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:24,577 INFO L93 Difference]: Finished difference Result 992 states and 1342 transitions. [2019-10-15 01:14:24,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:14:24,579 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 220 [2019-10-15 01:14:24,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:24,613 INFO L225 Difference]: With dead ends: 992 [2019-10-15 01:14:24,613 INFO L226 Difference]: Without dead ends: 624 [2019-10-15 01:14:24,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:24,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-10-15 01:14:24,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 624. [2019-10-15 01:14:24,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2019-10-15 01:14:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 847 transitions. [2019-10-15 01:14:24,723 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 847 transitions. Word has length 220 [2019-10-15 01:14:24,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:24,725 INFO L462 AbstractCegarLoop]: Abstraction has 624 states and 847 transitions. [2019-10-15 01:14:24,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:14:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 847 transitions. [2019-10-15 01:14:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-10-15 01:14:24,732 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:24,732 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] [2019-10-15 01:14:24,733 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:24,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:24,733 INFO L82 PathProgramCache]: Analyzing trace with hash 336824807, now seen corresponding path program 1 times [2019-10-15 01:14:24,734 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:24,734 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357111581] [2019-10-15 01:14:24,734 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:24,734 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:24,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:25,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357111581] [2019-10-15 01:14:25,020 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:25,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:25,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253057390] [2019-10-15 01:14:25,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:25,024 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:25,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:25,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:25,025 INFO L87 Difference]: Start difference. First operand 624 states and 847 transitions. Second operand 3 states. [2019-10-15 01:14:25,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:25,078 INFO L93 Difference]: Finished difference Result 975 states and 1302 transitions. [2019-10-15 01:14:25,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:25,079 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2019-10-15 01:14:25,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:25,085 INFO L225 Difference]: With dead ends: 975 [2019-10-15 01:14:25,085 INFO L226 Difference]: Without dead ends: 627 [2019-10-15 01:14:25,088 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:25,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2019-10-15 01:14:25,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 626. [2019-10-15 01:14:25,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-15 01:14:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 849 transitions. [2019-10-15 01:14:25,157 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 849 transitions. Word has length 221 [2019-10-15 01:14:25,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:25,159 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 849 transitions. [2019-10-15 01:14:25,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 849 transitions. [2019-10-15 01:14:25,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-15 01:14:25,168 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:25,168 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] [2019-10-15 01:14:25,169 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:25,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:25,169 INFO L82 PathProgramCache]: Analyzing trace with hash 982299259, now seen corresponding path program 1 times [2019-10-15 01:14:25,169 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:25,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869306745] [2019-10-15 01:14:25,170 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:25,170 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:25,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:25,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869306745] [2019-10-15 01:14:25,457 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:25,457 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:25,457 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926965029] [2019-10-15 01:14:25,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:25,463 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:25,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:25,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:25,464 INFO L87 Difference]: Start difference. First operand 626 states and 849 transitions. Second operand 3 states. [2019-10-15 01:14:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:25,533 INFO L93 Difference]: Finished difference Result 1230 states and 1699 transitions. [2019-10-15 01:14:25,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:25,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2019-10-15 01:14:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:25,542 INFO L225 Difference]: With dead ends: 1230 [2019-10-15 01:14:25,542 INFO L226 Difference]: Without dead ends: 669 [2019-10-15 01:14:25,546 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:25,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2019-10-15 01:14:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 668. [2019-10-15 01:14:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2019-10-15 01:14:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 921 transitions. [2019-10-15 01:14:25,719 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 921 transitions. Word has length 227 [2019-10-15 01:14:25,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:25,720 INFO L462 AbstractCegarLoop]: Abstraction has 668 states and 921 transitions. [2019-10-15 01:14:25,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:25,720 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 921 transitions. [2019-10-15 01:14:25,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-15 01:14:25,725 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:25,726 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] [2019-10-15 01:14:25,726 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:25,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:25,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1381931188, now seen corresponding path program 1 times [2019-10-15 01:14:25,727 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:25,727 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259375442] [2019-10-15 01:14:25,727 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:25,728 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:25,728 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:26,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259375442] [2019-10-15 01:14:26,179 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520369992] [2019-10-15 01:14:26,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:26,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 3179 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:26,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:27,208 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:27,755 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:27,861 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:27,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:28,142 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:28,142 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:28,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-15 01:14:28,143 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335206083] [2019-10-15 01:14:28,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:28,144 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:28,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:28,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:14:28,146 INFO L87 Difference]: Start difference. First operand 668 states and 921 transitions. Second operand 9 states. [2019-10-15 01:14:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:29,907 INFO L93 Difference]: Finished difference Result 1314 states and 1822 transitions. [2019-10-15 01:14:29,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:29,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 228 [2019-10-15 01:14:29,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:29,915 INFO L225 Difference]: With dead ends: 1314 [2019-10-15 01:14:29,916 INFO L226 Difference]: Without dead ends: 682 [2019-10-15 01:14:29,919 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 445 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:14:29,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2019-10-15 