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_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:19:03,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:19:03,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:19:03,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:19:03,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:19:03,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:19:03,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:19:03,070 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:19:03,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:19:03,073 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:19:03,074 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:19:03,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:19:03,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:19:03,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:19:03,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:19:03,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:19:03,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:19:03,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:19:03,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:19:03,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:19:03,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:19:03,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:19:03,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:19:03,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:19:03,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:19:03,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:19:03,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:19:03,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:19:03,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:19:03,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:19:03,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:19:03,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:19:03,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:19:03,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:19:03,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:19:03,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:19:03,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:19:03,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:19:03,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:19:03,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:19:03,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:19:03,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:19:03,140 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:19:03,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:19:03,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:19:03,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:19:03,142 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:19:03,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:19:03,142 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:19:03,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:19:03,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:19:03,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:19:03,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:19:03,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:19:03,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:19:03,144 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:19:03,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:19:03,144 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:19:03,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:19:03,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:19:03,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:19:03,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:19:03,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:19:03,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:03,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:19:03,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:19:03,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:19:03,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:19:03,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:19:03,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:19:03,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:19:03,432 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:19:03,448 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:19:03,452 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:19:03,454 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:19:03,454 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:19:03,455 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product21.cil.c [2019-10-13 21:19:03,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76deb158d/4c24d4cd7ae341b2a516f22d241c08ef/FLAG6c646d7a7 [2019-10-13 21:19:04,135 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:19:04,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product21.cil.c [2019-10-13 21:19:04,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76deb158d/4c24d4cd7ae341b2a516f22d241c08ef/FLAG6c646d7a7 [2019-10-13 21:19:04,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76deb158d/4c24d4cd7ae341b2a516f22d241c08ef [2019-10-13 21:19:04,385 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:19:04,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:19:04,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:04,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:19:04,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:19:04,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:04" (1/1) ... [2019-10-13 21:19:04,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321e043c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:04, skipping insertion in model container [2019-10-13 21:19:04,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:04" (1/1) ... [2019-10-13 21:19:04,401 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:19:04,482 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:19:05,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:05,374 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:19:05,490 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:05,574 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:19:05,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05 WrapperNode [2019-10-13 21:19:05,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:05,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:19:05,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:19:05,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:19:05,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... [2019-10-13 21:19:05,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:19:05,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:19:05,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:19:05,782 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:19:05,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:05,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:19:05,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:19:05,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:05,869 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:19:05,869 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:19:05,870 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:19:05,871 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:19:05,871 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:19:05,872 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-13 21:19:05,872 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:19:05,873 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:19:05,873 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:19:05,873 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:19:05,874 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:19:05,874 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:19:05,874 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:19:05,877 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:19:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:19:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:19:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:19:05,878 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:19:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:19:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:19:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:19:05,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:19:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:19:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:19:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:19:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:19:05,880 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:19:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:19:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:19:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:19:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:19:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:19:05,881 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:19:05,882 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:19:05,882 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:19:05,883 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:19:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:19:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:19:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:19:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:19:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:19:05,884 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:19:05,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:19:05,885 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:19:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:19:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:19:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:19:05,886 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:19:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:19:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:19:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:19:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:19:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:19:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:19:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:19:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:19:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:19:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:19:05,888 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:19:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:19:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:19:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:19:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:19:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:19:05,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:19:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:19:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:19:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:19:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:19:05,890 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:19:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:19:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:19:05,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:19:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:19:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:19:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:19:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:19:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:19:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:19:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:19:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:05,894 