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_spec9_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:18:06,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:18:06,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:18:06,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:18:06,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:18:06,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:18:06,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:18:06,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:18:06,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:18:06,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:18:06,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:18:06,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:18:06,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:18:06,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:18:06,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:18:06,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:18:06,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:18:06,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:18:06,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:18:06,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:18:06,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:18:06,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:18:06,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:18:06,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:18:06,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:18:06,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:18:06,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:18:06,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:18:06,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:18:06,897 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:18:06,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:18:06,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:18:06,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:18:06,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:18:06,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:18:06,902 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:18:06,903 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:18:06,903 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:18:06,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:18:06,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:18:06,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:18:06,906 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 01:18:06,933 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:18:06,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:18:06,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:18:06,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:18:06,935 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:18:06,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:18:06,935 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:18:06,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:18:06,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:18:06,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:18:06,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:18:06,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:18:06,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:18:06,937 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:18:06,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:18:06,937 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:18:06,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:18:06,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:18:06,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:18:06,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:18:06,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:18:06,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:18:06,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:18:06,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:18:06,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:18:06,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:18:06,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:18:06,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:18:06,940 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 01:18:07,223 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:18:07,239 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:18:07,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:18:07,244 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:18:07,245 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:18:07,246 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product22.cil.c [2019-10-15 01:18:07,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0237ab41/ea5020cd29534e80a7d68e1d4977e9ab/FLAG382164a40 [2019-10-15 01:18:08,000 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:18:08,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product22.cil.c [2019-10-15 01:18:08,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0237ab41/ea5020cd29534e80a7d68e1d4977e9ab/FLAG382164a40 [2019-10-15 01:18:08,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0237ab41/ea5020cd29534e80a7d68e1d4977e9ab [2019-10-15 01:18:08,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:18:08,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:18:08,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:18:08,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:18:08,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:18:08,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:18:08" (1/1) ... [2019-10-15 01:18:08,186 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 01:18:08, skipping insertion in model container [2019-10-15 01:18:08,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:18:08" (1/1) ... [2019-10-15 01:18:08,195 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:18:08,282 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:18:09,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:18:09,135 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:18:09,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:18:09,380 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:18:09,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:09 WrapperNode [2019-10-15 01:18:09,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:18:09,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:18:09,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:18:09,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:18:09,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:09" (1/1) ... [2019-10-15 01:18:09,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:09" (1/1) ... [2019-10-15 01:18:09,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:09" (1/1) ... [2019-10-15 01:18:09,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:09" (1/1) ... [2019-10-15 01:18:09,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:09" (1/1) ... [2019-10-15 01:18:09,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:09" (1/1) ... [2019-10-15 01:18:09,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:09" (1/1) ... [2019-10-15 01:18:09,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:18:09,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:18:09,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:18:09,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:18:09,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:09" (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 01:18:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:18:09,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:18:09,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:18:09,680 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:18:09,680 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:18:09,680 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:18:09,681 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:18:09,681 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:18:09,681 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:18:09,681 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:18:09,682 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:18:09,682 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:18:09,682 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:18:09,682 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:18:09,682 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:18:09,682 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:18:09,683 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:18:09,683 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:18:09,683 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:18:09,683 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:18:09,684 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:18:09,684 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:18:09,684 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:18:09,685 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:18:09,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:18:09,685 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:18:09,685 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:18:09,685 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:18:09,686 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:18:09,686 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:18:09,686 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:18:09,686 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:18:09,686 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:18:09,686 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:18:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:18:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:18:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:18:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:18:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:18:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:18:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:18:09,687 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:18:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:18:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:18:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:18:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:18:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:18:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:18:09,688 