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 0.1.24-13a467a-m [2019-10-15 01:15:34,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:15:34,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:15:34,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:15:34,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:15:34,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:15:34,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:15:34,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:15:34,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:15:34,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:15:34,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:15:34,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:15:34,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:15:34,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:15:34,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:15:34,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:15:34,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:15:34,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:15:34,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:15:34,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:15:34,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:15:34,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:15:34,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:15:34,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:15:34,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:15:34,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:15:34,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:15:34,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:15:34,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:15:34,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:15:34,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:15:34,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:15:34,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:15:34,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:15:34,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:15:34,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:15:34,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:15:34,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:15:34,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:15:34,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:15:34,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:15:34,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:15:34,775 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:15:34,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:15:34,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:15:34,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:15:34,778 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:15:34,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:15:34,778 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:15:34,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:15:34,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:15:34,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:15:34,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:15:34,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:15:34,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:15:34,780 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:15:34,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:15:34,781 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:15:34,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:15:34,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:15:34,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:15:34,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:15:34,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:15:34,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:34,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:15:34,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:15:34,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:15:34,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:15:34,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:15:34,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:15:34,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:15:35,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:15:35,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:15:35,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:15:35,108 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:15:35,109 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:15:35,110 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2019-10-15 01:15:35,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f688cd697/a2c2a6059dfe4f2d985081b383c10aa4/FLAG3e101a2c5 [2019-10-15 01:15:35,782 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:15:35,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2019-10-15 01:15:35,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f688cd697/a2c2a6059dfe4f2d985081b383c10aa4/FLAG3e101a2c5 [2019-10-15 01:15:36,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f688cd697/a2c2a6059dfe4f2d985081b383c10aa4 [2019-10-15 01:15:36,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:15:36,021 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:15:36,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:36,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:15:36,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:15:36,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:36" (1/1) ... [2019-10-15 01:15:36,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2837cd28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:36, skipping insertion in model container [2019-10-15 01:15:36,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:36" (1/1) ... [2019-10-15 01:15:36,037 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:15:36,120 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:15:36,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:36,996 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:15:37,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:37,225 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:15:37,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:37 WrapperNode [2019-10-15 01:15:37,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:37,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:15:37,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:15:37,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:15:37,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:37" (1/1) ... [2019-10-15 01:15:37,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:37" (1/1) ... [2019-10-15 01:15:37,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:37" (1/1) ... [2019-10-15 01:15:37,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:37" (1/1) ... [2019-10-15 01:15:37,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:37" (1/1) ... [2019-10-15 01:15:37,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:37" (1/1) ... [2019-10-15 01:15:37,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:37" (1/1) ... [2019-10-15 01:15:37,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:15:37,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:15:37,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:15:37,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:15:37,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:15:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:15:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:37,443 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:15:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:15:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:15:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:15:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:15:37,444 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:15:37,445 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:15:37,445 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:15:37,445 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:15:37,445 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:15:37,445 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:15:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:15:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:15:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:15:37,446 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:15:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:15:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:15:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:15:37,447 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:15:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:15:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:15:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:15:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:15:37,448 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:15:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:15:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:15:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:15:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:15:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:15:37,449 