/usr/bin/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_spec4_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:52:17,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:52:17,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:52:17,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:52:17,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:52:17,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:52:17,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:52:17,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:52:17,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:52:17,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:52:17,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:52:17,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:52:17,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:52:17,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:52:17,340 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:52:17,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:52:17,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:52:17,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:52:17,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:52:17,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:52:17,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:52:17,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:52:17,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:52:17,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:52:17,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:52:17,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:52:17,356 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:52:17,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:52:17,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:52:17,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:52:17,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:52:17,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:52:17,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:52:17,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:52:17,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:52:17,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:52:17,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:52:17,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:52:17,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:52:17,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:52:17,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:52:17,366 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 [2019-11-07 00:52:17,381 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:52:17,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:52:17,382 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:52:17,382 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:52:17,382 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:52:17,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:52:17,383 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:52:17,383 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:52:17,383 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:52:17,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:52:17,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:52:17,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:52:17,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:52:17,384 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:52:17,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:52:17,385 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:52:17,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:52:17,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:52:17,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:52:17,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:52:17,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:52:17,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:17,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:52:17,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:52:17,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:52:17,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:52:17,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:52:17,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:52:17,387 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 [2019-11-07 00:52:17,693 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:52:17,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:52:17,712 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:52:17,713 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:52:17,714 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:52:17,715 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2019-11-07 00:52:17,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba19bc6fc/8485358916ed4328ae8837a3c9e0abdc/FLAG08b585ff4 [2019-11-07 00:52:18,399 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:52:18,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2019-11-07 00:52:18,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba19bc6fc/8485358916ed4328ae8837a3c9e0abdc/FLAG08b585ff4 [2019-11-07 00:52:18,644 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba19bc6fc/8485358916ed4328ae8837a3c9e0abdc [2019-11-07 00:52:18,655 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:52:18,657 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:52:18,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:18,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:52:18,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:52:18,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:18" (1/1) ... [2019-11-07 00:52:18,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e59cec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:18, skipping insertion in model container [2019-11-07 00:52:18,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:18" (1/1) ... [2019-11-07 00:52:18,714 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:52:18,868 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:52:19,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:19,989 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:52:20,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:20,227 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:52:20,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:20 WrapperNode [2019-11-07 00:52:20,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:20,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:52:20,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:52:20,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:52:20,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:20" (1/1) ... [2019-11-07 00:52:20,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:20" (1/1) ... [2019-11-07 00:52:20,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:20" (1/1) ... [2019-11-07 00:52:20,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:20" (1/1) ... [2019-11-07 00:52:20,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:20" (1/1) ... [2019-11-07 00:52:20,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:20" (1/1) ... [2019-11-07 00:52:20,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:20" (1/1) ... [2019-11-07 00:52:20,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:52:20,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:52:20,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:52:20,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:52:20,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:20,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:52:20,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:52:20,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:52:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:52:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:52:20,516 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:52:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:52:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:52:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:52:20,517 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:52:20,518 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:52:20,518 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:52:20,518 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:52:20,518 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:52:20,519 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:52:20,519 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:52:20,519 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:52:20,519 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:52:20,521 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:52:20,521 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:52:20,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:52:20,522 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:52:20,522 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:52:20,522 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:52:20,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:52:20,522 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:52:20,523 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:52:20,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:52:20,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:52:20,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:52:20,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:52:20,524 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:52:20,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:52:20,524 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:52:20,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:52:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:52:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:52:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:52:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:52:20,525 