java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:14:54,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:14:54,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:14:54,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:14:54,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:14:54,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:14:54,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:14:54,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:14:54,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:14:54,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:14:54,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:14:54,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:14:54,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:14:54,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:14:54,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:14:54,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:14:54,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:14:54,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:14:54,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:14:54,564 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:14:54,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:14:54,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:14:54,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:14:54,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:14:54,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:14:54,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:14:54,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:14:54,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:14:54,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:14:54,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:54,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:54,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:54,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:54,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:54,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:54,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:54,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:54,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:54,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:54,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:54,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:54,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:14:54,604 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:54,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:54,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:54,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:54,606 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:54,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:54,606 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:54,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:54,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:54,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:54,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:54,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:54,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:54,608 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:54,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:54,608 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:54,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:54,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:54,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:54,609 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:54,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:54,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:54,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:54,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:54,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:54,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:54,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:54,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:54,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:14:54,948 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:54,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:54,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:54,979 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:54,980 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:54,980 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product25.cil.c [2019-10-13 21:14:55,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601fc1a65/853ded26642c4a219f3d5f73aace9421/FLAG43d1cf2f7 [2019-10-13 21:14:55,682 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:55,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product25.cil.c [2019-10-13 21:14:55,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601fc1a65/853ded26642c4a219f3d5f73aace9421/FLAG43d1cf2f7 [2019-10-13 21:14:55,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/601fc1a65/853ded26642c4a219f3d5f73aace9421 [2019-10-13 21:14:55,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:55,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:55,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:55,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:55,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:55,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:55" (1/1) ... [2019-10-13 21:14:55,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6608a0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:55, skipping insertion in model container [2019-10-13 21:14:55,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:55" (1/1) ... [2019-10-13 21:14:55,909 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:55,982 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:56,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:56,807 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:56,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:57,084 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:57,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:57 WrapperNode [2019-10-13 21:14:57,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:57,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:57,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:57,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:57,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:57" (1/1) ... [2019-10-13 21:14:57,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:57" (1/1) ... [2019-10-13 21:14:57,143 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:57" (1/1) ... [2019-10-13 21:14:57,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:57" (1/1) ... [2019-10-13 21:14:57,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:57" (1/1) ... [2019-10-13 21:14:57,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:57" (1/1) ... [2019-10-13 21:14:57,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:57" (1/1) ... [2019-10-13 21:14:57,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:57,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:57,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:57,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:57,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:57,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:57,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:57,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:57,380 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:57,380 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:14:57,381 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:14:57,381 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:57,382 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:57,383 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:14:57,383 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:14:57,384 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:57,384 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:57,384 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:57,385 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:57,386 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:57,386 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:57,388 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:57,389 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:14:57,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:14:57,390 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:14:57,390 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:14:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:57,391 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:57,394 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:57,395 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:57,396 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:14:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:14:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:57,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:57,401 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:57,402 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:57,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:57,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:57,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:57,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:57,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:57,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:57,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:57,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:57,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:57,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:57,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:57,408 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:57,409 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:57,409 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:57,409 