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:15:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:15:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:15:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:15:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:15:37,450 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:15:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:15:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:15:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:15:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:15:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:15:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:15:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:15:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:15:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:15:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:15:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:15:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:15:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:15:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:15:37,452 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:15:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:15:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:15:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:15:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:15:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:15:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:15:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:15:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:15:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:15:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:15:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:15:37,454 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:15:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:15:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:15:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:15:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:15:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:15:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:15:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:15:37,455 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:15:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:15:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:15:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:15:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:15:37,456 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:15:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:15:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-15 01:15:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:15:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:15:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:15:37,457 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:15:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:15:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:15:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:15:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:15:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:37,458 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:15:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:15:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:15:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:15:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:15:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:15:37,459 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:15:37,460 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:15:37,460 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:15:37,460 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:15:37,460 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:15:37,460 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:15:37,460 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:15:37,460 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:15:37,460 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:15:37,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:37,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:37,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:37,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:37,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:15:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:15:37,462 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:15:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:15:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:15:37,462 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:15:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:15:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:15:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:15:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:15:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:15:37,463 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:15:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:15:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:15:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:15:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:15:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:15:37,464 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:15:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:15:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:15:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:15:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:15:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:15:37,465 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:15:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:15:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:15:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:15:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:15:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:15:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:15:37,466 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:15:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:15:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:15:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:15:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:15:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:15:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:15:37,467 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:15:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:15:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:15:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:15:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:15:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:15:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:15:37,468 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:15:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:15:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:15:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:15:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:15:37,469 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:15:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:15:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:15:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:15:37,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:15:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:15:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:15:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:15:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:15:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:15:37,471 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:15:37,472 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:15:37,472 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:15:37,472 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:15:37,472 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:15:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:15:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:15:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:15:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:15:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:15:37,473 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:15:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:15:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:15:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:15:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:15:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:15:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:15:37,474 