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 -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product24.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 13:05:26,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 13:05:26,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 13:05:26,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 13:05:26,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 13:05:26,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 13:05:26,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 13:05:26,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 13:05:26,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 13:05:26,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 13:05:26,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 13:05:26,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 13:05:26,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 13:05:26,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 13:05:26,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 13:05:26,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 13:05:26,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 13:05:26,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 13:05:26,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 13:05:26,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 13:05:26,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 13:05:26,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 13:05:26,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 13:05:26,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 13:05:26,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 13:05:26,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 13:05:26,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 13:05:26,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 13:05:26,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 13:05:26,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 13:05:26,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 13:05:26,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 13:05:26,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 13:05:26,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 13:05:26,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 13:05:26,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 13:05:26,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 13:05:26,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 13:05:26,201 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 13:05:26,202 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 13:05:26,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 13:05:26,203 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 [2019-10-02 13:05:26,219 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 13:05:26,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 13:05:26,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 13:05:26,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 13:05:26,221 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 13:05:26,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 13:05:26,221 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 13:05:26,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 13:05:26,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 13:05:26,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 13:05:26,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 13:05:26,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 13:05:26,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 13:05:26,223 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 13:05:26,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 13:05:26,223 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 13:05:26,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 13:05:26,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 13:05:26,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 13:05:26,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 13:05:26,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 13:05:26,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 13:05:26,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 13:05:26,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 13:05:26,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 13:05:26,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 13:05:26,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 13:05:26,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 13:05:26,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 13:05:26,257 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 13:05:26,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 13:05:26,274 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 13:05:26,276 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 13:05:26,276 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 13:05:26,277 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product24.cil.c [2019-10-02 13:05:26,341 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de67b612c/71e82e15e2e94ee6afbe0ac2e606d8ee/FLAGc4db5f1e4 [2019-10-02 13:05:26,984 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 13:05:26,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product24.cil.c [2019-10-02 13:05:27,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de67b612c/71e82e15e2e94ee6afbe0ac2e606d8ee/FLAGc4db5f1e4 [2019-10-02 13:05:27,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de67b612c/71e82e15e2e94ee6afbe0ac2e606d8ee [2019-10-02 13:05:27,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 13:05:27,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 13:05:27,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 13:05:27,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 13:05:27,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 13:05:27,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 01:05:27" (1/1) ... [2019-10-02 13:05:27,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249a5678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:05:27, skipping insertion in model container [2019-10-02 13:05:27,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 01:05:27" (1/1) ... [2019-10-02 13:05:27,223 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 13:05:27,320 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 13:05:28,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 13:05:28,110 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 13:05:28,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 13:05:28,342 INFO L192 MainTranslator]: Completed translation [2019-10-02 13:05:28,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:05:28 WrapperNode [2019-10-02 13:05:28,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 13:05:28,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 13:05:28,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 13:05:28,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 13:05:28,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:05:28" (1/1) ... [2019-10-02 13:05:28,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:05:28" (1/1) ... [2019-10-02 13:05:28,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:05:28" (1/1) ... [2019-10-02 13:05:28,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:05:28" (1/1) ... [2019-10-02 13:05:28,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:05:28" (1/1) ... [2019-10-02 13:05:28,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:05:28" (1/1) ... [2019-10-02 13:05:28,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:05:28" (1/1) ... [2019-10-02 13:05:28,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 13:05:28,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 13:05:28,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 13:05:28,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 13:05:28,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:05:28" (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 [2019-10-02 13:05:28,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 13:05:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 13:05:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-02 13:05:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-02 13:05:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-02 13:05:28,605 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-02 13:05:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-02 13:05:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-02 