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:18:09,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:18:09,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:18:09,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:18:09,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:18:09,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:18:09,689 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:18:09,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:18:09,690 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:18:09,690 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:18:09,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:18:09,690 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:18:09,690 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:18:09,690 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:18:09,691 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:18:09,691 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:18:09,691 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:18:09,691 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-15 01:18:09,691 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:18:09,691 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:18:09,692 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:18:09,692 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:18:09,692 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:18:09,692 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:18:09,692 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:18:09,692 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:18:09,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:18:09,693 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:18:09,693 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:18:09,693 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:18:09,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:18:09,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:18:09,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:18:09,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:18:09,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:18:09,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:18:09,694 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:18:09,694 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:18:09,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:18:09,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:18:09,695 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:18:09,695 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:18:09,695 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:18:09,695 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:18:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:18:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:18:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:18:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:18:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:18:09,696 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:18:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:18:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:18:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:18:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:18:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:18:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:18:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:18:09,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:18:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 01:18:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 01:18:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:18:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:18:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:18:09,698 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:18:09,699 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:18:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:18:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:18:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:18:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:18:09,699 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:18:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:18:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:18:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:18:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:18:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:18:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:18:09,700 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:18:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:18:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:18:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:18:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:18:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:18:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:18:09,701 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:18:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:18:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:18:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:18:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:18:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:18:09,702 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:18:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:18:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:18:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:18:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:18:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:18:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:18:09,703 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:18:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:18:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:18:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:18:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:18:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:18:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:18:09,704 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:18:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:18:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:18:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:18:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:18:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:18:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:18:09,705 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:18:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:18:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:18:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:18:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:18:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:18:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:18:09,706 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:18:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:18:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:18:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:18:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:18:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:18:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:18:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:18:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:18:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:18:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:18:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:18:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:18:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:18:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:18:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:18:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:18:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:18:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:18:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:18:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:18:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:18:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:18:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:18:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:18:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:18:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:18:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:18:09,710 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:18:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:18:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:18:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:18:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:18:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:18:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 01:18:09,711 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:18:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:18:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-15 01:18:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:18:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 01:18:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:18:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:18:09,712 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:18:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:18:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:18:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:18:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:18:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:18:09,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:18:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:18:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:18:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:18:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:18:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:18:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:18:09,714 