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:15:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:15:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:15:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:15:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:15:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:15:37,475 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:15:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:15:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:15:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:15:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:15:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:15:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:15:37,476 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:15:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:15:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:15:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:15:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:15:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:15:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:15:37,477 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-15 01:15:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:15:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:15:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:15:37,478 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:15:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:15:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:15:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:15:37,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:15:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:15:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:15:37,481 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:15:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:15:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:15:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:15:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:37,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:15:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:15:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:15:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:15:37,483 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:15:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:15:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:15:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:15:37,484 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:15:37,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:15:37,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:15:37,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:39,642 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:39,643 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:39,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:39 BoogieIcfgContainer [2019-10-15 01:15:39,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:39,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:39,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:39,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:39,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:15:36" (1/3) ... [2019-10-15 01:15:39,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a8282a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:39, skipping insertion in model container [2019-10-15 01:15:39,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:37" (2/3) ... [2019-10-15 01:15:39,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a8282a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:39, skipping insertion in model container [2019-10-15 01:15:39,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:39" (3/3) ... [2019-10-15 01:15:39,653 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product28.cil.c [2019-10-15 01:15:39,663 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:39,673 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:39,685 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:39,725 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:39,725 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:39,725 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:39,725 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:39,725 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:39,726 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:39,726 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:39,726 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:39,768 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states. [2019-10-15 01:15:39,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:15:39,792 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:39,793 INFO L380 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] [2019-10-15 01:15:39,795 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:39,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:39,801 INFO L82 PathProgramCache]: Analyzing trace with hash -153424119, now seen corresponding path program 1 times [2019-10-15 01:15:39,809 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:39,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763281079] [2019-10-15 01:15:39,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:39,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:39,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:40,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763281079] [2019-10-15 01:15:40,440 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:40,440 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:40,441 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213440501] [2019-10-15 01:15:40,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:40,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:40,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:40,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:40,475 INFO L87 Difference]: Start difference. First operand 509 states. Second operand 2 states. [2019-10-15 01:15:40,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:40,607 INFO L93 Difference]: Finished difference Result 715 states and 948 transitions. [2019-10-15 01:15:40,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:40,610 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-10-15 01:15:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:40,650 INFO L225 Difference]: With dead ends: 715 [2019-10-15 01:15:40,650 INFO L226 Difference]: Without dead ends: 458 [2019-10-15 01:15:40,661 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:40,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2019-10-15 01:15:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2019-10-15 01:15:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 458 states. [2019-10-15 01:15:40,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 611 transitions. [2019-10-15 01:15:40,773 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 611 transitions. Word has length 164 [2019-10-15 01:15:40,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:40,775 INFO L462 AbstractCegarLoop]: Abstraction has 458 states and 611 transitions. [2019-10-15 01:15:40,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:40,776 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 611 transitions. [2019-10-15 01:15:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 01:15:40,782 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:40,782 INFO L380 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] [2019-10-15 01:15:40,783 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:40,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:40,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1934400744, now seen corresponding path program 1 times [2019-10-15 01:15:40,783 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:40,784 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304915832] [2019-10-15 01:15:40,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:40,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:40,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:41,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304915832] [2019-10-15 01:15:41,075 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:41,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:41,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35523833] [2019-10-15 01:15:41,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:41,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:41,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:41,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:41,079 INFO L87 Difference]: Start difference. First operand 458 states and 611 transitions. Second operand 3 states. [2019-10-15 01:15:41,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:41,171 INFO L93 Difference]: Finished difference Result 698 states and 916 transitions. [2019-10-15 01:15:41,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:41,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-10-15 01:15:41,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:41,179 INFO L225 Difference]: With dead ends: 698 [2019-10-15 01:15:41,180 INFO L226 Difference]: Without