13:05:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-02 13:05:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-02 13:05:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-02 13:05:28,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-02 13:05:28,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-02 13:05:28,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-02 13:05:28,607 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-02 13:05:28,607 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-02 13:05:28,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-02 13:05:28,608 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-02 13:05:28,608 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-02 13:05:28,609 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-02 13:05:28,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-02 13:05:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-02 13:05:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-02 13:05:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-02 13:05:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-02 13:05:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-02 13:05:28,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-02 13:05:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-02 13:05:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-02 13:05:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-02 13:05:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-02 13:05:28,611 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-02 13:05:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-02 13:05:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-02 13:05:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-02 13:05:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-02 13:05:28,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-02 13:05:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-02 13:05:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-02 13:05:28,613 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-02 13:05:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-02 13:05:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-02 13:05:28,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-02 13:05:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-02 13:05:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-02 13:05:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-02 13:05:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-02 13:05:28,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-02 13:05:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-02 13:05:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-02 13:05:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-02 13:05:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-02 13:05:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-02 13:05:28,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-02 13:05:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-02 13:05:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-02 13:05:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-02 13:05:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-02 13:05:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-02 13:05:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-02 13:05:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-02 13:05:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-02 13:05:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-02 13:05:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-02 13:05:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-02 13:05:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-02 13:05:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-02 13:05:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-02 13:05:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-02 13:05:28,619 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-02 13:05:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-02 13:05:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-02 13:05:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-02 13:05:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-02 13:05:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-02 13:05:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-02 13:05:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-02 13:05:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-02 13:05:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-02 13:05:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-02 13:05:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-02 13:05:28,622 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-02 13:05:28,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-02 13:05:28,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-02 13:05:28,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-02 13:05:28,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-02 13:05:28,623 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-02 13:05:28,623 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-02 13:05:28,623 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-02 13:05:28,623 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-02 13:05:28,623 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-02 13:05:28,623 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 13:05:28,624 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-02 13:05:28,624 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-02 13:05:28,624 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-02 13:05:28,624 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-02 13:05:28,624 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-02 13:05:28,624 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-02 13:05:28,624 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-02 13:05:28,625 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-02 13:05:28,625 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-02 13:05:28,625 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-02 13:05:28,625 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-02 13:05:28,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-02 13:05:28,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-02 13:05:28,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-02 13:05:28,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-02 13:05:28,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-02 13:05:28,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-02 13:05:28,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-02 13:05:28,626 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-02 13:05:28,626 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-02 13:05:28,626 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-02 13:05:28,627 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-02 13:05:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 13:05:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 13:05:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-02 13:05:28,627 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-02 13:05:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-02 13:05:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-02 13:05:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-02 13:05:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-02 13:05:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-02 13:05:28,628 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-02 13:05:28,629 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-02 13:05:28,629 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-02 13:05:28,629 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-02 13:05:28,629 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-02 13:05:28,629 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-02 13:05:28,629 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-02 13:05:28,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 13:05:28,630 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-02 13:05:28,630 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-02 13:05:28,630 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-02 13:05:28,630 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-02 13:05:28,630 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-02 13:05:28,630 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-02 