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:19:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:19:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:19:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:19:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:19:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:19:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:19:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:19:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:19:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:19:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:19:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:19:05,897 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:19:05,898 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:19:05,898 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:19:05,898 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:19:05,898 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:19:05,898 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:19:05,898 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:19:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:19:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:19:05,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:19:05,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:19:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:19:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:19:05,900 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:19:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:19:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:19:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:19:05,901 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:19:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:19:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:19:05,902 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:19:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:19:05,903 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:19:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:19:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:19:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:19:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:19:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:19:05,904 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:19:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:19:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:19:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:19:05,905 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:19:05,906 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:19:05,906 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:19:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:19:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:19:05,910 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:19:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:19:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:19:05,911 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:19:05,912 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:19:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:19:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:19:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:19:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:19:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:19:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:19:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:19:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-13 21:19:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:19:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:19:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:19:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:19:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:19:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:19:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:19:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:19:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:19:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:19:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:19:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:19:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:19:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:19:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:19:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:19:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:19:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:19:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:19:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:19:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:19:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:19:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:19:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:19:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:19:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:19:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:19:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:19:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:19:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:19:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:19:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:19:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:19:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:19:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:19:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:19:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:19:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:19:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:19:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:19:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:19:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:19:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:19:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:19:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:19:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:19:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:19:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:19:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:19:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:19:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:19:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:19:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:19:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:19:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:19:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:19:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:19:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:19:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:19:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:19:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:19:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:19:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:19:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:19:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:19:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:19:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:19:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:19:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:19:05,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:19:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:19:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:19:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:19:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:05,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:19:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:19:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:19:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:19:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:19:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:19:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:19:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:19:08,197 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:19:08,197 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:19:08,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:08 BoogieIcfgContainer [2019-10-13 21:19:08,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:19:08,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:19:08,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:19:08,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:19:08,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:19:04" (1/3) ... [2019-10-13 21:19:08,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6445d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:08, skipping insertion in model container [2019-10-13 21:19:08,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:05" (2/3) ... [2019-10-13 21:19:08,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a6445d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:08, skipping insertion in model container [2019-10-13 21:19:08,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:08" (3/3) ... [2019-10-13 21:19:08,209 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product21.cil.c [2019-10-13 21:19:08,221 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:19:08,236 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:19:08,249 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:19:08,302 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:19:08,302 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:19:08,302 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:19:08,303 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:19:08,303 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:19:08,303 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:19:08,304 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:19:08,308 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:19:08,349 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states. [2019-10-13 21:19:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 21:19:08,383 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:08,385 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:08,387 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:08,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:08,394 INFO L82 PathProgramCache]: Analyzing trace with hash 453120643, now seen corresponding path program 1 times [2019-10-13 21:19:08,408 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:08,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475165440] [2019-10-13 21:19:08,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:08,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:08,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:09,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475165440] [2019-10-13 21:19:09,103 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:09,103 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:19:09,103 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794803536] [2019-10-13 21:19:09,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:19:09,111 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:09,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:19:09,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:09,129 INFO L87 Difference]: Start difference. First operand 573 states. Second operand 2 states. [2019-10-13 21:19:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:09,212 