dead ends: 461 [2019-10-15 01:15:41,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2019-10-15 01:15:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 460. [2019-10-15 01:15:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2019-10-15 01:15:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 613 transitions. [2019-10-15 01:15:41,235 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 613 transitions. Word has length 165 [2019-10-15 01:15:41,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:41,236 INFO L462 AbstractCegarLoop]: Abstraction has 460 states and 613 transitions. [2019-10-15 01:15:41,236 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:41,236 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 613 transitions. [2019-10-15 01:15:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:15:41,241 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:41,242 INFO L380 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] [2019-10-15 01:15:41,244 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:41,245 INFO L82 PathProgramCache]: Analyzing trace with hash -812491460, now seen corresponding path program 1 times [2019-10-15 01:15:41,245 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:41,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610205550] [2019-10-15 01:15:41,246 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:41,246 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:41,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:41,506 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610205550] [2019-10-15 01:15:41,507 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:41,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:41,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401693400] [2019-10-15 01:15:41,509 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:41,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:41,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:41,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:41,513 INFO L87 Difference]: Start difference. First operand 460 states and 613 transitions. Second operand 3 states. [2019-10-15 01:15:41,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:41,552 INFO L93 Difference]: Finished difference Result 894 states and 1221 transitions. [2019-10-15 01:15:41,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:41,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 01:15:41,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:41,557 INFO L225 Difference]: With dead ends: 894 [2019-10-15 01:15:41,557 INFO L226 Difference]: Without dead ends: 499 [2019-10-15 01:15:41,559 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:41,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-10-15 01:15:41,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 498. [2019-10-15 01:15:41,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2019-10-15 01:15:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 679 transitions. [2019-10-15 01:15:41,583 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 679 transitions. Word has length 171 [2019-10-15 01:15:41,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:41,583 INFO L462 AbstractCegarLoop]: Abstraction has 498 states and 679 transitions. [2019-10-15 01:15:41,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 679 transitions. [2019-10-15 01:15:41,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-15 01:15:41,588 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:41,588 INFO L380 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] [2019-10-15 01:15:41,588 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:41,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:41,589 INFO L82 PathProgramCache]: Analyzing trace with hash -522530241, now seen corresponding path program 1 times [2019-10-15 01:15:41,589 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:41,589 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349655670] [2019-10-15 01:15:41,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:41,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:41,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:41,862 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349655670] [2019-10-15 01:15:41,862 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:41,863 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:15:41,863 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920747387] [2019-10-15 01:15:41,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:41,864 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:41,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:41,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:15:41,865 INFO L87 Difference]: Start difference. First operand 498 states and 679 transitions. Second operand 7 states. [2019-10-15 01:15:44,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:44,855 INFO L93 Difference]: Finished difference Result 954 states and 1267 transitions. [2019-10-15 01:15:44,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:44,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2019-10-15 01:15:44,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:44,861 INFO L225 Difference]: With dead ends: 954 [2019-10-15 01:15:44,862 INFO L226 Difference]: Without dead ends: 733 [2019-10-15 01:15:44,863 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2019-10-15 01:15:44,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 724. [2019-10-15 01:15:44,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2019-10-15 01:15:44,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 971 transitions. [2019-10-15 01:15:44,907 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 971 transitions. Word has length 172 [2019-10-15 01:15:44,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:44,908 INFO L462 AbstractCegarLoop]: Abstraction has 724 states and 971 transitions. [2019-10-15 01:15:44,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 971 transitions. [2019-10-15 01:15:44,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 01:15:44,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:44,914 INFO L380 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] [2019-10-15 01:15:44,914 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:44,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:44,915 INFO L82 PathProgramCache]: Analyzing trace with hash -853963851, now seen corresponding path program 1 times [2019-10-15 01:15:44,915 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:44,915 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24319632] [2019-10-15 01:15:44,916 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:44,916 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:44,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:45,308 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:45,308 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24319632] [2019-10-15 01:15:45,308 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:45,308 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-15 01:15:45,309 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228689885] [2019-10-15 01:15:45,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:15:45,309 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:45,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:15:45,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:15:45,310 INFO L87 Difference]: Start difference. First operand 724 states and 971 transitions. Second operand 18 states. [2019-10-15 01:15:45,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:45,698 INFO L93 Difference]: Finished difference Result 1249 states and 1659 transitions. [2019-10-15 01:15:45,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 01:15:45,699 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 173 [2019-10-15 01:15:45,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:45,704 INFO L225 Difference]: With dead ends: 1249 [2019-10-15 01:15:45,705 INFO L226 Difference]: Without dead ends: 774 [2019-10-15 01:15:45,707 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2019-10-15 01:15:45,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 770. [2019-10-15 01:15:45,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 770 states. [2019-10-15 01:15:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 1034 transitions. [2019-10-15 01:15:45,752 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 1034 transitions. Word has length 173 [2019-10-15 01:15:45,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:45,754 INFO L462 AbstractCegarLoop]: Abstraction has 770 states and 1034 transitions. [2019-10-15 01:15:45,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 01:15:45,754 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 1034 transitions. [2019-10-15 01:15:45,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-15 01:15:45,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:45,759 INFO L380 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] [2019-10-15 01:15:45,759 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:45,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:45,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1446160850, now