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_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:13:50,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:13:50,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:13:50,273 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:13:50,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:13:50,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:13:50,276 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:13:50,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:13:50,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:13:50,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:13:50,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:13:50,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:13:50,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:13:50,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:13:50,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:13:50,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:13:50,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:13:50,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:13:50,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:13:50,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:13:50,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:13:50,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:13:50,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:13:50,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:13:50,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:13:50,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:13:50,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:13:50,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:13:50,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:13:50,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:13:50,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:13:50,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:13:50,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:13:50,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:13:50,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:13:50,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:13:50,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:13:50,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:13:50,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:13:50,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:13:50,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:13:50,328 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 01:13:50,349 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:13:50,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:13:50,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:13:50,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:13:50,351 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:13:50,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:13:50,354 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:13:50,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:13:50,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:13:50,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:13:50,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:13:50,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:13:50,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:13:50,355 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:13:50,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:13:50,355 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:13:50,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:13:50,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:13:50,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:13:50,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:13:50,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:13:50,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:13:50,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:13:50,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:13:50,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:13:50,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:13:50,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:13:50,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:13:50,361 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 01:13:50,646 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:13:50,659 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:13:50,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:13:50,667 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:13:50,668 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:13:50,668 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product25.cil.c [2019-10-15 01:13:50,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/035e88c5d/4414f09ed6c34342b4406454cea399e2/FLAG179283436 [2019-10-15 01:13:51,448 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:13:51,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product25.cil.c [2019-10-15 01:13:51,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/035e88c5d/4414f09ed6c34342b4406454cea399e2/FLAG179283436 [2019-10-15 01:13:51,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/035e88c5d/4414f09ed6c34342b4406454cea399e2 [2019-10-15 01:13:51,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:13:51,621 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:13:51,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:51,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:13:51,625 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:13:51,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:51" (1/1) ... [2019-10-15 01:13:51,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605515df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:51, skipping insertion in model container [2019-10-15 01:13:51,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:13:51" (1/1) ... [2019-10-15 01:13:51,635 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:13:51,720 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:13:52,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:52,553 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:13:52,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:13:52,741 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:13:52,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:52 WrapperNode [2019-10-15 01:13:52,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:13:52,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:13:52,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:13:52,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:13:52,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:52" (1/1) ... [2019-10-15 01:13:52,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:52" (1/1) ... [2019-10-15 01:13:52,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:52" (1/1) ... [2019-10-15 01:13:52,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:52" (1/1) ... [2019-10-15 01:13:52,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:52" (1/1) ... [2019-10-15 01:13:52,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:52" (1/1) ... [2019-10-15 01:13:52,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:52" (1/1) ... [2019-10-15 01:13:52,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:13:52,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:13:52,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:13:52,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:13:52,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:52" (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 01:13:52,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:13:52,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:13:52,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:52,996 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:13:52,997 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:13:52,998 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-15 01:13:52,998 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:13:52,999 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:13:52,999 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:13:53,000 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:13:53,000 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:13:53,001 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:13:53,001 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:13:53,002 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:13:53,002 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:13:53,002 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:13:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:13:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:13:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:13:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:13:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:13:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:13:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:13:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:13:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:13:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:13:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:13:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:13:53,008 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:13:53,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:13:53,008 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:13:53,008 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:13:53,008 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:13:53,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:13:53,009 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:13:53,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:13:53,010 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:13:53,010 