13:05:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-02 13:05:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-02 13:05:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-02 13:05:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-02 13:05:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-02 13:05:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-02 13:05:28,631 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-02 13:05:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-02 13:05:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-02 13:05:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-02 13:05:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-02 13:05:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-02 13:05:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-02 13:05:28,632 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-02 13:05:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-02 13:05:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-02 13:05:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-02 13:05:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-02 13:05:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-02 13:05:28,633 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-02 13:05:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-02 13:05:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-02 13:05:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-02 13:05:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-02 13:05:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-02 13:05:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-02 13:05:28,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-02 13:05:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-02 13:05:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-02 13:05:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-02 13:05:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-02 13:05:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-02 13:05:28,635 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-02 13:05:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-02 13:05:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-02 13:05:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-02 13:05:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-02 13:05:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-02 13:05:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-02 13:05:28,636 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-02 13:05:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-02 13:05:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-02 13:05:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-02 13:05:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-02 13:05:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-02 13:05:28,637 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-02 13:05:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-02 13:05:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-02 13:05:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-02 13:05:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-02 13:05:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-02 13:05:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-02 13:05:28,638 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-02 13:05:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-02 13:05:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-02 13:05:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-02 13:05:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-02 13:05:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-02 13:05:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-02 13:05:28,639 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-02 13:05:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-02 13:05:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-02 13:05:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-02 13:05:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-02 13:05:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-02 13:05:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-02 13:05:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-02 13:05:28,640 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-02 13:05:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-02 13:05:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-02 13:05:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-02 13:05:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-02 13:05:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-02 13:05:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-02 13:05:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-02 13:05:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-02 13:05:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-02 13:05:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-02 13:05:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-02 13:05:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-02 13:05:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 13:05:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-02 13:05:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-02 13:05:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-02 13:05:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-02 13:05:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-02 13:05:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-02 13:05:28,643 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 13:05:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 13:05:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-02 13:05:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 13:05:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 13:05:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 13:05:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 13:05:28,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-02 13:05:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 13:05:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-02 13:05:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-02 13:05:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 13:05:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-02 13:05:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-02 13:05:28,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-02 13:05:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-02 13:05:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 13:05:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-02 13:05:28,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 13:05:30,800 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 13:05:30,801 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-02 13:05:30,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 01:05:30 BoogieIcfgContainer [2019-10-02 13:05:30,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 13:05:30,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 13:05:30,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 13:05:30,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 13:05:30,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 01:05:27" (1/3) ... [2019-10-02 13:05:30,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a83803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 01:05:30, skipping insertion in model container [2019-10-02 13:05:30,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:05:28" (2/3) ... [2019-10-02 13:05:30,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a83803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 01:05:30, skipping insertion in model container [2019-10-02 13:05:30,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 01:05:30" (3/3) ... [2019-10-02 13:05:30,812 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product24.cil.c [2019-10-02 13:05:30,824 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 13:05:30,836 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 13:05:30,856 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 13:05:30,896 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 13:05:30,897 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 13:05:30,897 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 13:05:30,898 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 13:05:30,898 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 13:05:30,898 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 13:05:30,898 