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:57,409 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:57,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:57,409 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:57,410 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:57,410 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:57,410 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:57,410 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:57,410 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:57,410 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:57,411 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:57,411 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:57,411 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:14:57,411 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:14:57,411 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:57,412 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:57,412 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:57,412 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:57,412 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:57,413 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:57,414 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:57,415 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:57,416 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:57,417 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:57,418 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:57,419 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:57,427 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:57,427 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:57,427 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:57,428 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:57,429 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:57,430 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:57,436 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:57,437 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:14:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:14:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:14:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:14:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:14:57,438 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:14:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:14:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:14:57,439 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:57,443 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:57,444 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:14:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:14:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:57,445 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:57,446 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:14:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:57,447 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:14:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:57,448 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:57,449 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:57,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:57,451 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:57,452 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:57,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:14:59,833 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:14:59,834 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:14:59,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:59 BoogieIcfgContainer [2019-10-13 21:14:59,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:14:59,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:14:59,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:14:59,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:14:59,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:55" (1/3) ... [2019-10-13 21:14:59,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c75ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:59, skipping insertion in model container [2019-10-13 21:14:59,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:57" (2/3) ... [2019-10-13 21:14:59,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56c75ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:59, skipping insertion in model container [2019-10-13 21:14:59,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:59" (3/3) ... [2019-10-13 21:14:59,847 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product25.cil.c [2019-10-13 21:14:59,857 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:14:59,868 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:14:59,880 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:14:59,925 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:14:59,925 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:14:59,925 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:14:59,925 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:14:59,926 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:14:59,926 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:14:59,926 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:14:59,926 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:14:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states. [2019-10-13 21:14:59,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-13 21:14:59,985 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:59,986 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:59,991 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:59,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:00,001 INFO L82 PathProgramCache]: Analyzing trace with hash -458917487, now seen corresponding path program 1 times [2019-10-13 21:15:00,011 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:00,011 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352333199] [2019-10-13 21:15:00,011 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:00,012 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:00,012 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:00,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352333199] [2019-10-13 21:15:00,665 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:00,665 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:00,665 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873532877] [2019-10-13 21:15:00,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:00,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:00,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:00,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:00,695 INFO L87 Difference]: Start difference. First operand 589 states. Second operand 2 states. [2019-10-13 21:15:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:00,810 INFO L93 Difference]: Finished difference Result 864 states and 1168 transitions. [2019-10-13 21:15:00,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:00,812 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 188 [2019-10-13 21:15:00,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:00,855 INFO L225 Difference]: With dead ends: 864 [2019-10-13 21:15:00,855 INFO L226 Difference]: Without dead ends: 560 [2019-10-13 21:15:00,867 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:00,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2019-10-13 21:15:01,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2019-10-13 21:15:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2019-10-13 21:15:01,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 761 transitions. [2019-10-13 21:15:01,031 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 761 transitions. Word has length 188 [2019-10-13 21:15:01,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:01,035 INFO L462 AbstractCegarLoop]: Abstraction has 560 states and 761 transitions. [2019-10-13 21:15:01,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 761 transitions. [2019-10-13 21:15:01,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 21:15:01,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:01,049 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:01,050 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:01,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:01,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1174707760, now seen corresponding path program 1 times [2019-10-13 21:15:01,050 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:01,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645948626] [2019-10-13 21:15:01,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:01,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:01,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:01,434 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:01,434 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645948626] [2019-10-13 21:15:01,434 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:01,435 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:01,435 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667366262] [2019-10-13 21:15:01,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:01,438 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:01,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:01,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:01,439 INFO L87 Difference]: Start difference. First operand 560 states and 761 transitions. Second operand 3 states. [2019-10-13 21:15:01,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:01,543 INFO L93 Difference]: Finished difference Result 847 states and 1130 transitions. [2019-10-13 21:15:01,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:01,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2019-10-13 21:15:01,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:01,553 INFO L225 Difference]: With dead ends: 847 [2019-10-13 21:15:01,554 INFO L226 Difference]: Without dead ends: 563 [2019-10-13 21:15:01,556 