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:13:53,010 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:13:53,010 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:13:53,010 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:13:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:13:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:13:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:13:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:13:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:13:53,011 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:13:53,012 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:13:53,012 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:13:53,012 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:13:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:13:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:13:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-15 01:13:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:13:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:13:53,013 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:13:53,014 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:13:53,014 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:13:53,014 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:13:53,014 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:13:53,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:13:53,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:13:53,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:13:53,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:13:53,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:13:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:13:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:13:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:13:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:13:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:13:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:13:53,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:13:53,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:13:53,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:13:53,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:13:53,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:13:53,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:13:53,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:13:53,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:13:53,019 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:13:53,019 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:13:53,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:53,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:53,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:53,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:53,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:13:53,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:13:53,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:13:53,022 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:13:53,022 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:13:53,022 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:13:53,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:53,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:13:53,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:53,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:13:53,023 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:13:53,023 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:13:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:13:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:13:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:13:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:13:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:13:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:13:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:13:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:13:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:13:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:13:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:13:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:13:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:13:53,025 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:13:53,026 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:13:53,026 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:13:53,026 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:13:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:13:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:13:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:13:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:13:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:13:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:13:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:13:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:13:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:13:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:13:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:13:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:13:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:13:53,030 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:13:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:13:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:13:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:13:53,031 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:13:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:13:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:13:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:13:53,032 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:13:53,033 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:13:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:13:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:13:53,037 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:13:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:13:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:13:53,038 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:13:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:13:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:13:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:13:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:13:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:13:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:13:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:13:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:13:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:13:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:13:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:13:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:13:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:13:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-15 01:13:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:13:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:13:53,051 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:13:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:13:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:13:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:13:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:13:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:13:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:13:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:13:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:13:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:13:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:13:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:13:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:13:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:13:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:13:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:13:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:13:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:13:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:13:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:13:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:13:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:13:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:13:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:13:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:13:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-15 01:13:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:13:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:13:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:13:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:13:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:13:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:13:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:13:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:13:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:13:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:13:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:13:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:13:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:13:53,056 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:13:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:13:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:13:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:13:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:13:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:13:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:13:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:13:53,057 