01:14:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2019-10-15 01:14:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-10-15 01:14:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 939 transitions. [2019-10-15 01:14:29,967 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 939 transitions. Word has length 228 [2019-10-15 01:14:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:29,968 INFO L462 AbstractCegarLoop]: Abstraction has 682 states and 939 transitions. [2019-10-15 01:14:29,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 939 transitions. [2019-10-15 01:14:29,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-15 01:14:29,972 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:29,973 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] [2019-10-15 01:14:30,182 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:30,191 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:30,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:30,192 INFO L82 PathProgramCache]: Analyzing trace with hash -468346555, now seen corresponding path program 1 times [2019-10-15 01:14:30,192 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:30,192 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542466473] [2019-10-15 01:14:30,192 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:30,192 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:30,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:30,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542466473] [2019-10-15 01:14:30,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038186976] [2019-10-15 01:14:30,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:31,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:31,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:31,525 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:31,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:31,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:32,022 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:32,023 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:32,023 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-15 01:14:32,023 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656490642] [2019-10-15 01:14:32,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:32,026 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:32,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:32,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:32,027 INFO L87 Difference]: Start difference. First operand 682 states and 939 transitions. Second operand 7 states. [2019-10-15 01:14:33,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:33,505 INFO L93 Difference]: Finished difference Result 1315 states and 1826 transitions. [2019-10-15 01:14:33,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:33,506 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2019-10-15 01:14:33,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:33,511 INFO L225 Difference]: With dead ends: 1315 [2019-10-15 01:14:33,511 INFO L226 Difference]: Without dead ends: 684 [2019-10-15 01:14:33,514 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 [2019-10-15 01:14:33,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2019-10-15 01:14:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2019-10-15 01:14:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2019-10-15 01:14:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 942 transitions. [2019-10-15 01:14:33,539 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 942 transitions. Word has length 229 [2019-10-15 01:14:33,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:33,540 INFO L462 AbstractCegarLoop]: Abstraction has 684 states and 942 transitions. [2019-10-15 01:14:33,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:33,540 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 942 transitions. [2019-10-15 01:14:33,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-15 01:14:33,544 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:33,544 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] [2019-10-15 01:14:33,751 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:33,752 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:33,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:33,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1040586273, now seen corresponding path program 1 times [2019-10-15 01:14:33,753 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:33,754 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241229260] [2019-10-15 01:14:33,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:33,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:33,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:34,099 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:34,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241229260] [2019-10-15 01:14:34,100 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830798013] [2019-10-15 01:14:34,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:34,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 3181 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:34,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:34,983 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:35,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:35,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:35,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:35,632 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:35,633 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:35,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-15 01:14:35,633 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012534694] [2019-10-15 01:14:35,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:35,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:35,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:35,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:14:35,635 INFO L87 Difference]: Start difference. First operand 684 states and 942 transitions. Second operand 16 states. [2019-10-15 01:14:38,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:38,436 INFO L93 Difference]: Finished difference Result 1319 states and 1826 transitions. [2019-10-15 01:14:38,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:38,436 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 230 [2019-10-15 01:14:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:38,444 INFO L225 Difference]: With dead ends: 1319 [2019-10-15 01:14:38,445 INFO L226 Difference]: Without dead ends: 696 [2019-10-15 01:14:38,450 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 449 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:14:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2019-10-15 01:14:38,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 694. [2019-10-15 01:14:38,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-10-15 01:14:38,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 953 transitions. [2019-10-15 01:14:38,484 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 953 transitions. Word has length 230 [2019-10-15 01:14:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:38,486 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 953 transitions. [2019-10-15 01:14:38,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:38,486 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 953 transitions. [2019-10-15 01:14:38,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-15 01:14:38,491 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:38,491 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] [2019-10-15 01:14:38,701 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:38,702 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:38,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:38,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1355231744, now seen corresponding path program 2 times [2019-10-15 01:14:38,703 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:38,704 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514200139] [2019-10-15 01:14:38,704 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:38,704 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:38,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:39,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514200139] [2019-10-15 01:14:39,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224926695] [2019-10-15 01:14:39,127 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 [2019-10-15 01:14:39,756 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:14:39,756 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:39,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:14:39,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:14:39,975 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:40,473 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:40,473 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-15 01:14:40,474 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041145850] [2019-10-15 01:14:40,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:14:40,475 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:40,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:14:40,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:14:40,476 INFO L87 Difference]: Start difference. First operand 694 states and 953 transitions. Second operand 14 states. [2019-10-15 