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:52:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:52:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:52:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:52:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:52:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:52:20,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:52:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:52:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:52:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:52:20,527 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:52:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:52:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:52:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:52:20,528 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:52:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:52:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:52:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:52:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:52:20,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:52:20,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:52:20,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:52:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:52:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:52:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:52:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:52:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:52:20,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:52:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:52:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:52:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:52:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:52:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:52:20,534 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:52:20,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:52:20,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:52:20,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:52:20,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:52:20,535 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:52:20,536 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-11-07 00:52:20,537 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:52:20,537 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:52:20,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:52:20,537 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:52:20,538 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:52:20,539 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:52:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:52:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:52:20,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:52:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:52:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:52:20,541 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:52:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:52:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:52:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:52:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:52:20,542 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:52:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:52:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:52:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:52:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:52:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:52:20,543 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:52:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:52:20,544 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:52:20,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:52:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:52:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:52:20,545 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:52:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:52:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:52:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:52:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:52:20,546 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:52:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:52:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:52:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:52:20,547 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:52:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:52:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:52:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:52:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:52:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:52:20,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:52:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:52:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:52:20,550 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:52:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:52:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:52:20,551 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:52:20,552 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:52:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:52:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:52:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:52:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:52:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:52:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:52:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:52:20,566 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:52:20,567 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:52:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:52:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:52:20,568 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:52:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:52:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:52:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:52:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:52:20,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:52:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:52:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:52:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:52:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:52:20,570 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:52:20,571 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:52:20,571 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:52:20,571 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:52:20,571 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:52:20,571 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:52:20,571 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:52:20,572 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:52:20,572 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:52:20,572 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:52:20,572 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:52:20,572 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:52:20,572 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:52:20,572 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:52:20,572 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:52:20,573 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:52:20,573 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:52:20,573 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:52:20,573 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:52:20,573 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:52:20,573 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:52:20,574 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:52:20,574 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:52:20,574 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:52:20,574 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:52:20,574 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:52:20,574 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:52:20,574 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:52:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:52:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:52:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:52:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:52:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:52:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:52:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:52:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:52:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:52:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:52:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:52:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:52:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:52:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:52:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:52:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:52:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:52:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:52:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:52:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-11-07 