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 13:05:30,898 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 13:05:30,898 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 13:05:30,932 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states. [2019-10-02 13:05:30,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-02 13:05:30,954 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:30,955 INFO L411 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] [2019-10-02 13:05:30,958 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:30,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:30,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1375870592, now seen corresponding path program 1 times [2019-10-02 13:05:30,967 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:30,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:31,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:31,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:31,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-02 13:05:31,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:05:31,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 13:05:31,704 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 13:05:31,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 13:05:31,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 13:05:31,725 INFO L87 Difference]: Start difference. First operand 528 states. Second operand 2 states. [2019-10-02 13:05:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:05:31,805 INFO L93 Difference]: Finished difference Result 787 states and 1034 transitions. [2019-10-02 13:05:31,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 13:05:31,807 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 181 [2019-10-02 13:05:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:05:31,844 INFO L225 Difference]: With dead ends: 787 [2019-10-02 13:05:31,844 INFO L226 Difference]: Without dead ends: 505 [2019-10-02 13:05:31,858 INFO L640 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 [2019-10-02 13:05:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2019-10-02 13:05:32,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2019-10-02 13:05:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-10-02 13:05:32,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 666 transitions. [2019-10-02 13:05:32,023 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 666 transitions. Word has length 181 [2019-10-02 13:05:32,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:05:32,027 INFO L475 AbstractCegarLoop]: Abstraction has 505 states and 666 transitions. [2019-10-02 13:05:32,027 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 13:05:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 666 transitions. [2019-10-02 13:05:32,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-02 13:05:32,047 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:32,048 INFO L411 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] [2019-10-02 13:05:32,048 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:32,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:32,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1672836718, now seen corresponding path program 1 times [2019-10-02 13:05:32,050 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:32,051 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:32,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:32,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:32,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-02 13:05:32,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:05:32,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 13:05:32,432 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 13:05:32,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 13:05:32,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:05:32,433 INFO L87 Difference]: Start difference. First operand 505 states and 666 transitions. Second operand 3 states. [2019-10-02 13:05:32,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:05:32,515 INFO L93 Difference]: Finished difference Result 770 states and 998 transitions. [2019-10-02 13:05:32,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 13:05:32,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2019-10-02 13:05:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:05:32,522 INFO L225 Difference]: With dead ends: 770 [2019-10-02 13:05:32,522 INFO L226 Difference]: Without dead ends: 508 [2019-10-02 13:05:32,524 INFO L640 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 [2019-10-02 13:05:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2019-10-02 13:05:32,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2019-10-02 13:05:32,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2019-10-02 13:05:32,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 668 transitions. [2019-10-02 13:05:32,550 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 668 transitions. Word has length 182 [2019-10-02 13:05:32,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:05:32,551 INFO L475 AbstractCegarLoop]: Abstraction has 507 states and 668 transitions. [2019-10-02 13:05:32,551 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 13:05:32,551 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 668 transitions. [2019-10-02 13:05:32,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-02 13:05:32,563 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:32,563 INFO L411 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, 1, 1, 1, 1, 1] [2019-10-02 13:05:32,568 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:32,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:32,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1352158941, now seen corresponding path program 1 times [2019-10-02 13:05:32,569 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:32,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:32,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:32,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:32,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-02 13:05:32,888 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:05:32,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 13:05:32,889 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 13:05:32,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 13:05:32,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:05:32,892 INFO L87 Difference]: Start difference. First operand 507 states and 668 transitions. Second operand 3 states. [2019-10-02 13:05:32,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:05:32,963 INFO L93 Difference]: Finished difference Result 992 states and 1337 transitions. [2019-10-02 13:05:32,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 13:05:32,964 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-10-02 13:05:32,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:05:32,976 INFO L225 Difference]: With dead ends: 992 [2019-10-02 13:05:32,977 INFO L226 Difference]: Without dead ends: 550 [2019-10-02 13:05:32,979 INFO L640 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 [2019-10-02 13:05:32,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2019-10-02 13:05:33,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 549. [2019-10-02 13:05:33,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2019-10-02 13:05:33,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 740 transitions. [2019-10-02 13:05:33,045 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 740 transitions. Word has length 194 [2019-10-02 13:05:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:05:33,046 INFO L475 AbstractCegarLoop]: Abstraction has 549 states and 740 transitions. [2019-10-02 13:05:33,047 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 13:05:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 740 transitions. [2019-10-02 13:05:33,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-02 13:05:33,061 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:33,061 INFO L411 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, 1, 1, 1, 1, 1, 1] [2019-10-02 13:05:33,062 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:33,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:33,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1151159217, now seen corresponding path program 1 times [2019-10-02 13:05:33,063 