seen corresponding path program 1 times [2019-10-15 01:15:45,760 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:45,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909688748] [2019-10-15 01:15:45,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:45,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:45,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:46,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909688748] [2019-10-15 01:15:46,012 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:46,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:15:46,013 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573918826] [2019-10-15 01:15:46,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:15:46,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:46,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:15:46,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:15:46,015 INFO L87 Difference]: Start difference. First operand 770 states and 1034 transitions. Second operand 8 states. [2019-10-15 01:15:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:47,003 INFO L93 Difference]: Finished difference Result 1455 states and 1940 transitions. [2019-10-15 01:15:47,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:47,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2019-10-15 01:15:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:47,014 INFO L225 Difference]: With dead ends: 1455 [2019-10-15 01:15:47,015 INFO L226 Difference]: Without dead ends: 1296 [2019-10-15 01:15:47,016 INFO L600 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 [2019-10-15 01:15:47,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2019-10-15 01:15:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1283. [2019-10-15 01:15:47,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2019-10-15 01:15:47,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1714 transitions. [2019-10-15 01:15:47,098 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1714 transitions. Word has length 182 [2019-10-15 01:15:47,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:47,100 INFO L462 AbstractCegarLoop]: Abstraction has 1283 states and 1714 transitions. [2019-10-15 01:15:47,100 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:15:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1714 transitions. [2019-10-15 01:15:47,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-15 01:15:47,104 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:47,105 INFO L380 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] [2019-10-15 01:15:47,105 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:47,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:47,105 INFO L82 PathProgramCache]: Analyzing trace with hash 108551509, now seen corresponding path program 1 times [2019-10-15 01:15:47,106 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:47,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620954150] [2019-10-15 01:15:47,106 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:47,106 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:47,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:47,452 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620954150] [2019-10-15 01:15:47,452 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:47,452 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-15 01:15:47,452 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881900404] [2019-10-15 01:15:47,453 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-15 01:15:47,453 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:47,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-15 01:15:47,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:15:47,454 INFO L87 Difference]: Start difference. First operand 1283 states and 1714 transitions. Second operand 17 states. [2019-10-15 01:15:48,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:48,229 INFO L93 Difference]: Finished difference Result 1748 states and 2313 transitions. [2019-10-15 01:15:48,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 01:15:48,230 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 183 [2019-10-15 01:15:48,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:48,241 INFO L225 Difference]: With dead ends: 1748 [2019-10-15 01:15:48,242 INFO L226 Difference]: Without dead ends: 1282 [2019-10-15 01:15:48,247 INFO L600 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 [2019-10-15 01:15:48,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2019-10-15 01:15:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1281. [2019-10-15 01:15:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2019-10-15 01:15:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1709 transitions. [2019-10-15 01:15:48,331 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1709 transitions. Word has length 183 [2019-10-15 01:15:48,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:48,332 INFO L462 AbstractCegarLoop]: Abstraction has 1281 states and 1709 transitions. [2019-10-15 01:15:48,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-15 01:15:48,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1709 transitions. [2019-10-15 01:15:48,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-15 01:15:48,337 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:48,337 INFO L380 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] [2019-10-15 01:15:48,337 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:48,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:48,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1143426979, now seen corresponding path program 2 times [2019-10-15 01:15:48,338 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:48,338 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525864111] [2019-10-15 01:15:48,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:48,338 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:48,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:48,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525864111] [2019-10-15 01:15:48,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975885174] [2019-10-15 01:15:48,532 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 [2019-10-15 01:15:49,017 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:49,017 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:49,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:15:49,042 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:49,243 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:49,244 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:49,771 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:49,771 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-15 01:15:49,772 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150851850] [2019-10-15 01:15:49,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:49,773 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:49,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:49,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:49,774 INFO L87 Difference]: Start difference. First operand 1281 states and 1709 transitions. Second operand 14 states. [2019-10-15 01:15:51,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:51,747 INFO L93 Difference]: Finished difference Result 3795 states and 5102 transitions. [2019-10-15 01:15:51,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:51,747 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2019-10-15 01:15:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:51,773 INFO L225 Difference]: With dead ends: 3795 [2019-10-15 01:15:51,774 INFO L226 Difference]: Without dead ends: 3788 [2019-10-15 01:15:51,778 INFO L600 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 [2019-10-15 01:15:51,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2019-10-15 01:15:51,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 2754. [2019-10-15 01:15:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2754 states. [2019-10-15 01:15:51,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 3749 transitions. [2019-10-15 01:15:51,940 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 3749 transitions. Word has length 183 [2019-10-15 01:15:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:51,941 INFO L462 AbstractCegarLoop]: Abstraction has 2754 states and 3749 transitions. [2019-10-15 01:15:51,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:51,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 3749 transitions. [2019-10-15 01:15:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-15 01:15:51,949 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:51,949 INFO L380 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] [2019-10-15 01:15:52,156 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:52,157 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:52,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:52,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1280740859, now seen corresponding path program 1 times [2019-10-15 01:15:52,158 