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:18:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:18:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:18:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:18:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:18:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:18:09,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:18:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:18:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:18:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:18:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:18:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:18:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:18:09,716 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:18:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:18:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:18:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:18:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:18:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:18:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:18:09,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:18:11,612 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:18:11,613 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:18:11,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:18:11 BoogieIcfgContainer [2019-10-15 01:18:11,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:18:11,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:18:11,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:18:11,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:18:11,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:18:08" (1/3) ... [2019-10-15 01:18:11,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6810fc4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:18:11, skipping insertion in model container [2019-10-15 01:18:11,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:09" (2/3) ... [2019-10-15 01:18:11,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6810fc4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:18:11, skipping insertion in model container [2019-10-15 01:18:11,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:18:11" (3/3) ... [2019-10-15 01:18:11,623 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product22.cil.c [2019-10-15 01:18:11,635 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:18:11,647 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:18:11,659 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:18:11,708 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:18:11,708 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:18:11,708 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:18:11,709 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:18:11,709 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:18:11,709 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:18:11,709 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:18:11,710 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:18:11,754 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states. [2019-10-15 01:18:11,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 01:18:11,787 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:11,789 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:11,793 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:11,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:11,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1826249356, now seen corresponding path program 1 times [2019-10-15 01:18:11,818 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:11,818 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857329507] [2019-10-15 01:18:11,819 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:11,819 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:11,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:12,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857329507] [2019-10-15 01:18:12,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:12,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:18:12,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548857373] [2019-10-15 01:18:12,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:18:12,516 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:12,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:18:12,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:18:12,533 INFO L87 Difference]: Start difference. First operand 512 states. Second operand 2 states. [2019-10-15 01:18:12,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:12,616 INFO L93 Difference]: Finished difference Result 755 states and 991 transitions. [2019-10-15 01:18:12,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:18:12,617 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-10-15 01:18:12,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:12,639 INFO L225 Difference]: With dead ends: 755 [2019-10-15 01:18:12,639 INFO L226 Difference]: Without dead ends: 489 [2019-10-15 01:18:12,646 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 01:18:12,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2019-10-15 01:18:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2019-10-15 01:18:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-10-15 01:18:12,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 647 transitions. [2019-10-15 01:18:12,736 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 647 transitions. Word has length 145 [2019-10-15 01:18:12,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:12,738 INFO L462 AbstractCegarLoop]: Abstraction has 489 states and 647 transitions. [2019-10-15 01:18:12,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:18:12,739 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 647 transitions. [2019-10-15 01:18:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 01:18:12,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:12,743 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:12,744 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:12,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1826131323, now seen corresponding path program 1 times [2019-10-15 01:18:12,745 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:12,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134970239] [2019-10-15 01:18:12,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:12,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:12,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:13,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134970239] [2019-10-15 01:18:13,023 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:13,023 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:13,024 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885962735] [2019-10-15 01:18:13,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:13,032 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:13,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:13,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:13,033 INFO L87 Difference]: Start difference. First operand 489 states and 647 transitions. Second operand 3 states. [2019-10-15 01:18:13,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:13,110 INFO L93 Difference]: Finished difference Result 738 states and 960 transitions. [2019-10-15 01:18:13,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:13,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-10-15 01:18:13,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:13,122 INFO L225 Difference]: With dead ends: 738 [2019-10-15 01:18:13,122 INFO L226 Difference]: Without dead ends: 492 [2019-10-15 01:18:13,129 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 01:18:13,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-15 01:18:13,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2019-10-15 01:18:13,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-10-15 01:18:13,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 649 transitions. [2019-10-15 01:18:13,161 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 649 transitions. Word has length 146 [2019-10-15 01:18:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:13,162 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 649 transitions. [2019-10-15 01:18:13,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:13,162 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 649 transitions. [2019-10-15 01:18:13,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:18:13,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:13,167 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:13,167 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:13,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:13,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1246469625, now seen corresponding path program 1 times [2019-10-15 01:18:13,168 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:13,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920425385] [2019-10-15 01:18:13,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:13,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:13,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:13,368 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:13,369 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920425385] [2019-10-15 01:18:13,369 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:13,369 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:13,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934213264] [2019-10-15 01:18:13,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:13,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:13,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:13,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:13,375 INFO L87 Difference]: Start difference. First operand 491 states and 649 transitions. Second operand 3 states. [2019-10-15 01:18:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:13,419 INFO L93 Difference]: Finished difference Result 960 states and 1299 transitions. [2019-10-15 01:18:13,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:13,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-15 01:18:13,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:13,424 INFO L225 Difference]: With dead ends: 960 [2019-10-15 01:18:13,425 INFO L226 Difference]: Without dead ends: 534 [2019-10-15 01:18:13,427 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 01:18:13,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2019-10-15 01:18:13,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 533. [2019-10-15 01:18:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 533 states. [2019-10-15 