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:33,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:33,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:33,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:33,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-02 13:05:33,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:05:33,338 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 13:05:33,338 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 13:05:33,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 13:05:33,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 13:05:33,340 INFO L87 Difference]: Start difference. First operand 549 states and 740 transitions. Second operand 3 states. [2019-10-02 13:05:33,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:05:33,397 INFO L93 Difference]: Finished difference Result 1115 states and 1548 transitions. [2019-10-02 13:05:33,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 13:05:33,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2019-10-02 13:05:33,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:05:33,413 INFO L225 Difference]: With dead ends: 1115 [2019-10-02 13:05:33,414 INFO L226 Difference]: Without dead ends: 631 [2019-10-02 13:05:33,416 INFO L640 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 [2019-10-02 13:05:33,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2019-10-02 13:05:33,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 630. [2019-10-02 13:05:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-02 13:05:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 878 transitions. [2019-10-02 13:05:33,454 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 878 transitions. Word has length 195 [2019-10-02 13:05:33,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:05:33,456 INFO L475 AbstractCegarLoop]: Abstraction has 630 states and 878 transitions. [2019-10-02 13:05:33,456 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 13:05:33,456 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 878 transitions. [2019-10-02 13:05:33,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-02 13:05:33,461 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:33,461 INFO L411 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] [2019-10-02 13:05:33,462 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:33,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:33,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1181294748, now seen corresponding path program 1 times [2019-10-02 13:05:33,463 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:33,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:33,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:33,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:33,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-02 13:05:33,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:05:33,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-02 13:05:33,792 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 13:05:33,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 13:05:33,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-02 13:05:33,793 INFO L87 Difference]: Start difference. First operand 630 states and 878 transitions. Second operand 8 states. [2019-10-02 13:05:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:05:33,869 INFO L93 Difference]: Finished difference Result 879 states and 1195 transitions. [2019-10-02 13:05:33,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 13:05:33,870 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 198 [2019-10-02 13:05:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:05:33,874 INFO L225 Difference]: With dead ends: 879 [2019-10-02 13:05:33,875 INFO L226 Difference]: Without dead ends: 630 [2019-10-02 13:05:33,876 INFO L640 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 [2019-10-02 13:05:33,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-02 13:05:33,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-02 13:05:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-02 13:05:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 877 transitions. [2019-10-02 13:05:33,912 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 877 transitions. Word has length 198 [2019-10-02 13:05:33,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:05:33,915 INFO L475 AbstractCegarLoop]: Abstraction has 630 states and 877 transitions. [2019-10-02 13:05:33,915 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 13:05:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 877 transitions. [2019-10-02 13:05:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-02 13:05:33,919 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:33,920 INFO L411 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, 1] [2019-10-02 13:05:33,920 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:33,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:33,921 INFO L82 PathProgramCache]: Analyzing trace with hash -183350682, now seen corresponding path program 1 times [2019-10-02 13:05:33,921 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:33,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:33,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:33,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:33,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-02 13:05:34,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:05:34,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-02 13:05:34,192 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 13:05:34,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 13:05:34,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-02 13:05:34,193 INFO L87 Difference]: Start difference. First operand 630 states and 877 transitions. Second operand 7 states. [2019-10-02 13:05:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:05:37,004 INFO L93 Difference]: Finished difference Result 1151 states and 1540 transitions. [2019-10-02 13:05:37,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-02 13:05:37,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2019-10-02 13:05:37,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:05:37,012 INFO L225 Difference]: With dead ends: 1151 [2019-10-02 13:05:37,012 INFO L226 Difference]: Without dead ends: 894 [2019-10-02 13:05:37,014 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-02 13:05:37,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2019-10-02 13:05:37,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 885. [2019-10-02 13:05:37,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 885 states. [2019-10-02 13:05:37,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1199 transitions. [2019-10-02 13:05:37,056 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1199 transitions. Word has length 205 [2019-10-02 13:05:37,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:05:37,056 INFO L475 AbstractCegarLoop]: Abstraction has 885 states and 1199 transitions. [2019-10-02 13:05:37,057 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 13:05:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1199 transitions. [2019-10-02 13:05:37,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-02 13:05:37,061 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:37,062 INFO L411 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, 1, 1] [2019-10-02 13:05:37,062 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:37,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:37,063 INFO L82 PathProgramCache]: Analyzing trace with hash -603889462, now seen corresponding path program 1 times [2019-10-02 13:05:37,063 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:37,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:37,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:37,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:37,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-02 13:05:37,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:05:37,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-02 13:05:37,627 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-02 13:05:37,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-02 13:05:37,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-10-02 13:05:37,628 INFO L87 Difference]: Start difference. First operand 885 states and 1199 transitions. Second operand 26 states. [2019-10-02 13:05:38,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:05:38,445 INFO L93 Difference]: Finished difference Result 1495 states and 1984 transitions. [2019-10-02 13:05:38,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-02 