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:52,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19240585] [2019-10-15 01:15:52,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:52,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:52,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:52,375 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:52,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19240585] [2019-10-15 01:15:52,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368049638] [2019-10-15 01:15:52,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:52,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:52,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:53,049 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:53,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:53,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:53,399 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:53,400 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:15:53,400 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410432520] [2019-10-15 01:15:53,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:53,401 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:53,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:53,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:15:53,402 INFO L87 Difference]: Start difference. First operand 2754 states and 3749 transitions. Second operand 7 states. [2019-10-15 01:15:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:54,983 INFO L93 Difference]: Finished difference Result 5481 states and 7469 transitions. [2019-10-15 01:15:54,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:15:54,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 186 [2019-10-15 01:15:54,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:55,000 INFO L225 Difference]: With dead ends: 5481 [2019-10-15 01:15:55,000 INFO L226 Difference]: Without dead ends: 2766 [2019-10-15 01:15:55,008 INFO L600 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 [2019-10-15 01:15:55,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2019-10-15 01:15:55,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2756. [2019-10-15 01:15:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2756 states. [2019-10-15 01:15:55,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 3752 transitions. [2019-10-15 01:15:55,141 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 3752 transitions. Word has length 186 [2019-10-15 01:15:55,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:55,143 INFO L462 AbstractCegarLoop]: Abstraction has 2756 states and 3752 transitions. [2019-10-15 01:15:55,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:55,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 3752 transitions. [2019-10-15 01:15:55,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-15 01:15:55,152 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:55,152 INFO L380 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] [2019-10-15 01:15:55,359 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:55,360 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:55,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:55,361 INFO L82 PathProgramCache]: Analyzing trace with hash 838404946, now seen corresponding path program 1 times [2019-10-15 01:15:55,361 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:55,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400790617] [2019-10-15 01:15:55,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:55,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:55,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:55,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400790617] [2019-10-15 01:15:55,516 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847241017] [2019-10-15 01:15:55,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:56,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:56,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-15 01:15:56,321 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:56,669 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:56,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:56,801 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:56,885 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:56,885 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-15 01:15:56,885 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676221691] [2019-10-15 01:15:56,886 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:56,886 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:56,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:56,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:15:56,886 INFO L87 Difference]: Start difference. First operand 2756 states and 3752 transitions. Second operand 9 states. [2019-10-15 01:15:58,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:58,068 INFO L93 Difference]: Finished difference Result 5488 states and 7479 transitions. [2019-10-15 01:15:58,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:58,068 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 187 [2019-10-15 01:15:58,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:58,084 INFO L225 Difference]: With dead ends: 5488 [2019-10-15 01:15:58,085 INFO L226 Difference]: Without dead ends: 2774 [2019-10-15 01:15:58,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 358 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2019-10-15 01:15:58,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2772. [2019-10-15 01:15:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2772 states. [2019-10-15 01:15:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 3768 transitions. [2019-10-15 01:15:58,234 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 3768 transitions. Word has length 187 [2019-10-15 01:15:58,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:58,235 INFO L462 AbstractCegarLoop]: Abstraction has 2772 states and 3768 transitions. [2019-10-15 01:15:58,235 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 3768 transitions. [2019-10-15 01:15:58,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-15 01:15:58,243 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:58,243 INFO L380 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] [2019-10-15 01:15:58,450 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:58,451 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:58,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:58,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1120969949, now seen corresponding path program 1 times [2019-10-15 01:15:58,451 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:58,451 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155821937] [2019-10-15 01:15:58,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:58,452 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:58,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:15:58,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155821937] [2019-10-15 01:15:58,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735903415] [2019-10-15 01:15:58,683 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 [2019-10-15 01:15:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:59,335 INFO L256 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:59,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:15:59,502 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:59,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:59,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:59,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:00,091 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:16:00,092 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:16:00,092 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:16:00,092 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665655019] [2019-10-15 01:16:00,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:16:00,093 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:00,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:16:00,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:16:00,094 INFO L87 Difference]: Start difference. First operand 2772 states and 3768 transitions. Second operand 16 states. [2019-10-15 01:16:01,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:01,469 INFO L93 Difference]: Finished difference Result 5480 states and 7460 transitions. [2019-10-15 01:16:01,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:16:01,469 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 188 [2019-10-15 01:16:01,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:01,484 INFO L225 Difference]: With dead ends: 5480 [2019-10-15 01:16:01,485 INFO L226 Difference]: Without dead ends: 2796 [2019-10-15 01:16:01,493 INFO L600 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 [2019-10-15 01:16:01,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2019-10-15 01:16:01,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2794. [2019-10-15 01:16:01,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2794 states. [2019-10-15 01:16:01,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 3793 transitions. [2019-10-15 