01:18:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 721 transitions. [2019-10-15 01:18:13,474 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 721 transitions. Word has length 158 [2019-10-15 01:18:13,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:13,476 INFO L462 AbstractCegarLoop]: Abstraction has 533 states and 721 transitions. [2019-10-15 01:18:13,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:13,477 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 721 transitions. [2019-10-15 01:18:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 01:18:13,486 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:13,486 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:13,486 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:13,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:13,487 INFO L82 PathProgramCache]: Analyzing trace with hash -482863348, now seen corresponding path program 1 times [2019-10-15 01:18:13,487 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:13,487 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082136068] [2019-10-15 01:18:13,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:13,491 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:13,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:13,670 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:13,671 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082136068] [2019-10-15 01:18:13,671 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:13,671 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:13,672 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886070862] [2019-10-15 01:18:13,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:13,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:13,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:13,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:13,674 INFO L87 Difference]: Start difference. First operand 533 states and 721 transitions. Second operand 3 states. [2019-10-15 01:18:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:13,722 INFO L93 Difference]: Finished difference Result 1083 states and 1510 transitions. [2019-10-15 01:18:13,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:13,723 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-15 01:18:13,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:13,728 INFO L225 Difference]: With dead ends: 1083 [2019-10-15 01:18:13,729 INFO L226 Difference]: Without dead ends: 615 [2019-10-15 01:18:13,731 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 01:18:13,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-15 01:18:13,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 614. [2019-10-15 01:18:13,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-10-15 01:18:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 859 transitions. [2019-10-15 01:18:13,756 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 859 transitions. Word has length 159 [2019-10-15 01:18:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:13,757 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 859 transitions. [2019-10-15 01:18:13,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:13,757 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 859 transitions. [2019-10-15 01:18:13,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 01:18:13,761 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:13,762 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:13,762 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:13,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:13,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1145624437, now seen corresponding path program 1 times [2019-10-15 01:18:13,763 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:13,763 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516174522] [2019-10-15 01:18:13,763 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:13,763 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:13,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:18:13,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516174522] [2019-10-15 01:18:13,970 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:13,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:13,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10678935] [2019-10-15 01:18:13,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:13,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:13,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:13,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:13,973 INFO L87 Difference]: Start difference. First operand 614 states and 859 transitions. Second operand 3 states. [2019-10-15 01:18:14,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:14,080 INFO L93 Difference]: Finished difference Result 924 states and 1264 transitions. [2019-10-15 01:18:14,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:14,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-15 01:18:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:14,085 INFO L225 Difference]: With dead ends: 924 [2019-10-15 01:18:14,085 INFO L226 Difference]: Without dead ends: 680 [2019-10-15 01:18:14,087 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 01:18:14,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2019-10-15 01:18:14,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 680. [2019-10-15 01:18:14,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2019-10-15 01:18:14,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 947 transitions. [2019-10-15 01:18:14,120 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 947 transitions. Word has length 162 [2019-10-15 01:18:14,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:14,121 INFO L462 AbstractCegarLoop]: Abstraction has 680 states and 947 transitions. [2019-10-15 01:18:14,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:14,121 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 947 transitions. [2019-10-15 01:18:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-10-15 01:18:14,127 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:14,127 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:14,127 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:14,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:14,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1133524497, now seen corresponding path program 1 times [2019-10-15 01:18:14,128 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:14,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712085798] [2019-10-15 01:18:14,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:14,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:14,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:14,796 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-15 01:18:14,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712085798] [2019-10-15 01:18:14,797 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213175610] [2019-10-15 01:18:14,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:15,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:15,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-15 01:18:15,975 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:16,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:16,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:16,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:17,034 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-15 01:18:17,034 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:18:17,035 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-15 01:18:17,035 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51517101] [2019-10-15 01:18:17,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:18:17,036 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:17,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:18:17,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:17,038 INFO L87 Difference]: Start difference. First operand 680 states and 947 transitions. Second operand 9 states. [2019-10-15 01:18:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:18,931 INFO L93 Difference]: Finished difference Result 1338 states and 1874 transitions. [2019-10-15 01:18:18,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:18:18,931 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 280 [2019-10-15 01:18:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:18,936 INFO L225 Difference]: With dead ends: 1338 [2019-10-15 01:18:18,936 INFO L226 Difference]: Without dead ends: 694 [2019-10-15 01:18:18,940 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 549 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:18:18,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2019-10-15 01:18:18,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2019-10-15 01:18:18,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-10-15 01:18:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 965 transitions. [2019-10-15 01:18:18,973 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 965 transitions. Word has length 280 [2019-10-15 01:18:18,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:18,974 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 965 transitions. [2019-10-15 01:18:18,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:18:18,974 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 965 transitions. [2019-10-15 01:18:18,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-10-15 01:18:18,980 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:18,981 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:19,189 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:19,190 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:19,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:19,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2014136460, now seen corresponding path program 1 times [2019-10-15 01:18:19,191 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:19,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326465548] [2019-10-15 01:18:19,191 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:19,192 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:19,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-15 01:18:19,865 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326465548] [2019-10-15 01:18:19,865 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688199628] [2019-10-15 01:18:19,866 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 