00:52:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:52:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:52:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:52:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:52:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:52:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:52:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:52:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:52:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:52:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:52:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:52:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:52:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:52:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:52:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:52:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:52:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:52:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:52:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:52:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:52:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:52:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:52:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:52:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:52:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:52:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:52:22,905 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:52:22,906 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:52:22,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:22 BoogieIcfgContainer [2019-11-07 00:52:22,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:52:22,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:52:22,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:52:22,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:52:22,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:18" (1/3) ... [2019-11-07 00:52:22,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46194506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:22, skipping insertion in model container [2019-11-07 00:52:22,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:20" (2/3) ... [2019-11-07 00:52:22,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46194506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:22, skipping insertion in model container [2019-11-07 00:52:22,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:22" (3/3) ... [2019-11-07 00:52:22,916 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product28.cil.c [2019-11-07 00:52:22,926 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:52:22,938 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:52:22,950 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:52:22,988 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:52:22,988 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:52:22,988 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:52:22,988 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:52:22,988 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:52:22,988 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:52:22,989 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:52:22,989 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:52:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states. [2019-11-07 00:52:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-11-07 00:52:23,055 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:23,056 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:23,058 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:23,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:23,063 INFO L82 PathProgramCache]: Analyzing trace with hash -153424119, now seen corresponding path program 1 times [2019-11-07 00:52:23,073 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:23,074 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065625911] [2019-11-07 00:52:23,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:23,747 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065625911] [2019-11-07 00:52:23,748 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:23,748 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:52:23,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760096827] [2019-11-07 00:52:23,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:52:23,757 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:23,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:52:23,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:23,775 INFO L87 Difference]: Start difference. First operand 509 states. Second operand 2 states. [2019-11-07 00:52:23,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:23,896 INFO L93 Difference]: Finished difference Result 715 states and 948 transitions. [2019-11-07 00:52:23,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:52:23,897 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-11-07 00:52:23,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:23,922 INFO L225 Difference]: With dead ends: 715 [2019-11-07 00:52:23,922 INFO L226 Difference]: Without dead ends: 458 [2019-11-07 00:52:23,931 INFO L630 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 [2019-11-07 00:52:23,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2019-11-07 00:52:24,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2019-11-07 00:52:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2019-11-07 00:52:24,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 611 transitions. [2019-11-07 00:52:24,044 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 611 transitions. Word has length 164 [2019-11-07 00:52:24,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:24,046 INFO L462 AbstractCegarLoop]: Abstraction has 458 states and 611 transitions. [2019-11-07 00:52:24,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:52:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 611 transitions. [2019-11-07 00:52:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-07 00:52:24,052 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:24,053 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:24,053 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:24,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:24,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1934400744, now seen corresponding path program 1 times [2019-11-07 00:52:24,054 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:24,054 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685755050] [2019-11-07 00:52:24,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:24,237 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685755050] [2019-11-07 00:52:24,237 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:24,237 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:24,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277340640] [2019-11-07 00:52:24,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:24,240 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:24,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:24,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:24,241 INFO L87 Difference]: Start difference. First operand 458 states and 611 transitions. Second operand 3 states. [2019-11-07 00:52:24,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:24,287 INFO L93 Difference]: Finished difference Result 698 states and 916 transitions. [2019-11-07 00:52:24,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:24,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-11-07 00:52:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:24,293 INFO L225 Difference]: With dead ends: 698 [2019-11-07 00:52:24,293 INFO L226 Difference]: Without dead ends: 461 [2019-11-07 00:52:24,295 INFO L630 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 [2019-11-07 00:52:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2019-11-07 00:52:24,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 460. [2019-11-07 00:52:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2019-11-07 00:52:24,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 613 transitions. [2019-11-07 00:52:24,323 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 613 transitions. Word has length 165 [2019-11-07 00:52:24,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:24,324 INFO L462 AbstractCegarLoop]: Abstraction has 460 states and 613 transitions. [2019-11-07 00:52:24,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:24,325 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 613 transitions. [2019-11-07 00:52:24,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 00:52:24,330 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:24,330 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:24,330 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:24,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:24,332 INFO L82 PathProgramCache]: Analyzing trace with hash -812491460, now seen corresponding path program 1 times [2019-11-07 00:52:24,332 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:24,333 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076161512] [2019-11-07 00:52:24,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:24,550 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076161512] [2019-11-07 00:52:24,550 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:24,551 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:24,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913121891] [2019-11-07 00:52:24,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:24,552 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:24,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:24,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:24,553 INFO L87 Difference]: Start difference. First operand 460 states and 613 transitions. Second operand 3 states. [2019-11-07 