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:13:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:13:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:13:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:13:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:13:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:13:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:13:53,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:13:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:13:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:13:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:13:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:13:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:13:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:13:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:13:53,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:13:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:13:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:13:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:13:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:13:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:13:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:13:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:13:53,060 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:13:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:13:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:13:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:13:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:13:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:13:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:13:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:13:53,061 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:13:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:13:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:13:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:13:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:13:53,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:13:55,144 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:13:55,144 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:13:55,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:55 BoogieIcfgContainer [2019-10-15 01:13:55,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:13:55,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:13:55,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:13:55,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:13:55,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:13:51" (1/3) ... [2019-10-15 01:13:55,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f2e5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:55, skipping insertion in model container [2019-10-15 01:13:55,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:13:52" (2/3) ... [2019-10-15 01:13:55,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f2e5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:13:55, skipping insertion in model container [2019-10-15 01:13:55,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:13:55" (3/3) ... [2019-10-15 01:13:55,156 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product25.cil.c [2019-10-15 01:13:55,169 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:13:55,181 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:13:55,193 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:13:55,226 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:13:55,226 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:13:55,226 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:13:55,226 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:13:55,227 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:13:55,227 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:13:55,227 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:13:55,227 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:13:55,256 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states. [2019-10-15 01:13:55,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-15 01:13:55,279 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:55,280 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:55,282 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:55,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:55,288 INFO L82 PathProgramCache]: Analyzing trace with hash -458917487, now seen corresponding path program 1 times [2019-10-15 01:13:55,298 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:55,299 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728120405] [2019-10-15 01:13:55,299 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:55,299 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:55,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:55,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728120405] [2019-10-15 01:13:55,962 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:55,963 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:13:55,963 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063816224] [2019-10-15 01:13:55,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:13:55,970 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:55,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:13:55,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:13:55,988 INFO L87 Difference]: Start difference. First operand 589 states. Second operand 2 states. [2019-10-15 01:13:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:56,068 INFO L93 Difference]: Finished difference Result 864 states and 1168 transitions. [2019-10-15 01:13:56,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:13:56,070 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 188 [2019-10-15 01:13:56,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:56,104 INFO L225 Difference]: With dead ends: 864 [2019-10-15 01:13:56,104 INFO L226 Difference]: Without dead ends: 560 [2019-10-15 01:13:56,111 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 01:13:56,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2019-10-15 01:13:56,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2019-10-15 01:13:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2019-10-15 01:13:56,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 761 transitions. [2019-10-15 01:13:56,214 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 761 transitions. Word has length 188 [2019-10-15 01:13:56,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:56,217 INFO L462 AbstractCegarLoop]: Abstraction has 560 states and 761 transitions. [2019-10-15 01:13:56,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:13:56,218 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 761 transitions. [2019-10-15 01:13:56,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 01:13:56,224 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:56,225 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:56,225 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:56,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:56,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1174707760, now seen corresponding path program 1 times [2019-10-15 01:13:56,226 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:56,226 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538175370] [2019-10-15 01:13:56,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:56,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:56,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:56,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538175370] [2019-10-15 01:13:56,572 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:56,573 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:56,573 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777939852] [2019-10-15 01:13:56,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:56,580 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:56,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:56,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:56,581 INFO L87 Difference]: Start difference. First operand 560 states and 761 transitions. Second operand 3 states. [2019-10-15 01:13:56,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:56,676 INFO L93 Difference]: Finished difference Result 847 states and 1130 transitions. [2019-10-15 01:13:56,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:56,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2019-10-15 01:13:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:56,691 INFO L225 Difference]: With dead ends: 847 [2019-10-15 01:13:56,692 INFO L226 Difference]: Without dead ends: 563 [2019-10-15 01:13:56,696 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 01:13:56,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2019-10-15 01:13:56,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 562. [2019-10-15 01:13:56,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2019-10-15 01:13:56,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 763 transitions. [2019-10-15 01:13:56,760 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 763 transitions. Word has length 189 [2019-10-15 01:13:56,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:56,761 INFO L462 AbstractCegarLoop]: Abstraction has 562 states and 763 transitions. [2019-10-15 01:13:56,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:56,761 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 763 transitions. [2019-10-15 01:13:56,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-15 01:13:56,770 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:56,770 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:56,771 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:56,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:56,771 INFO L82 PathProgramCache]: Analyzing trace with hash -980165084, now seen corresponding path program 1 times [2019-10-15 01:13:56,771 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:56,772 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58472494] [2019-10-15 01:13:56,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:56,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:56,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:13:57,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58472494] [2019-10-15 01:13:57,020 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:57,020 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:13:57,020 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764250092] [2019-10-15 01:13:57,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:13:57,025 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:57,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:13:57,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:13:57,026 INFO L87 Difference]: Start difference. First operand 562 states and 763 transitions. Second operand 3 states. [2019-10-15 01:13:57,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:57,073 INFO L93 Difference]: Finished difference Result 1102 states and 1527 transitions. [2019-10-15 01:13:57,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:13:57,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2019-10-15 01:13:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:57,079 INFO L225 Difference]: With dead ends: 1102 [2019-10-15 01:13:57,079 INFO L226 Difference]: Without dead ends: 605 [2019-10-15 01:13:57,081 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 01:13:57,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-15 01:13:57,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 604. [2019-10-15 01:13:57,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2019-10-15 01:13:57,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 835 transitions. [2019-10-15 01:13:57,115 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 835 transitions. Word has length 195 [2019-10-15 01:13:57,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:57,115 INFO L462 AbstractCegarLoop]: Abstraction has 604 states and 835 transitions. [2019-10-15 01:13:57,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:13:57,116 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 835 transitions. [2019-10-15 01:13:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-15 01:13:57,120 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:57,120 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:13:57,121 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:57,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:57,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1952461671, now seen corresponding path program 1 times [2019-10-15 01:13:57,121 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:57,121 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989013039] [2019-10-15 01:13:57,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:57,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:57,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:57,566 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989013039] [2019-10-15 01:13:57,567 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:57,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:13:57,575 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300088983] [2019-10-15 01:13:57,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:13:57,578 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:57,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:13:57,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:57,579 INFO L87 Difference]: Start difference. First operand 604 states and 835 transitions. Second operand 8 states. [2019-10-15 01:13:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:13:57,697 INFO L93 Difference]: Finished difference Result 875 states and 1192 transitions. [2019-10-15 01:13:57,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:13:57,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2019-10-15 01:13:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:13:57,705 INFO L225 Difference]: With dead ends: 875 [2019-10-15 01:13:57,705 INFO L226 Difference]: Without dead ends: 604 [2019-10-15 01:13:57,707 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:13:57,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2019-10-15 01:13:57,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2019-10-15 01:13:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2019-10-15 01:13:57,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 834 transitions. [2019-10-15 01:13:57,760 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 834 transitions. Word has length 196 [2019-10-15 01:13:57,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:13:57,762 INFO L462 AbstractCegarLoop]: Abstraction has 604 states and 834 transitions. [2019-10-15 01:13:57,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:13:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 834 transitions. [2019-10-15 01:13:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-15 01:13:57,769 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:13:57,769 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:13:57,770 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:13:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:13:57,770 INFO L82 PathProgramCache]: Analyzing trace with hash 988756676, now seen corresponding path program 1 times [2019-10-15 01:13:57,770 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:13:57,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261172876] [2019-10-15 01:13:57,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:57,772 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:13:57,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:13:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:13:58,082 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:13:58,083 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261172876] [2019-10-15 01:13:58,083 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:13:58,084 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:13:58,084 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180210017] [2019-10-15 01:13:58,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:13:58,085 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:13:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:13:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:13:58,087 INFO L87 Difference]: Start difference. First operand 604 states and 834 transitions. Second operand 7 states. [2019-10-15 01:14:01,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:01,084 INFO L93 Difference]: Finished difference Result 1175 states and 1588 transitions. [2019-10-15 01:14:01,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:01,085 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2019-10-15 01:14:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:01,091 INFO L225 Difference]: With dead ends: 1175 [2019-10-15 01:14:01,091 INFO L226 Difference]: Without dead ends: 900 [2019-10-15 01:14:01,093 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:14:01,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2019-10-15 01:14:01,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 891. [2019-10-15 01:14:01,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2019-10-15 01:14:01,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1211 transitions. [2019-10-15 01:14:01,139 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1211 transitions. Word has length 203 [2019-10-15 01:14:01,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:01,142 INFO L462 AbstractCegarLoop]: Abstraction has 891 states and 1211 transitions. [2019-10-15 01:14:01,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:01,142 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1211 transitions. [2019-10-15 01:14:01,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-15 01:14:01,146 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:01,147 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:14:01,147 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:01,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:01,147 INFO L82 PathProgramCache]: Analyzing trace with hash -866609900, now seen corresponding path program 1 times [2019-10-15 01:14:01,148 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:01,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473070066] [2019-10-15 01:14:01,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:01,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:01,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:01,860 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:14:01,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473070066] [2019-10-15 01:14:01,861 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:01,861 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-15 01:14:01,861 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800234366] [2019-10-15 01:14:01,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-15 01:14:01,862 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:01,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-15 01:14:01,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-10-15 01:14:01,863 INFO L87 Difference]: Start difference. First operand 891 states and 1211 transitions. Second operand 26 states. [2019-10-15 01:14:02,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:02,662 INFO L93 Difference]: Finished difference Result 1582 states and 2143 transitions. [2019-10-15 01:14:02,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 01:14:02,663 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 204 [2019-10-15 01:14:02,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:02,670 INFO L225 Difference]: With dead ends: 1582 [2019-10-15 01:14:02,670 INFO L226 Difference]: Without dead ends: 1016 [2019-10-15 01:14:02,674 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:14:02,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2019-10-15 01:14:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1011. [2019-10-15 01:14:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2019-10-15 01:14:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1368 transitions. [2019-10-15 01:14:02,739 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1368 transitions. Word has length 204 [2019-10-15 01:14:02,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:02,740 INFO L462 AbstractCegarLoop]: Abstraction has 1011 states and 1368 transitions. [2019-10-15 01:14:02,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-15 01:14:02,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1368 transitions. [2019-10-15 01:14:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-15 01:14:02,745 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:02,745 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:02,746 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:02,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:02,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1569565684, now seen corresponding path program 1 times [2019-10-15 01:14:02,746 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:02,746 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626280839] [2019-10-15 01:14:02,747 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:02,747 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:02,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:03,008 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626280839] [2019-10-15 01:14:03,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587441842] [2019-10-15 01:14:03,009 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 01:14:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:03,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:03,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:03,860 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:04,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:04,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:04,428 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:04,554 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:04,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:14:04,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967215015] [2019-10-15 01:14:04,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:04,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:04,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:04,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:14:04,556 INFO L87 Difference]: Start difference. First operand 1011 states and 1368 transitions. Second operand 9 states. [2019-10-15 01:14:05,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:05,924 INFO L93 Difference]: Finished difference Result 2000 states and 2716 transitions. [2019-10-15 01:14:05,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:05,924 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 235 [2019-10-15 01:14:05,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:05,931 INFO L225 Difference]: With dead ends: 2000 [2019-10-15 01:14:05,931 INFO L226 Difference]: Without dead ends: 1025 [2019-10-15 01:14:05,936 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 456 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:14:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2019-10-15 01:14:05,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1025. [2019-10-15 01:14:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2019-10-15 01:14:05,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1386 transitions. [2019-10-15 01:14:05,991 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1386 transitions. Word has length 235 [2019-10-15 01:14:05,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:05,992 INFO L462 AbstractCegarLoop]: Abstraction has 1025 states and 1386 transitions. [2019-10-15 01:14:05,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:05,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1386 transitions. [2019-10-15 01:14:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-15 01:14:05,997 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:05,998 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:06,206 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:06,207 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:06,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:06,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1087527948, now seen corresponding path program 1 times [2019-10-15 01:14:06,208 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:06,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208428137] [2019-10-15 01:14:06,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:06,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:06,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:06,593 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:06,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208428137] [2019-10-15 01:14:06,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016833769] [2019-10-15 01:14:06,594 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 01:14:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:07,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:07,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:07,486 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:14:07,486 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:07,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:07,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:07,949 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:07,949 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:14:07,949 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070559454] [2019-10-15 01:14:07,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:07,950 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:07,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:07,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:07,951 INFO L87 Difference]: Start difference. First operand 1025 states and 1386 transitions. Second operand 7 states. [2019-10-15 01:14:09,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:09,203 INFO L93 Difference]: Finished difference Result 2001 states and 2720 transitions. [2019-10-15 01:14:09,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:09,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2019-10-15 01:14:09,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:09,210 INFO L225 Difference]: With dead ends: 2001 [2019-10-15 01:14:09,210 INFO L226 Difference]: Without dead ends: 1027 [2019-10-15 01:14:09,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 463 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:14:09,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-10-15 01:14:09,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1027. [2019-10-15 01:14:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2019-10-15 01:14:09,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1389 transitions. [2019-10-15 01:14:09,260 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1389 transitions. Word has length 236 [2019-10-15 01:14:09,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:09,261 INFO L462 AbstractCegarLoop]: Abstraction has 1027 states and 1389 transitions. [2019-10-15 01:14:09,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:09,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1389 transitions. [2019-10-15 01:14:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-15 01:14:09,266 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:09,266 INFO L380 BasicCegarLoop]: trace histogram [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, 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 01:14:09,474 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:09,475 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:09,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:09,475 INFO L82 PathProgramCache]: Analyzing trace with hash -165913417, now seen corresponding path program 1 times [2019-10-15 01:14:09,476 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:09,476 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344652594] [2019-10-15 01:14:09,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,477 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:09,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:09,749 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:09,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344652594] [2019-10-15 01:14:09,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245456337] [2019-10-15 01:14:09,750 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 01:14:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:10,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:10,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:10,788 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:11,230 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:11,307 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:11,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-15 01:14:11,499 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:11,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:14:11,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374243257] [2019-10-15 01:14:11,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:11,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:11,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:11,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:14:11,503 INFO L87 Difference]: Start difference. First operand 1027 states and 1389 transitions. Second operand 16 states. [2019-10-15 01:14:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:13,850 INFO L93 Difference]: Finished difference