01:14:43,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:43,167 INFO L93 Difference]: Finished difference Result 2349 states and 3265 transitions. [2019-10-15 01:14:43,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:14:43,168 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 231 [2019-10-15 01:14:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:43,189 INFO L225 Difference]: With dead ends: 2349 [2019-10-15 01:14:43,189 INFO L226 Difference]: Without dead ends: 2014 [2019-10-15 01:14:43,193 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 460 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-15 01:14:43,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2019-10-15 01:14:43,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1631. [2019-10-15 01:14:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1631 states. [2019-10-15 01:14:43,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2308 transitions. [2019-10-15 01:14:43,299 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2308 transitions. Word has length 231 [2019-10-15 01:14:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:43,301 INFO L462 AbstractCegarLoop]: Abstraction has 1631 states and 2308 transitions. [2019-10-15 01:14:43,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:14:43,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2308 transitions. [2019-10-15 01:14:43,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-15 01:14:43,315 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:43,315 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] [2019-10-15 01:14:43,522 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:43,523 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:43,524 INFO L82 PathProgramCache]: Analyzing trace with hash 2088411479, now seen corresponding path program 1 times [2019-10-15 01:14:43,524 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:43,525 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691135082] [2019-10-15 01:14:43,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:43,525 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:43,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:43,911 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691135082] [2019-10-15 01:14:43,911 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221760945] [2019-10-15 01:14:43,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:44,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 3183 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:44,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:44,806 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:44,806 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:45,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:45,234 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:45,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:45,453 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:45,454 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:45,454 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-15 01:14:45,454 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364212781] [2019-10-15 01:14:45,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:14:45,456 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:45,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:14:45,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:45,457 INFO L87 Difference]: Start difference. First operand 1631 states and 2308 transitions. Second operand 15 states. [2019-10-15 01:14:48,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:48,249 INFO L93 Difference]: Finished difference Result 3156 states and 4492 transitions. [2019-10-15 01:14:48,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:48,250 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 232 [2019-10-15 01:14:48,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:48,262 INFO L225 Difference]: With dead ends: 3156 [2019-10-15 01:14:48,262 INFO L226 Difference]: Without dead ends: 1637 [2019-10-15 01:14:48,268 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 453 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:14:48,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2019-10-15 01:14:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1631. [2019-10-15 01:14:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1631 states. [2019-10-15 01:14:48,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2306 transitions. [2019-10-15 01:14:48,369 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2306 transitions. Word has length 232 [2019-10-15 01:14:48,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:48,369 INFO L462 AbstractCegarLoop]: Abstraction has 1631 states and 2306 transitions. [2019-10-15 01:14:48,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:14:48,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2306 transitions. [2019-10-15 01:14:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-15 01:14:48,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:48,377 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] [2019-10-15 01:14:48,587 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:48,587 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:48,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:48,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1296609019, now seen corresponding path program 1 times [2019-10-15 01:14:48,589 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:48,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430204083] [2019-10-15 01:14:48,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:48,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:48,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:49,153 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430204083] [2019-10-15 01:14:49,154 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590420085] [2019-10-15 01:14:49,154 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 [2019-10-15 01:14:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:49,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 3184 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:49,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:50,069 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:50,070 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:50,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:50,417 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:50,490 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:14:50,490 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:50,490 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-15 01:14:50,491 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20810247] [2019-10-15 01:14:50,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:50,492 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:50,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:50,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:50,493 INFO L87 Difference]: Start difference. First operand 1631 states and 2306 transitions. Second operand 12 states. [2019-10-15 01:14:52,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:52,013 INFO L93 Difference]: Finished difference Result 2591 states and 3618 transitions. [2019-10-15 01:14:52,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:52,014 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 233 [2019-10-15 01:14:52,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:52,022 INFO L225 Difference]: With dead ends: 2591 [2019-10-15 01:14:52,022 INFO L226 Difference]: Without dead ends: 1361 [2019-10-15 01:14:52,027 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 460 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:52,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2019-10-15 01:14:52,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2019-10-15 01:14:52,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2019-10-15 01:14:52,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1882 transitions. [2019-10-15 01:14:52,085 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1882 transitions. Word has length 233 [2019-10-15 01:14:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:52,085 INFO L462 AbstractCegarLoop]: Abstraction has 1361 states and 1882 transitions. [2019-10-15 01:14:52,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1882 transitions. [2019-10-15 01:14:52,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-15 01:14:52,091 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:52,092 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] [2019-10-15 01:14:52,300 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:52,300 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:52,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:52,301 INFO L82 PathProgramCache]: Analyzing trace with hash -589990004, now seen corresponding path program 1 times [2019-10-15 01:14:52,301 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:52,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375407649] [2019-10-15 01:14:52,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:52,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:52,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:52,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375407649] [2019-10-15 01:14:52,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537458384] [2019-10-15 01:14:52,462 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