00:52:24,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:24,602 INFO L93 Difference]: Finished difference Result 894 states and 1221 transitions. [2019-11-07 00:52:24,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:24,602 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-11-07 00:52:24,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:24,610 INFO L225 Difference]: With dead ends: 894 [2019-11-07 00:52:24,611 INFO L226 Difference]: Without dead ends: 499 [2019-11-07 00:52:24,614 INFO L630 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 [2019-11-07 00:52:24,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-11-07 00:52:24,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 498. [2019-11-07 00:52:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2019-11-07 00:52:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 679 transitions. [2019-11-07 00:52:24,652 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 679 transitions. Word has length 171 [2019-11-07 00:52:24,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:24,653 INFO L462 AbstractCegarLoop]: Abstraction has 498 states and 679 transitions. [2019-11-07 00:52:24,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:24,654 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 679 transitions. [2019-11-07 00:52:24,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-07 00:52:24,662 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:24,663 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:24,663 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:24,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:24,663 INFO L82 PathProgramCache]: Analyzing trace with hash -522530241, now seen corresponding path program 1 times [2019-11-07 00:52:24,664 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:24,664 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346995114] [2019-11-07 00:52:24,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:24,937 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346995114] [2019-11-07 00:52:24,937 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:24,938 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:52:24,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670070017] [2019-11-07 00:52:24,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:24,940 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:24,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:24,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:52:24,941 INFO L87 Difference]: Start difference. First operand 498 states and 679 transitions. Second operand 7 states. [2019-11-07 00:52:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:28,010 INFO L93 Difference]: Finished difference Result 954 states and 1267 transitions. [2019-11-07 00:52:28,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:52:28,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2019-11-07 00:52:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:28,024 INFO L225 Difference]: With dead ends: 954 [2019-11-07 00:52:28,024 INFO L226 Difference]: Without dead ends: 733 [2019-11-07 00:52:28,026 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:28,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2019-11-07 00:52:28,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 724. [2019-11-07 00:52:28,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2019-11-07 00:52:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 971 transitions. [2019-11-07 00:52:28,095 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 971 transitions. Word has length 172 [2019-11-07 00:52:28,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:28,096 INFO L462 AbstractCegarLoop]: Abstraction has 724 states and 971 transitions. [2019-11-07 00:52:28,096 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:28,096 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 971 transitions. [2019-11-07 00:52:28,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-07 00:52:28,101 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:28,101 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:28,101 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:28,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:28,102 INFO L82 PathProgramCache]: Analyzing trace with hash -853963851, now seen corresponding path program 1 times [2019-11-07 00:52:28,102 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:28,103 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69178202] [2019-11-07 00:52:28,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:28,554 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69178202] [2019-11-07 00:52:28,555 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:28,555 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-11-07 00:52:28,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144674822] [2019-11-07 00:52:28,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 00:52:28,556 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:28,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 00:52:28,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:52:28,558 INFO L87 Difference]: Start difference. First operand 724 states and 971 transitions. Second operand 18 states. [2019-11-07 00:52:28,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:28,978 INFO L93 Difference]: Finished difference Result 1249 states and 1659 transitions. [2019-11-07 00:52:28,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-07 00:52:28,979 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 173 [2019-11-07 00:52:28,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:28,985 INFO L225 Difference]: With dead ends: 1249 [2019-11-07 00:52:28,985 INFO L226 Difference]: Without dead ends: 774 [2019-11-07 00:52:28,988 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:52:28,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-11-07 00:52:29,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 770. [2019-11-07 00:52:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2019-11-07 00:52:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1034 transitions. [2019-11-07 00:52:29,026 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1034 transitions. Word has length 173 [2019-11-07 00:52:29,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:29,027 INFO L462 AbstractCegarLoop]: Abstraction has 770 states and 1034 transitions. [2019-11-07 00:52:29,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-07 00:52:29,027 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1034 transitions. [2019-11-07 00:52:29,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-11-07 00:52:29,031 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:29,031 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:29,032 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:29,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:29,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1446160850, now seen corresponding path program 1 times [2019-11-07 00:52:29,032 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:29,033 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593471119] [2019-11-07 00:52:29,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:29,221 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593471119] [2019-11-07 00:52:29,221 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:29,222 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:52:29,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450398533] [2019-11-07 00:52:29,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:52:29,223 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:29,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:52:29,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:52:29,223 INFO L87 Difference]: Start difference. First operand 770 states and 1034 transitions. Second operand 8 states. [2019-11-07 00:52:29,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:29,967 INFO L93 Difference]: Finished difference Result 1455 states and 1940 transitions. [2019-11-07 00:52:29,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:29,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2019-11-07 00:52:29,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:29,977 INFO L225 Difference]: With dead ends: 1455 [2019-11-07 00:52:29,977 INFO L226 Difference]: Without dead ends: 1296 [2019-11-07 00:52:29,979 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:29,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2019-11-07 00:52:30,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1283. [2019-11-07 00:52:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2019-11-07 00:52:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1714 transitions. [2019-11-07 00:52:30,041 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1714 transitions. Word has length 182 [2019-11-07 00:52:30,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:30,042 INFO L462 AbstractCegarLoop]: Abstraction has 1283 states and 1714 transitions. [2019-11-07 00:52:30,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:52:30,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1714 transitions. [2019-11-07 00:52:30,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-11-07 00:52:30,046 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:30,047 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:30,047 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:30,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:30,047 INFO L82 PathProgramCache]: Analyzing trace with hash 108551509, now seen corresponding path program 1 times [2019-11-07 00:52:30,048 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:30,048 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120667122] [2019-11-07 00:52:30,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:30,365 