13:05:38,446 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 206 [2019-10-02 13:05:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:05:38,454 INFO L225 Difference]: With dead ends: 1495 [2019-10-02 13:05:38,454 INFO L226 Difference]: Without dead ends: 933 [2019-10-02 13:05:38,457 INFO L640 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 [2019-10-02 13:05:38,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2019-10-02 13:05:38,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 929. [2019-10-02 13:05:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2019-10-02 13:05:38,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1251 transitions. [2019-10-02 13:05:38,510 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1251 transitions. Word has length 206 [2019-10-02 13:05:38,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:05:38,510 INFO L475 AbstractCegarLoop]: Abstraction has 929 states and 1251 transitions. [2019-10-02 13:05:38,511 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-02 13:05:38,511 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1251 transitions. [2019-10-02 13:05:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-02 13:05:38,516 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:38,517 INFO L411 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, 1, 1] [2019-10-02 13:05:38,517 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:38,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:38,518 INFO L82 PathProgramCache]: Analyzing trace with hash 525734107, now seen corresponding path program 1 times [2019-10-02 13:05:38,518 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:38,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:38,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:38,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:38,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:38,756 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-02 13:05:38,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:05:38,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-02 13:05:38,757 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-02 13:05:38,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-02 13:05:38,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-02 13:05:38,758 INFO L87 Difference]: Start difference. First operand 929 states and 1251 transitions. Second operand 8 states. [2019-10-02 13:05:44,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:05:44,081 INFO L93 Difference]: Finished difference Result 2613 states and 3397 transitions. [2019-10-02 13:05:44,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-02 13:05:44,083 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2019-10-02 13:05:44,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:05:44,098 INFO L225 Difference]: With dead ends: 2613 [2019-10-02 13:05:44,098 INFO L226 Difference]: Without dead ends: 2079 [2019-10-02 13:05:44,101 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-02 13:05:44,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2019-10-02 13:05:44,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 2065. [2019-10-02 13:05:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2065 states. [2019-10-02 13:05:44,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2707 transitions. [2019-10-02 13:05:44,200 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2707 transitions. Word has length 237 [2019-10-02 13:05:44,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:05:44,201 INFO L475 AbstractCegarLoop]: Abstraction has 2065 states and 2707 transitions. [2019-10-02 13:05:44,201 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-02 13:05:44,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2707 transitions. [2019-10-02 13:05:44,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-02 13:05:44,207 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:44,208 INFO L411 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, 1, 1, 1] [2019-10-02 13:05:44,208 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:44,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:44,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1095480358, now seen corresponding path program 1 times [2019-10-02 13:05:44,209 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:44,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:44,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:44,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:44,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-02 13:05:44,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 13:05:44,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-02 13:05:44,570 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-02 13:05:44,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-02 13:05:44,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-02 13:05:44,571 INFO L87 Difference]: Start difference. First operand 2065 states and 2707 transitions. Second operand 18 states. [2019-10-02 13:05:45,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:05:45,045 INFO L93 Difference]: Finished difference Result 2787 states and 3624 transitions. [2019-10-02 13:05:45,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-02 13:05:45,046 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 238 [2019-10-02 13:05:45,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:05:45,056 INFO L225 Difference]: With dead ends: 2787 [2019-10-02 13:05:45,056 INFO L226 Difference]: Without dead ends: 1548 [2019-10-02 13:05:45,061 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-02 13:05:45,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2019-10-02 13:05:45,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1542. [2019-10-02 13:05:45,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-10-02 13:05:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2049 transitions. [2019-10-02 13:05:45,142 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2049 transitions. Word has length 238 [2019-10-02 13:05:45,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:05:45,143 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2049 transitions. [2019-10-02 13:05:45,143 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-02 13:05:45,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2049 transitions. [2019-10-02 13:05:45,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-02 13:05:45,153 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:45,153 INFO L411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:05:45,154 INFO L418 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:45,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:45,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1647463807, now seen corresponding path program 1 times [2019-10-02 13:05:45,154 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:45,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:45,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:45,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:45,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:45,426 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-02 13:05:45,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:05:45,427 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:05:45,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:46,126 INFO L256 TraceCheckSpWp]: Trace formula consists of 2840 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-02 13:05:46,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:05:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-02 13:05:46,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:05:46,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2019-10-02 13:05:46,485 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-02 13:05:46,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-02 13:05:46,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2019-10-02 13:05:46,486 INFO L87 Difference]: Start difference. First operand 1542 states and 2049 transitions. Second operand 14 states. [2019-10-02 13:05:51,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:05:51,275 INFO L93 Difference]: Finished difference Result 5614 states and 7563 transitions. [2019-10-02 13:05:51,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-02 13:05:51,275 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 247 [2019-10-02 13:05:51,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:05:51,300 INFO L225 Difference]: With dead ends: 5614 [2019-10-02 