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:01,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2019-10-13 21:15:01,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 562. [2019-10-13 21:15:01,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2019-10-13 21:15:01,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 763 transitions. [2019-10-13 21:15:01,589 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 763 transitions. Word has length 189 [2019-10-13 21:15:01,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:01,590 INFO L462 AbstractCegarLoop]: Abstraction has 562 states and 763 transitions. [2019-10-13 21:15:01,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:01,590 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 763 transitions. [2019-10-13 21:15:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 21:15:01,595 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:01,595 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:01,595 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:01,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:01,596 INFO L82 PathProgramCache]: Analyzing trace with hash -980165084, now seen corresponding path program 1 times [2019-10-13 21:15:01,596 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:01,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095158237] [2019-10-13 21:15:01,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:01,597 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:01,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:01,848 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095158237] [2019-10-13 21:15:01,848 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:01,848 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:01,849 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102593137] [2019-10-13 21:15:01,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:01,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:01,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:01,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:01,854 INFO L87 Difference]: Start difference. First operand 562 states and 763 transitions. Second operand 3 states. [2019-10-13 21:15:01,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:01,918 INFO L93 Difference]: Finished difference Result 1102 states and 1527 transitions. [2019-10-13 21:15:01,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:01,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2019-10-13 21:15:01,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:01,931 INFO L225 Difference]: With dead ends: 1102 [2019-10-13 21:15:01,931 INFO L226 Difference]: Without dead ends: 605 [2019-10-13 21:15:01,934 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:01,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-13 21:15:01,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 604. [2019-10-13 21:15:01,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2019-10-13 21:15:02,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 835 transitions. [2019-10-13 21:15:02,000 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 835 transitions. Word has length 195 [2019-10-13 21:15:02,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:02,002 INFO L462 AbstractCegarLoop]: Abstraction has 604 states and 835 transitions. [2019-10-13 21:15:02,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:02,002 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 835 transitions. [2019-10-13 21:15:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 21:15:02,013 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:02,014 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:02,014 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:02,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:02,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1952461671, now seen corresponding path program 1 times [2019-10-13 21:15:02,018 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:02,018 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603842064] [2019-10-13 21:15:02,018 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,019 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,019 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:02,432 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:02,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603842064] [2019-10-13 21:15:02,433 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:02,436 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:15:02,437 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670507994] [2019-10-13 21:15:02,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:15:02,438 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:02,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:15:02,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:15:02,439 INFO L87 Difference]: Start difference. First operand 604 states and 835 transitions. Second operand 8 states. [2019-10-13 21:15:02,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:02,548 INFO L93 Difference]: Finished difference Result 875 states and 1192 transitions. [2019-10-13 21:15:02,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:15:02,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 196 [2019-10-13 21:15:02,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:02,554 INFO L225 Difference]: With dead ends: 875 [2019-10-13 21:15:02,555 INFO L226 Difference]: Without dead ends: 604 [2019-10-13 21:15:02,556 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:15:02,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2019-10-13 21:15:02,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2019-10-13 21:15:02,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2019-10-13 21:15:02,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 834 transitions. [2019-10-13 21:15:02,590 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 834 transitions. Word has length 196 [2019-10-13 21:15:02,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:02,591 INFO L462 AbstractCegarLoop]: Abstraction has 604 states and 834 transitions. [2019-10-13 21:15:02,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:15:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 834 transitions. [2019-10-13 21:15:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:15:02,686 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:02,687 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:02,687 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:02,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:02,687 INFO L82 PathProgramCache]: Analyzing trace with hash 988756676, now seen corresponding path program 1 times [2019-10-13 21:15:02,688 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:02,688 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234191294] [2019-10-13 21:15:02,688 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,688 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:02,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:02,937 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:02,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234191294] [2019-10-13 21:15:02,938 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:02,938 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:15:02,939 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612766733] [2019-10-13 21:15:02,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:02,940 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:02,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:02,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:15:02,941 INFO L87 Difference]: Start difference. First operand 604 states and 834 transitions. Second operand 7 states. [2019-10-13 21:15:06,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:06,019 INFO L93 Difference]: Finished difference Result 1175 states and 1588 transitions. [2019-10-13 21:15:06,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:06,020 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2019-10-13 21:15:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:06,027 INFO L225 Difference]: With dead ends: 1175 [2019-10-13 21:15:06,027 INFO L226 Difference]: Without dead ends: 900 [2019-10-13 21:15:06,028 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:15:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2019-10-13 21:15:06,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 891. [2019-10-13 21:15:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2019-10-13 21:15:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1211 transitions. [2019-10-13 21:15:06,071 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1211 transitions. Word has length 203 [2019-10-13 21:15:06,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:06,072 INFO L462 AbstractCegarLoop]: Abstraction has 891 states and 1211 transitions. [2019-10-13 21:15:06,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1211 transitions. [2019-10-13 21:15:06,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:15:06,076 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:06,076 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:06,077 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:06,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:06,077 INFO L82 PathProgramCache]: Analyzing trace with hash -866609900, now seen corresponding path program 1 times [2019-10-13 21:15:06,077 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:06,078 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740298560] [2019-10-13 21:15:06,078 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:06,078 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:06,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:06,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740298560] [2019-10-13 21:15:06,575 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:06,575 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 21:15:06,575 