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120667122] [2019-11-07 00:52:30,365 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:30,366 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-11-07 00:52:30,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662710709] [2019-11-07 00:52:30,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-07 00:52:30,368 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:30,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-07 00:52:30,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-11-07 00:52:30,370 INFO L87 Difference]: Start difference. First operand 1283 states and 1714 transitions. Second operand 17 states. [2019-11-07 00:52:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:31,200 INFO L93 Difference]: Finished difference Result 1748 states and 2313 transitions. [2019-11-07 00:52:31,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 00:52:31,200 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 183 [2019-11-07 00:52:31,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:31,208 INFO L225 Difference]: With dead ends: 1748 [2019-11-07 00:52:31,209 INFO L226 Difference]: Without dead ends: 1282 [2019-11-07 00:52:31,211 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:52:31,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2019-11-07 00:52:31,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1281. [2019-11-07 00:52:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2019-11-07 00:52:31,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1709 transitions. [2019-11-07 00:52:31,272 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1709 transitions. Word has length 183 [2019-11-07 00:52:31,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:31,273 INFO L462 AbstractCegarLoop]: Abstraction has 1281 states and 1709 transitions. [2019-11-07 00:52:31,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-07 00:52:31,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1709 transitions. [2019-11-07 00:52:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-11-07 00:52:31,277 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:31,278 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:31,278 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:31,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1143426979, now seen corresponding path program 2 times [2019-11-07 00:52:31,279 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:31,279 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525217248] [2019-11-07 00:52:31,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:31,537 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:31,537 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525217248] [2019-11-07 00:52:31,537 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413781325] [2019-11-07 00:52:31,538 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 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 [2019-11-07 00:52:32,072 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:52:32,072 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:32,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 00:52:32,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:32,407 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:33,008 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:33,008 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-11-07 00:52:33,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070106250] [2019-11-07 00:52:33,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:52:33,009 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:33,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:52:33,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:33,010 INFO L87 Difference]: Start difference. First operand 1281 states and 1709 transitions. Second operand 14 states. [2019-11-07 00:52:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:35,110 INFO L93 Difference]: Finished difference Result 3795 states and 5102 transitions. [2019-11-07 00:52:35,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:52:35,110 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2019-11-07 00:52:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:35,139 INFO L225 Difference]: With dead ends: 3795 [2019-11-07 00:52:35,139 INFO L226 Difference]: Without dead ends: 3788 [2019-11-07 00:52:35,142 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 360 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:52:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2019-11-07 00:52:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 2754. [2019-11-07 00:52:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2754 states. [2019-11-07 00:52:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 3749 transitions. [2019-11-07 00:52:35,395 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 3749 transitions. Word has length 183 [2019-11-07 00:52:35,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:35,396 INFO L462 AbstractCegarLoop]: Abstraction has 2754 states and 3749 transitions. [2019-11-07 00:52:35,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:52:35,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 3749 transitions. [2019-11-07 00:52:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-11-07 00:52:35,410 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:35,411 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:35,622 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:35,622 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:35,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1280740859, now seen corresponding path program 1 times [2019-11-07 00:52:35,624 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:35,624 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29744492] [2019-11-07 00:52:35,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:35,805 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29744492] [2019-11-07 00:52:35,805 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995369194] [2019-11-07 00:52:35,805 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 [2019-11-07 00:52:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:36,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:36,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:36,673 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:36,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:37,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:37,062 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:37,062 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:52:37,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082849740] [2019-11-07 00:52:37,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:37,064 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:37,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:37,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:37,065 INFO L87 Difference]: Start difference. First operand 2754 states and 3749 transitions. Second operand 7 states. [2019-11-07 00:52:38,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:38,621 INFO L93 Difference]: Finished difference Result 5481 states and 7469 transitions. [2019-11-07 00:52:38,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:52:38,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2019-11-07 00:52:38,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:38,640 INFO L225 Difference]: With dead ends: 5481 [2019-11-07 00:52:38,640 INFO L226 Difference]: Without dead ends: 2766 [2019-11-07 00:52:38,650 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 361 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:52:38,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2019-11-07 00:52:38,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2756. [2019-11-07 00:52:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2756 states. [2019-11-07 00:52:38,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 3752 transitions. [2019-11-07 00:52:38,828 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 3752 transitions. Word has length 186 [2019-11-07 00:52:38,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:38,830 INFO L462 AbstractCegarLoop]: Abstraction has 2756 states and 3752 transitions. [2019-11-07 00:52:38,830 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:38,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 3752 transitions. [2019-11-07 00:52:38,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-11-07 00:52:38,840 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:38,841 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:39,049 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:39,049 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:39,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:39,051 INFO L82 PathProgramCache]: Analyzing trace with hash 838404946, now seen corresponding path program 1 times [2019-11-07 00:52:39,051 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:39,051 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480122540] [2019-11-07 00:52:39,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:39,270 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480122540] [2019-11-07 00:52:39,270 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801361455] [2019-11-07 00:52:39,271 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 [2019-11-07 00:52:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:40,022 INFO L256 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:40,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 00:52:40,191 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:40,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:40,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:40,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:40,760 