01:16:01,636 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 3793 transitions. Word has length 188 [2019-10-15 01:16:01,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:01,636 INFO L462 AbstractCegarLoop]: Abstraction has 2794 states and 3793 transitions. [2019-10-15 01:16:01,636 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:16:01,636 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 3793 transitions. [2019-10-15 01:16:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-15 01:16:01,644 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:01,645 INFO L380 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] [2019-10-15 01:16:01,851 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:01,852 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:01,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:01,852 INFO L82 PathProgramCache]: Analyzing trace with hash -732746358, now seen corresponding path program 2 times [2019-10-15 01:16:01,852 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:01,852 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441713351] [2019-10-15 01:16:01,853 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:01,853 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:01,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:02,000 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:16:02,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441713351] [2019-10-15 01:16:02,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062971266] [2019-10-15 01:16:02,001 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 [2019-10-15 01:16:02,654 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:16:02,654 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:16:02,664 INFO L256 TraceCheckSpWp]: Trace formula consists of 2415 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:16:02,670 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:16:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:16:02,784 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:16:03,093 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:03,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:16:03,207 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:16:03,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-10-15 01:16:03,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080017658] [2019-10-15 01:16:03,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:16:03,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:03,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:16:03,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:16:03,212 INFO L87 Difference]: Start difference. First operand 2794 states and 3793 transitions. Second operand 11 states. [2019-10-15 01:16:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:04,633 INFO L93 Difference]: Finished difference Result 5265 states and 7119 transitions. [2019-10-15 01:16:04,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:16:04,634 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 189 [2019-10-15 01:16:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:04,648 INFO L225 Difference]: With dead ends: 5265 [2019-10-15 01:16:04,648 INFO L226 Difference]: Without dead ends: 2595 [2019-10-15 01:16:04,656 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 368 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:16:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2019-10-15 01:16:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2587. [2019-10-15 01:16:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2019-10-15 01:16:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3462 transitions. [2019-10-15 01:16:04,779 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3462 transitions. Word has length 189 [2019-10-15 01:16:04,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:04,780 INFO L462 AbstractCegarLoop]: Abstraction has 2587 states and 3462 transitions. [2019-10-15 01:16:04,780 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:16:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3462 transitions. [2019-10-15 01:16:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-15 01:16:04,787 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:04,787 INFO L380 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] [2019-10-15 01:16:04,995 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:04,995 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:04,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1049435763, now seen corresponding path program 1 times [2019-10-15 01:16:04,996 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:04,996 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226887322] [2019-10-15 01:16:04,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:04,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:04,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:16:05,116 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226887322] [2019-10-15 01:16:05,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446299888] [2019-10-15 01:16:05,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:05,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:16:05,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:16:05,918 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:16:05,919 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:16:06,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:16:06,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:06,333 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:16:06,447 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:16:06,447 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 20 [2019-10-15 01:16:06,447 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502070309] [2019-10-15 01:16:06,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:16:06,449 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:06,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:16:06,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:16:06,450 INFO L87 Difference]: Start difference. First operand 2587 states and 3462 transitions. Second operand 15 states. [2019-10-15 01:16:08,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:08,111 INFO L93 Difference]: Finished difference Result 5066 states and 6796 transitions. [2019-10-15 01:16:08,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:16:08,112 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 190 [2019-10-15 01:16:08,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:08,127 INFO L225 Difference]: With dead ends: 5066 [2019-10-15 01:16:08,127 INFO L226 Difference]: Without dead ends: 2593 [2019-10-15 01:16:08,139 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 364 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:16:08,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2019-10-15 01:16:08,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 2587. [2019-10-15 01:16:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2019-10-15 01:16:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3460 transitions. [2019-10-15 01:16:08,250 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3460 transitions. Word has length 190 [2019-10-15 01:16:08,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:08,250 INFO L462 AbstractCegarLoop]: Abstraction has 2587 states and 3460 transitions. [2019-10-15 01:16:08,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:16:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3460 transitions. [2019-10-15 01:16:08,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-15 01:16:08,256 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:08,256 INFO L380 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, 1, 1, 1] [2019-10-15 01:16:08,463 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:08,463 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:08,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:08,464 INFO L82 PathProgramCache]: Analyzing trace with hash -457213921, now seen corresponding path program 1 times [2019-10-15 01:16:08,464 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:08,464 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092867329] [2019-10-15 01:16:08,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:08,464 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:08,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:16:08,636 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092867329] [2019-10-15 01:16:08,636 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049437021] [2019-10-15 01:16:08,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:09,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:09,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:16:09,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:16:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:16:09,214 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:16:09,373 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:16:09,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [665286473] [2019-10-15 01:16:09,380 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 192