13:05:51,301 INFO L226 Difference]: Without dead ends: 4104 [2019-10-02 13:05:51,315 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2019-10-02 13:05:51,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2019-10-02 13:05:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 3986. [2019-10-02 13:05:51,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3986 states. [2019-10-02 13:05:51,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 5344 transitions. [2019-10-02 13:05:51,555 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 5344 transitions. Word has length 247 [2019-10-02 13:05:51,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:05:51,556 INFO L475 AbstractCegarLoop]: Abstraction has 3986 states and 5344 transitions. [2019-10-02 13:05:51,556 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-02 13:05:51,557 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 5344 transitions. [2019-10-02 13:05:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2019-10-02 13:05:51,570 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:51,571 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:05:51,572 INFO L418 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:51,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:51,572 INFO L82 PathProgramCache]: Analyzing trace with hash -2063849426, now seen corresponding path program 1 times [2019-10-02 13:05:51,573 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:51,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:51,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:51,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:51,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-02 13:05:51,962 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:05:51,962 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:05:52,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:52,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-02 13:05:52,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:05:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 13:05:53,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:05:53,059 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2019-10-02 13:05:53,060 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 13:05:53,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 13:05:53,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-02 13:05:53,061 INFO L87 Difference]: Start difference. First operand 3986 states and 5344 transitions. Second operand 12 states. [2019-10-02 13:05:57,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:05:57,723 INFO L93 Difference]: Finished difference Result 14401 states and 19552 transitions. [2019-10-02 13:05:57,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-02 13:05:57,723 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 249 [2019-10-02 13:05:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:05:57,799 INFO L225 Difference]: With dead ends: 14401 [2019-10-02 13:05:57,799 INFO L226 Difference]: Without dead ends: 10454 [2019-10-02 13:05:57,819 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2019-10-02 13:05:57,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10454 states. [2019-10-02 13:05:58,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10454 to 10007. [2019-10-02 13:05:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10007 states. [2019-10-02 13:05:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10007 states to 10007 states and 13546 transitions. [2019-10-02 13:05:58,304 INFO L78 Accepts]: Start accepts. Automaton has 10007 states and 13546 transitions. Word has length 249 [2019-10-02 13:05:58,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:05:58,304 INFO L475 AbstractCegarLoop]: Abstraction has 10007 states and 13546 transitions. [2019-10-02 13:05:58,304 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 13:05:58,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10007 states and 13546 transitions. [2019-10-02 13:05:58,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-02 13:05:58,326 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:05:58,326 INFO L411 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:05:58,327 INFO L418 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:05:58,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:05:58,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1908240610, now seen corresponding path program 1 times [2019-10-02 13:05:58,328 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:05:58,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:05:58,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:58,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:58,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:05:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-02 13:05:58,525 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:05:58,525 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:05:58,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:05:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:05:59,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 2843 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-02 13:05:59,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:05:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-02 13:05:59,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:05:59,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2019-10-02 13:05:59,778 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-02 13:05:59,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-02 13:05:59,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-02 13:05:59,778 INFO L87 Difference]: Start difference. First operand 10007 states and 13546 transitions. Second operand 12 states. [2019-10-02 13:06:04,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:06:04,782 INFO L93 Difference]: Finished difference Result 36560 states and 50164 transitions. [2019-10-02 13:06:04,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-02 13:06:04,782 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 250 [2019-10-02 13:06:04,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:06:04,941 INFO L225 Difference]: With dead ends: 36560 [2019-10-02 13:06:04,941 INFO L226 Difference]: Without dead ends: 26582 [2019-10-02 13:06:04,994 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2019-10-02 13:06:05,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26582 states. [2019-10-02 13:06:07,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26582 to 26242. [2019-10-02 13:06:07,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26242 states. [2019-10-02 13:06:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26242 states to 26242 states and 35722 transitions. [2019-10-02 13:06:07,145 INFO L78 Accepts]: Start accepts. Automaton has 26242 states and 35722 transitions. Word has length 250 [2019-10-02 13:06:07,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:06:07,145 INFO L475 AbstractCegarLoop]: Abstraction has 26242 states and 35722 transitions. [2019-10-02 13:06:07,146 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-02 13:06:07,146 INFO L276 IsEmpty]: Start isEmpty. Operand 26242 states and 35722 transitions. [2019-10-02 13:06:07,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2019-10-02 13:06:07,185 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:06:07,185 INFO L411 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:06:07,186 INFO L418 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:06:07,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:06:07,186 INFO L82 PathProgramCache]: Analyzing trace with hash -629786702, now seen corresponding path program 1 times [2019-10-02 13:06:07,186 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:06:07,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:06:07,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:06:07,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:06:07,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:06:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:06:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-02 13:06:07,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:06:07,866 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:06:08,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:06:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:06:08,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 2845 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-02 13:06:08,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:06:09,031 