01:18:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:20,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:20,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:20,750 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-15 01:18:20,751 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:21,301 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:21,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-15 01:18:21,443 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:18:21,444 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-15 01:18:21,444 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249231997] [2019-10-15 01:18:21,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:18:21,445 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:21,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:18:21,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:18:21,446 INFO L87 Difference]: Start difference. First operand 694 states and 965 transitions. Second operand 7 states. [2019-10-15 01:18:22,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:22,797 INFO L93 Difference]: Finished difference Result 1339 states and 1880 transitions. [2019-10-15 01:18:22,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:18:22,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2019-10-15 01:18:22,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:22,803 INFO L225 Difference]: With dead ends: 1339 [2019-10-15 01:18:22,803 INFO L226 Difference]: Without dead ends: 696 [2019-10-15 01:18:22,806 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 556 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:18:22,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2019-10-15 01:18:22,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2019-10-15 01:18:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2019-10-15 01:18:22,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 968 transitions. [2019-10-15 01:18:22,855 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 968 transitions. Word has length 281 [2019-10-15 01:18:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:22,856 INFO L462 AbstractCegarLoop]: Abstraction has 696 states and 968 transitions. [2019-10-15 01:18:22,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:18:22,856 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 968 transitions. [2019-10-15 01:18:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-10-15 01:18:22,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:22,862 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:23,074 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:23,075 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:23,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:23,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1456621325, now seen corresponding path program 1 times [2019-10-15 01:18:23,076 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:23,077 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554868541] [2019-10-15 01:18:23,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:23,077 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:23,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-15 01:18:23,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554868541] [2019-10-15 01:18:23,554 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535137131] [2019-10-15 01:18:23,554 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 01:18:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:24,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 3067 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:24,249 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-15 01:18:24,466 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:24,969 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:25,068 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:25,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-15 01:18:25,332 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:25,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-15 01:18:25,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310109907] [2019-10-15 01:18:25,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:18:25,335 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:25,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:18:25,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 01:18:25,336 INFO L87 Difference]: Start difference. First operand 696 states and 968 transitions. Second operand 16 states. [2019-10-15 01:18:27,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:27,523 INFO L93 Difference]: Finished difference Result 1343 states and 1878 transitions. [2019-10-15 01:18:27,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:27,524 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 282 [2019-10-15 01:18:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:27,533 INFO L225 Difference]: With dead ends: 1343 [2019-10-15 01:18:27,533 INFO L226 Difference]: Without dead ends: 708 [2019-10-15 01:18:27,536 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 553 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 01:18:27,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-10-15 01:18:27,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 706. [2019-10-15 01:18:27,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-10-15 01:18:27,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 979 transitions. [2019-10-15 01:18:27,589 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 979 transitions. Word has length 282 [2019-10-15 01:18:27,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:27,590 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 979 transitions. [2019-10-15 01:18:27,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:18:27,590 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 979 transitions. [2019-10-15 01:18:27,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-10-15 01:18:27,600 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:27,600 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:27,810 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:27,810 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:27,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:27,811 INFO L82 PathProgramCache]: Analyzing trace with hash -428837282, now seen corresponding path program 2 times [2019-10-15 01:18:27,811 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:27,812 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382244920] [2019-10-15 01:18:27,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:27,812 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:27,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-15 01:18:28,311 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382244920] [2019-10-15 01:18:28,312 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913244563] [2019-10-15 01:18:28,312 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:28,925 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:18:28,925 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:28,933 INFO L256 TraceCheckSpWp]: Trace formula consists of 2357 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:28,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:29,214 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-15 01:18:29,215 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:29,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:29,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-15 01:18:29,861 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:29,861 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-15 01:18:29,862 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327104455] [2019-10-15 01:18:29,863 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:18:29,863 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:29,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:18:29,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:18:29,864 INFO L87 Difference]: Start difference. First operand 706 states and 979 transitions. Second operand 12 states. [2019-10-15 01:18:31,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:31,078 INFO L93 Difference]: Finished difference Result 1334 states and 1866 transitions. [2019-10-15 01:18:31,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:31,079 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 283 [2019-10-15 01:18:31,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:31,086 INFO L225 Difference]: With dead ends: 1334 [2019-10-15 01:18:31,086 INFO L226 Difference]: Without dead ends: 708 [2019-10-15 01:18:31,090 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 560 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:31,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-10-15 01:18:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 706. [2019-10-15 01:18:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-10-15 01:18:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 978 transitions. [2019-10-15 01:18:31,131 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 978 transitions. Word has length 283 [2019-10-15 01:18:31,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:31,132 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 978 transitions. [2019-10-15 01:18:31,132 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:18:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 978 transitions. [2019-10-15 01:18:31,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-10-15 01:18:31,136 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:31,136 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:31,345 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:31,345 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:31,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:31,346 INFO L82 PathProgramCache]: Analyzing trace with hash -420119341, now seen corresponding path program 3 times [2019-10-15 01:18:31,347 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:31,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929304484] [2019-10-15 01:18:31,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:31,348 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:31,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:31,899 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-15 01:18:31,899 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929304484] [2019-10-15 01:18:31,900 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551075235] [2019-10-15 01:18:31,900 