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959992088] [2019-10-13 21:15:06,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:15:06,576 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:06,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:15:06,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:15:06,577 INFO L87 Difference]: Start difference. First operand 891 states and 1211 transitions. Second operand 26 states. [2019-10-13 21:15:07,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:07,415 INFO L93 Difference]: Finished difference Result 1582 states and 2143 transitions. [2019-10-13 21:15:07,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 21:15:07,415 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 204 [2019-10-13 21:15:07,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:07,425 INFO L225 Difference]: With dead ends: 1582 [2019-10-13 21:15:07,426 INFO L226 Difference]: Without dead ends: 1016 [2019-10-13 21:15:07,429 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:15:07,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1016 states. [2019-10-13 21:15:07,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1016 to 1011. [2019-10-13 21:15:07,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1011 states. [2019-10-13 21:15:07,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1368 transitions. [2019-10-13 21:15:07,485 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1368 transitions. Word has length 204 [2019-10-13 21:15:07,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:07,486 INFO L462 AbstractCegarLoop]: Abstraction has 1011 states and 1368 transitions. [2019-10-13 21:15:07,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:15:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1368 transitions. [2019-10-13 21:15:07,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-13 21:15:07,490 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:07,491 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:07,491 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:07,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:07,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1569565684, now seen corresponding path program 1 times [2019-10-13 21:15:07,492 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:07,492 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527731373] [2019-10-13 21:15:07,492 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:07,493 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:07,496 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:07,769 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527731373] [2019-10-13 21:15:07,769 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428925896] [2019-10-13 21:15:07,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:08,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:08,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:08,787 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:09,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:09,294 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:09,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:09,477 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:09,477 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:15:09,477 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303463813] [2019-10-13 21:15:09,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:09,478 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:09,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:09,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:15:09,479 INFO L87 Difference]: Start difference. First operand 1011 states and 1368 transitions. Second operand 9 states. [2019-10-13 21:15:10,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:10,937 INFO L93 Difference]: Finished difference Result 2000 states and 2716 transitions. [2019-10-13 21:15:10,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:10,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 235 [2019-10-13 21:15:10,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:10,945 INFO L225 Difference]: With dead ends: 2000 [2019-10-13 21:15:10,945 INFO L226 Difference]: Without dead ends: 1025 [2019-10-13 21:15:10,950 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 456 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:15:10,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2019-10-13 21:15:11,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1025. [2019-10-13 21:15:11,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1025 states. [2019-10-13 21:15:11,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1386 transitions. [2019-10-13 21:15:11,017 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1386 transitions. Word has length 235 [2019-10-13 21:15:11,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:11,019 INFO L462 AbstractCegarLoop]: Abstraction has 1025 states and 1386 transitions. [2019-10-13 21:15:11,019 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:11,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1386 transitions. [2019-10-13 21:15:11,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 21:15:11,025 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:11,025 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:11,234 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:11,235 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:11,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:11,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1087527948, now seen corresponding path program 1 times [2019-10-13 21:15:11,235 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:11,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997719763] [2019-10-13 21:15:11,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:11,236 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:11,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:11,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997719763] [2019-10-13 21:15:11,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573957112] [2019-10-13 21:15:11,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:12,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:12,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:12,606 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:12,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:12,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:12,980 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:12,980 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:15:12,980 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188907689] [2019-10-13 21:15:12,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:12,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:12,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:12,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:12,982 INFO L87 Difference]: Start difference. First operand 1025 states and 1386 transitions. Second operand 7 states. [2019-10-13 21:15:14,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:14,235 INFO L93 Difference]: Finished difference Result 2001 states and 2720 transitions. [2019-10-13 21:15:14,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:14,236 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2019-10-13 21:15:14,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:14,242 INFO L225 Difference]: With dead ends: 2001 [2019-10-13 21:15:14,242 INFO L226 Difference]: Without dead ends: 1027 [2019-10-13 21:15:14,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 463 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:15:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2019-10-13 21:15:14,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1027. [2019-10-13 21:15:14,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1027 states. [2019-10-13 21:15:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1389 transitions. [2019-10-13 21:15:14,291 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1389 transitions. Word has length 236 [2019-10-13 21:15:14,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:14,292 INFO L462 AbstractCegarLoop]: Abstraction has 1027 states and 1389 transitions. [2019-10-13 21:15:14,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:14,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1389 transitions. [2019-10-13 21:15:14,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-13 21:15:14,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:14,298 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:14,512 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:14,512 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:14,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:14,513 INFO L82 PathProgramCache]: Analyzing trace with hash -165913417, now seen corresponding path program 1 times [2019-10-13 21:15:14,513 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:14,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962993311] [2019-10-13 21:15:14,514 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:14,514 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:14,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:14,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:14,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962993311] [2019-10-13 21:15:14,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381455927] [2019-10-13 21:15:14,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:15,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:15,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:15,759 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:16,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:16,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:16,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:16,578 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:16,579 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:16,579 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:15:16,579 