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-02 13:06:09,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:06:09,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [29] total 36 [2019-10-02 13:06:09,039 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-10-02 13:06:09,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-10-02 13:06:09,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1180, Unknown=0, NotChecked=0, Total=1260 [2019-10-02 13:06:09,040 INFO L87 Difference]: Start difference. First operand 26242 states and 35722 transitions. Second operand 36 states. [2019-10-02 13:07:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:07:06,078 INFO L93 Difference]: Finished difference Result 269130 states and 383652 transitions. [2019-10-02 13:07:06,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2019-10-02 13:07:06,079 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 252 [2019-10-02 13:07:06,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:07:07,576 INFO L225 Difference]: With dead ends: 269130 [2019-10-02 13:07:07,576 INFO L226 Difference]: Without dead ends: 242796 [2019-10-02 13:07:07,828 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6789 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1920, Invalid=21032, Unknown=0, NotChecked=0, Total=22952 [2019-10-02 13:07:08,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242796 states. [2019-10-02 13:07:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242796 to 177042. [2019-10-02 13:07:23,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177042 states. [2019-10-02 13:07:24,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177042 states to 177042 states and 248700 transitions. [2019-10-02 13:07:24,331 INFO L78 Accepts]: Start accepts. Automaton has 177042 states and 248700 transitions. Word has length 252 [2019-10-02 13:07:24,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:07:24,331 INFO L475 AbstractCegarLoop]: Abstraction has 177042 states and 248700 transitions. [2019-10-02 13:07:24,331 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-10-02 13:07:24,332 INFO L276 IsEmpty]: Start isEmpty. Operand 177042 states and 248700 transitions. [2019-10-02 13:07:24,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-10-02 13:07:24,489 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:07:24,489 INFO L411 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:07:24,489 INFO L418 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:07:24,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:07:24,490 INFO L82 PathProgramCache]: Analyzing trace with hash 585076797, now seen corresponding path program 1 times [2019-10-02 13:07:24,490 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:07:24,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:07:24,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:07:24,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:07:24,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:07:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:07:25,051 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-02 13:07:25,051 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:07:25,052 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:07:25,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:07:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:07:25,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 2846 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-02 13:07:25,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:07:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-02 13:07:25,827 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:07:25,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [29] total 34 [2019-10-02 13:07:25,829 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-10-02 13:07:25,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-10-02 13:07:25,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1048, Unknown=0, NotChecked=0, Total=1122 [2019-10-02 13:07:25,830 INFO L87 Difference]: Start difference. First operand 177042 states and 248700 transitions. Second operand 34 states. [2019-10-02 13:08:44,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:08:44,732 INFO L93 Difference]: Finished difference Result 1004455 states and 1439794 transitions. [2019-10-02 13:08:44,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2019-10-02 13:08:44,732 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 253 [2019-10-02 13:08:44,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:08:47,499 INFO L225 Difference]: With dead ends: 1004455 [2019-10-02 13:08:47,499 INFO L226 Difference]: Without dead ends: 826434 [2019-10-02 13:08:48,000 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6999 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1908, Invalid=21044, Unknown=0, NotChecked=0, Total=22952 [2019-10-02 13:08:56,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826434 states. [2019-10-02 13:09:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826434 to 651006. [2019-10-02 13:09:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651006 states. [2019-10-02 13:09:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651006 states to 651006 states and 922547 transitions. [2019-10-02 13:09:50,209 INFO L78 Accepts]: Start accepts. Automaton has 651006 states and 922547 transitions. Word has length 253 [2019-10-02 13:09:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 13:09:50,210 INFO L475 AbstractCegarLoop]: Abstraction has 651006 states and 922547 transitions. [2019-10-02 13:09:50,210 INFO L476 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-10-02 13:09:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 651006 states and 922547 transitions. [2019-10-02 13:09:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-10-02 13:09:50,488 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 13:09:50,489 INFO L411 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 13:09:50,489 INFO L418 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 13:09:50,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 13:09:50,490 INFO L82 PathProgramCache]: Analyzing trace with hash -2115179870, now seen corresponding path program 1 times [2019-10-02 13:09:50,490 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 13:09:50,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 13:09:50,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:09:50,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:09:50,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 13:09:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:09:59,400 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-02 13:09:59,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 13:09:59,401 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 13:09:59,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 13:09:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 13:09:59,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-02 13:09:59,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 13:10:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-02 13:10:00,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 13:10:00,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [29] total 34 [2019-10-02 13:10:00,160 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-10-02 13:10:00,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-10-02 13:10:00,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=1048, Unknown=0, NotChecked=0, Total=1122 [2019-10-02 13:10:00,161 INFO L87 Difference]: Start difference. First operand 651006 states and 922547 transitions. Second operand 34 states. [2019-10-02 13:13:07,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 13:13:07,402 INFO L93 Difference]: Finished difference Result 2902709 states and 4148751 transitions. [2019-10-02 13:13:07,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2019-10-02 13:13:07,403 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 255 [2019-10-02 13:13:07,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 13:13:18,642 INFO L225 Difference]: With dead ends: 2902709 [2019-10-02 13:13:18,642 INFO L226 Difference]: Without dead ends: 2248564 [2019-10-02 13:13:21,356 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6999 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1908, Invalid=21044, Unknown=0, NotChecked=0, Total=22952 [2019-10-02 13:13:23,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2248564 states.