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:40,761 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:40,761 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-11-07 00:52:40,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842980963] [2019-11-07 00:52:40,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:52:40,763 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:40,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:52:40,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:52:40,763 INFO L87 Difference]: Start difference. First operand 2756 states and 3752 transitions. Second operand 9 states. [2019-11-07 00:52:41,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:41,924 INFO L93 Difference]: Finished difference Result 5488 states and 7479 transitions. [2019-11-07 00:52:41,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:52:41,925 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-11-07 00:52:41,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:41,941 INFO L225 Difference]: With dead ends: 5488 [2019-11-07 00:52:41,941 INFO L226 Difference]: Without dead ends: 2774 [2019-11-07 00:52:41,950 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2019-11-07 00:52:42,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2772. [2019-11-07 00:52:42,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2772 states. [2019-11-07 00:52:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 3768 transitions. [2019-11-07 00:52:42,093 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 3768 transitions. Word has length 187 [2019-11-07 00:52:42,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:42,094 INFO L462 AbstractCegarLoop]: Abstraction has 2772 states and 3768 transitions. [2019-11-07 00:52:42,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:52:42,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 3768 transitions. [2019-11-07 00:52:42,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-11-07 00:52:42,102 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:42,102 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-11-07 00:52:42,310 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:42,311 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:42,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:42,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1120969949, now seen corresponding path program 1 times [2019-11-07 00:52:42,312 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:42,312 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057809859] [2019-11-07 00:52:42,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:42,471 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:42,471 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057809859] [2019-11-07 00:52:42,472 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491728462] [2019-11-07 00:52:42,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-07 00:52:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:43,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:43,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:43,312 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:43,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:43,689 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:43,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:43,964 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:43,965 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-11-07 00:52:43,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321831394] [2019-11-07 00:52:43,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:52:43,968 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:43,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:52:43,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:52:43,969 INFO L87 Difference]: Start difference. First operand 2772 states and 3768 transitions. Second operand 16 states. [2019-11-07 00:52:45,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:45,306 INFO L93 Difference]: Finished difference Result 5480 states and 7460 transitions. [2019-11-07 00:52:45,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:45,307 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 188 [2019-11-07 00:52:45,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:45,325 INFO L225 Difference]: With dead ends: 5480 [2019-11-07 00:52:45,325 INFO L226 Difference]: Without dead ends: 2796 [2019-11-07 00:52:45,335 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 360 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:52:45,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2019-11-07 00:52:45,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2794. [2019-11-07 00:52:45,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2794 states. [2019-11-07 00:52:45,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 3793 transitions. [2019-11-07 00:52:45,491 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 3793 transitions. Word has length 188 [2019-11-07 00:52:45,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:45,491 INFO L462 AbstractCegarLoop]: Abstraction has 2794 states and 3793 transitions. [2019-11-07 00:52:45,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:52:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 3793 transitions. [2019-11-07 00:52:45,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-07 00:52:45,501 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:45,502 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-11-07 00:52:45,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:45,710 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:45,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:45,711 INFO L82 PathProgramCache]: Analyzing trace with hash -732746358, now seen corresponding path program 2 times [2019-11-07 00:52:45,711 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:45,711 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670160059] [2019-11-07 00:52:45,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:45,879 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670160059] [2019-11-07 00:52:45,879 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761415234] [2019-11-07 00:52:45,879 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 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 [2019-11-07 00:52:46,502 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:52:46,502 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:46,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 2415 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:46,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:46,602 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:46,602 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:46,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:46,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:46,965 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:46,965 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-11-07 00:52:46,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145323622] [2019-11-07 00:52:46,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:52:46,966 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:46,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:52:46,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:46,967 INFO L87 Difference]: Start difference. First operand 2794 states and 3793 transitions. Second operand 11 states. [2019-11-07 00:52:48,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:48,579 INFO L93 Difference]: Finished difference Result 5265 states and 7119 transitions. [2019-11-07 00:52:48,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:52:48,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 189 [2019-11-07 00:52:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:48,595 INFO L225 Difference]: With dead ends: 5265 [2019-11-07 00:52:48,595 INFO L226 Difference]: Without dead ends: 2595 [2019-11-07 00:52:48,604 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 368 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:52:48,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2019-11-07 00:52:48,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2587. [2019-11-07 00:52:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2019-11-07 00:52:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3462 transitions. [2019-11-07 00:52:48,734 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3462 transitions. Word has length 189 [2019-11-07 00:52:48,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:48,735 INFO L462 AbstractCegarLoop]: Abstraction has 2587 states and 3462 transitions. [2019-11-07 00:52:48,735 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:52:48,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3462 transitions. [2019-11-07 00:52:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-11-07 00:52:48,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:48,745 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-11-07 00:52:48,956 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:48,957 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:48,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:48,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1049435763, now seen corresponding path program 1 times [2019-11-07 00:52:48,957 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:48,958 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136438496] [2019-11-07 00:52:48,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:49,082 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136438496] [2019-11-07 00:52:49,082 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666691641] [2019-11-07 00:52:49,083 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