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:32,520 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:18:32,521 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:32,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:32,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-15 01:18:32,756 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:33,280 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:33,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:33,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:33,642 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-15 01:18:33,642 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:33,643 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-15 01:18:33,643 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479074592] [2019-10-15 01:18:33,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:18:33,644 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:33,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:18:33,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:33,645 INFO L87 Difference]: Start difference. First operand 706 states and 978 transitions. Second operand 15 states. [2019-10-15 01:18:35,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:35,460 INFO L93 Difference]: Finished difference Result 1341 states and 1873 transitions. [2019-10-15 01:18:35,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:35,460 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 284 [2019-10-15 01:18:35,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:35,467 INFO L225 Difference]: With dead ends: 1341 [2019-10-15 01:18:35,467 INFO L226 Difference]: Without dead ends: 710 [2019-10-15 01:18:35,470 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 557 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:18:35,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2019-10-15 01:18:35,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 706. [2019-10-15 01:18:35,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2019-10-15 01:18:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 977 transitions. [2019-10-15 01:18:35,500 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 977 transitions. Word has length 284 [2019-10-15 01:18:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:35,500 INFO L462 AbstractCegarLoop]: Abstraction has 706 states and 977 transitions. [2019-10-15 01:18:35,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:18:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 977 transitions. [2019-10-15 01:18:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-10-15 01:18:35,506 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:35,506 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:35,720 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:35,720 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:35,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1473254531, now seen corresponding path program 1 times [2019-10-15 01:18:35,722 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:35,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373471394] [2019-10-15 01:18:35,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:35,723 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:35,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:36,209 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-15 01:18:36,209 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373471394] [2019-10-15 01:18:36,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077480801] [2019-10-15 01:18:36,210 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 01:18:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:36,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:37,001 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:37,153 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-15 01:18:37,154 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:37,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:37,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:37,776 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-15 01:18:37,776 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:37,777 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-15 01:18:37,777 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660466233] [2019-10-15 01:18:37,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:18:37,778 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:37,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:18:37,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:18:37,779 INFO L87 Difference]: Start difference. First operand 706 states and 977 transitions. Second operand 11 states. [2019-10-15 01:18:39,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:39,177 INFO L93 Difference]: Finished difference Result 1338 states and 1870 transitions. [2019-10-15 01:18:39,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:39,178 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 285 [2019-10-15 01:18:39,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:39,183 INFO L225 Difference]: With dead ends: 1338 [2019-10-15 01:18:39,183 INFO L226 Difference]: Without dead ends: 712 [2019-10-15 01:18:39,186 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 564 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 01:18:39,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2019-10-15 01:18:39,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 708. [2019-10-15 01:18:39,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 708 states. [2019-10-15 01:18:39,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 980 transitions. [2019-10-15 01:18:39,215 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 980 transitions. Word has length 285 [2019-10-15 01:18:39,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:39,215 INFO L462 AbstractCegarLoop]: Abstraction has 708 states and 980 transitions. [2019-10-15 01:18:39,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:18:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 980 transitions. [2019-10-15 01:18:39,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-15 01:18:39,220 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:39,221 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:39,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:39,430 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:39,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:39,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1573060947, now seen corresponding path program 1 times [2019-10-15 01:18:39,431 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:39,431 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173153157] [2019-10-15 01:18:39,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:39,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:39,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2019-10-15 01:18:39,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173153157] [2019-10-15 01:18:39,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073943531] [2019-10-15 01:18:39,971 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 01:18:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:40,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:18:40,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-10-15 01:18:40,765 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-15 01:18:41,160 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1627064616] [2019-10-15 01:18:41,166 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 287 [2019-10-15 01:18:41,210 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:18:41,211 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:18:41,321 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-15 01:18:41,323 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 203 root evaluator evaluations with a maximum evaluation depth of 0. Performed 203 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 378 variables. [2019-10-15 01:18:41,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:41,326 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-15 01:18:41,421 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-10-15 01:18:41,422 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-15 01:18:41,432 INFO L553 sIntCurrentIteration]: We unified 285 AI predicates to 285 [2019-10-15 01:18:41,436 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-15 01:18:41,437 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:18:41,438 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [22, 4, 4] total 26 [2019-10-15 01:18:41,439 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781560625] [2019-10-15 01:18:41,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:18:41,443 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:41,444 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-15 01:18:41,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:18:41,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:18:41,445 INFO L87 Difference]: Start difference. First operand 708 states and 980 transitions. Second operand 2 states. [2019-10-15 01:18:41,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:41,460 INFO L93 Difference]: Finished difference Result 708 states and 980 transitions. [2019-10-15 01:18:41,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:18:41,460 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 286 [2019-10-15 01:18:41,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:41,460 INFO L225 Difference]: With dead ends: 708 [2019-10-15 01:18:41,461 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:18:41,463 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 285 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 01:18:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:18:41,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:18:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:18:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:18:41,464 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 286 [2019-10-15 01:18:41,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:41,464 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:18:41,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:18:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:18:41,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:18:41,674 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:41,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.