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471000564] [2019-10-13 21:15:16,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:16,583 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:16,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:16,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:15:16,584 INFO L87 Difference]: Start difference. First operand 1027 states and 1389 transitions. Second operand 16 states. [2019-10-13 21:15:18,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:18,919 INFO L93 Difference]: Finished difference Result 2005 states and 2720 transitions. [2019-10-13 21:15:18,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:18,920 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 237 [2019-10-13 21:15:18,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:18,926 INFO L225 Difference]: With dead ends: 2005 [2019-10-13 21:15:18,927 INFO L226 Difference]: Without dead ends: 1039 [2019-10-13 21:15:18,931 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 460 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:18,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2019-10-13 21:15:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1037. [2019-10-13 21:15:18,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2019-10-13 21:15:18,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1400 transitions. [2019-10-13 21:15:18,976 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1400 transitions. Word has length 237 [2019-10-13 21:15:18,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:18,977 INFO L462 AbstractCegarLoop]: Abstraction has 1037 states and 1400 transitions. [2019-10-13 21:15:18,977 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:18,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1400 transitions. [2019-10-13 21:15:18,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-13 21:15:18,980 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:18,981 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:19,196 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:19,197 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:19,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:19,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1578129013, now seen corresponding path program 2 times [2019-10-13 21:15:19,198 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:19,198 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080601844] [2019-10-13 21:15:19,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:19,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:20,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080601844] [2019-10-13 21:15:20,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691458988] [2019-10-13 21:15:20,036 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:20,693 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:15:20,693 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:20,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 2850 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:20,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:20,919 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:21,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:21,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:15:21,424 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:21,424 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-13 21:15:21,424 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799371678] [2019-10-13 21:15:21,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:21,428 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:21,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:21,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:15:21,429 INFO L87 Difference]: Start difference. First operand 1037 states and 1400 transitions. Second operand 12 states. [2019-10-13 21:15:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:22,815 INFO L93 Difference]: Finished difference Result 1996 states and 2708 transitions. [2019-10-13 21:15:22,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:22,816 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 238 [2019-10-13 21:15:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:22,824 INFO L225 Difference]: With dead ends: 1996 [2019-10-13 21:15:22,824 INFO L226 Difference]: Without dead ends: 1039 [2019-10-13 21:15:22,829 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 478 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 21:15:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2019-10-13 21:15:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1037. [2019-10-13 21:15:22,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2019-10-13 21:15:22,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1399 transitions. [2019-10-13 21:15:22,947 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1399 transitions. Word has length 238 [2019-10-13 21:15:22,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:22,948 INFO L462 AbstractCegarLoop]: Abstraction has 1037 states and 1399 transitions. [2019-10-13 21:15:22,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:22,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1399 transitions. [2019-10-13 21:15:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-10-13 21:15:22,954 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,955 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:23,165 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:23,166 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:23,167 INFO L82 PathProgramCache]: Analyzing trace with hash 39756280, now seen corresponding path program 3 times [2019-10-13 21:15:23,167 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:23,167 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725476892] [2019-10-13 21:15:23,168 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,168 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,666 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:15:23,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725476892] [2019-10-13 21:15:23,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648591403] [2019-10-13 21:15:23,667 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:24,173 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:15:24,174 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:24,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 2353 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:24,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:24,443 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:24,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:24,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:25,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:15:25,212 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:25,212 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [29] total 42 [2019-10-13 21:15:25,212 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509653433] [2019-10-13 21:15:25,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:15:25,214 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:25,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:15:25,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1618, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 21:15:25,215 INFO L87 Difference]: Start difference. First operand 1037 states and 1399 transitions. Second operand 15 states. [2019-10-13 21:15:26,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:26,905 INFO L93 Difference]: Finished difference Result 2003 states and 2715 transitions. [2019-10-13 21:15:26,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:26,906 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 239 [2019-10-13 21:15:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:26,912 INFO L225 Difference]: With dead ends: 2003 [2019-10-13 21:15:26,913 INFO L226 Difference]: Without dead ends: 1041 [2019-10-13 21:15:26,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 475 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=1937, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:15:26,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2019-10-13 21:15:26,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1037. [2019-10-13 21:15:26,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2019-10-13 21:15:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1398 transitions. [2019-10-13 21:15:26,960 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1398 transitions. Word has length 239 [2019-10-13 21:15:26,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:26,960 INFO L462 AbstractCegarLoop]: Abstraction has 1037 states and 1398 transitions. [2019-10-13 21:15:26,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:15:26,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1398 transitions. [2019-10-13 21:15:26,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-10-13 21:15:26,964 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:26,964 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:27,172 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:27,172 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:27,173 INFO L82 PathProgramCache]: Analyzing trace with hash 984049831, now seen corresponding path program 1 times [2019-10-13 21:15:27,174 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:27,174 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060290842] [2019-10-13 21:15:27,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:27,174 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:27,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:15:27,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060290842] [2019-10-13 21:15:27,663 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072932413] [2019-10-13 21:15:27,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:28,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:28,366 INFO L279 TraceCheckSpWp]: Computing forward predicates...