Result 2005 states and 2720 transitions. [2019-10-15 01:14:13,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:13,850 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 237 [2019-10-15 01:14:13,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:13,856 INFO L225 Difference]: With dead ends: 2005 [2019-10-15 01:14:13,856 INFO L226 Difference]: Without dead ends: 1039 [2019-10-15 01:14:13,860 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 460 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:13,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2019-10-15 01:14:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1037. [2019-10-15 01:14:13,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2019-10-15 01:14:13,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1400 transitions. [2019-10-15 01:14:13,907 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1400 transitions. Word has length 237 [2019-10-15 01:14:13,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:13,907 INFO L462 AbstractCegarLoop]: Abstraction has 1037 states and 1400 transitions. [2019-10-15 01:14:13,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1400 transitions. [2019-10-15 01:14:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-15 01:14:13,912 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:13,912 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:14,119 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:14,120 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:14,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:14,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1578129013, now seen corresponding path program 2 times [2019-10-15 01:14:14,121 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:14,122 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976049973] [2019-10-15 01:14:14,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:14,122 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:14,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:14,885 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:14,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976049973] [2019-10-15 01:14:14,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817092070] [2019-10-15 01:14:14,886 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 01:14:15,473 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:14:15,473 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:15,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 2850 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:15,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:15,708 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:16,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:16,141 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:16,287 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:14:16,287 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:16,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-15 01:14:16,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382428807] [2019-10-15 01:14:16,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:16,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:16,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:16,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:14:16,290 INFO L87 Difference]: Start difference. First operand 1037 states and 1400 transitions. Second operand 12 states. [2019-10-15 01:14:17,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:17,662 INFO L93 Difference]: Finished difference Result 1996 states and 2708 transitions. [2019-10-15 01:14:17,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:17,662 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 238 [2019-10-15 01:14:17,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:17,668 INFO L225 Difference]: With dead ends: 1996 [2019-10-15 01:14:17,668 INFO L226 Difference]: Without dead ends: 1039 [2019-10-15 01:14:17,673 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 478 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2019-10-15 01:14:17,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2019-10-15 01:14:17,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1037. [2019-10-15 01:14:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2019-10-15 01:14:17,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1399 transitions. [2019-10-15 01:14:17,719 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1399 transitions. Word has length 238 [2019-10-15 01:14:17,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:17,719 INFO L462 AbstractCegarLoop]: Abstraction has 1037 states and 1399 transitions. [2019-10-15 01:14:17,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:17,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1399 transitions. [2019-10-15 01:14:17,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-10-15 01:14:17,727 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:17,727 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, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:17,937 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:17,938 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:17,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:17,939 INFO L82 PathProgramCache]: Analyzing trace with hash 39756280, now seen corresponding path program 3 times [2019-10-15 01:14:17,939 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:17,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457565979] [2019-10-15 01:14:17,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:17,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:17,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:14:18,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457565979] [2019-10-15 01:14:18,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750980209] [2019-10-15 01:14:18,469 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 01:14:18,981 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:14:18,982 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:18,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 2353 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:18,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:19,408 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:19,409 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:19,755 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:19,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:19,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:14:20,092 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:20,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [29] total 42 [2019-10-15 01:14:20,093 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127399154] [2019-10-15 01:14:20,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:14:20,094 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:20,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:14:20,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1618, Unknown=0, NotChecked=0, Total=1722 [2019-10-15 01:14:20,096 INFO L87 Difference]: Start difference. First operand 1037 states and 1399 transitions. Second operand 15 states. [2019-10-15 01:14:21,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:21,810 INFO L93 Difference]: Finished difference Result 2003 states and 2715 transitions. [2019-10-15 01:14:21,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:21,810 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 239 [2019-10-15 01:14:21,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:21,817 INFO L225 Difference]: With dead ends: 2003 [2019-10-15 01:14:21,817 INFO L226 Difference]: Without dead ends: 1041 [2019-10-15 01:14:21,823 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 475 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=1937, Unknown=0, NotChecked=0, Total=2070 [2019-10-15 01:14:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2019-10-15 01:14:21,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1037. [2019-10-15 01:14:21,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2019-10-15 01:14:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1398 transitions. [2019-10-15 01:14:21,869 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1398 transitions. Word has length 239 [2019-10-15 01:14:21,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:21,870 INFO L462 AbstractCegarLoop]: Abstraction has 1037 states and 1398 transitions. [2019-10-15 01:14:21,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:14:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1398 transitions. [2019-10-15 01:14:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-10-15 01:14:21,877 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:21,878 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:22,092 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:22,093 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:22,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:22,093 INFO L82 PathProgramCache]: Analyzing trace with hash 984049831, now seen corresponding path program 1 times [2019-10-15 01:14:22,094 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:22,094 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937173099] [2019-10-15 01:14:22,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:22,094 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:22,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 01:14:22,709 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937173099] [2019-10-15 01:14:22,709 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79948227] [2019-10-15 01:14:22,709 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 01:14:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:23,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:23,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-15 01:14:23,582 INFO L321 TraceCheckSpWp]: Computing backward predicates...