INFO L93 Difference]: Finished difference Result 832 states and 1126 transitions. [2019-10-13 21:19:09,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:19:09,216 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-13 21:19:09,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:09,263 INFO L225 Difference]: With dead ends: 832 [2019-10-13 21:19:09,263 INFO L226 Difference]: Without dead ends: 544 [2019-10-13 21:19:09,278 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-10-13 21:19:09,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2019-10-13 21:19:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-10-13 21:19:09,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 742 transitions. [2019-10-13 21:19:09,435 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 742 transitions. Word has length 154 [2019-10-13 21:19:09,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:09,438 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 742 transitions. [2019-10-13 21:19:09,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:19:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 742 transitions. [2019-10-13 21:19:09,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-13 21:19:09,450 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:09,451 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:09,451 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:09,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:09,452 INFO L82 PathProgramCache]: Analyzing trace with hash 545011492, now seen corresponding path program 1 times [2019-10-13 21:19:09,452 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:09,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642102669] [2019-10-13 21:19:09,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,453 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:09,771 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:09,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642102669] [2019-10-13 21:19:09,772 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:09,772 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:09,773 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655744520] [2019-10-13 21:19:09,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:09,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:09,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:09,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:09,780 INFO L87 Difference]: Start difference. First operand 544 states and 742 transitions. Second operand 3 states. [2019-10-13 21:19:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:09,840 INFO L93 Difference]: Finished difference Result 815 states and 1092 transitions. [2019-10-13 21:19:09,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:09,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-13 21:19:09,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:09,846 INFO L225 Difference]: With dead ends: 815 [2019-10-13 21:19:09,846 INFO L226 Difference]: Without dead ends: 547 [2019-10-13 21:19:09,849 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-10-13 21:19:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 546. [2019-10-13 21:19:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-10-13 21:19:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 744 transitions. [2019-10-13 21:19:09,875 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 744 transitions. Word has length 155 [2019-10-13 21:19:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:09,876 INFO L462 AbstractCegarLoop]: Abstraction has 546 states and 744 transitions. [2019-10-13 21:19:09,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:09,876 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 744 transitions. [2019-10-13 21:19:09,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:19:09,880 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:09,880 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] [2019-10-13 21:19:09,881 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:09,881 INFO L82 PathProgramCache]: Analyzing trace with hash -35318856, now seen corresponding path program 1 times [2019-10-13 21:19:09,882 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:09,882 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12223991] [2019-10-13 21:19:09,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,882 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:09,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:10,142 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:10,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12223991] [2019-10-13 21:19:10,143 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:10,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:10,143 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920848257] [2019-10-13 21:19:10,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:10,144 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:10,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:10,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,145 INFO L87 Difference]: Start difference. First operand 546 states and 744 transitions. Second operand 3 states. [2019-10-13 21:19:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:10,181 INFO L93 Difference]: Finished difference Result 1070 states and 1489 transitions. [2019-10-13 21:19:10,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:10,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-13 21:19:10,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:10,186 INFO L225 Difference]: With dead ends: 1070 [2019-10-13 21:19:10,187 INFO L226 Difference]: Without dead ends: 589 [2019-10-13 21:19:10,189 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-10-13 21:19:10,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 588. [2019-10-13 21:19:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-10-13 21:19:10,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 816 transitions. [2019-10-13 21:19:10,212 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 816 transitions. Word has length 161 [2019-10-13 21:19:10,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,213 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 816 transitions. [2019-10-13 21:19:10,213 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:10,213 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 816 transitions. [2019-10-13 21:19:10,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:19:10,217 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,218 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] [2019-10-13 21:19:10,218 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1484385575, now seen corresponding path program 1 times [2019-10-13 21:19:10,219 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,219 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534398482] [2019-10-13 21:19:10,219 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,219 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:19:10,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534398482] [2019-10-13 21:19:10,482 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:10,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:10,484 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605594093] [2019-10-13 21:19:10,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:10,485 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:10,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:10,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,485 INFO L87 Difference]: Start difference. First operand 588 states and 816 transitions. Second operand 3 states. [2019-10-13 21:19:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:10,531 INFO L93 Difference]: Finished difference Result 957 states and 1317 transitions. [2019-10-13 21:19:10,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:10,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-13 21:19:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:10,538 INFO L225 Difference]: With dead ends: 957 [2019-10-13 21:19:10,538 INFO L226 Difference]: Without dead ends: 702 [2019-10-13 21:19:10,539 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-13 21:19:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 701. [2019-10-13 21:19:10,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2019-10-13 21:19:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 978 transitions. [2019-10-13 21:19:10,583 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 978 transitions. Word has length 162 [2019-10-13 21:19:10,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:10,584 INFO L462 AbstractCegarLoop]: Abstraction has 701 states and 978 transitions. [2019-10-13 21:19:10,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:10,585 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 978 transitions. [2019-10-13 21:19:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-13 21:19:10,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:10,594 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:10,594 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:10,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:10,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1253289974, now seen corresponding path program 1 times [2019-10-13 21:19:10,595 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:10,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892127400] [2019-10-13 21:19:10,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,596 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:10,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:10,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892127400] [2019-10-13 21:19:10,957 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:10,957 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:19:10,957 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178882681] [2019-10-13 21:19:10,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:19:10,958 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:10,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:19:10,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:19:10,959 INFO L87 Difference]: Start difference. First operand 701 states and 978 transitions. Second operand 6 states. [2019-10-13 21:19:11,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:11,729 INFO L93 Difference]: Finished difference Result 1710 states and 2381 transitions. [2019-10-13 21:19:11,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:19:11,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 286 [2019-10-13 21:19:11,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:11,738 INFO L225 Difference]: With dead ends: 1710 [2019-10-13 21:19:11,738 INFO L226 Difference]: Without dead ends: 1353 [2019-10-13 21:19:11,740 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:19:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2019-10-13 21:19:11,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1342. [2019-10-13 21:19:11,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2019-10-13 21:19:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1892 transitions. [2019-10-13 21:19:11,805 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1892 transitions. Word has length 286 [2019-10-13 21:19:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:11,805 INFO L462 AbstractCegarLoop]: Abstraction has 1342 states and 1892 transitions. [2019-10-13 21:19:11,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:19:11,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1892 transitions. [2019-10-13 21:19:11,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2019-10-13 21:19:11,814 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:11,815 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 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] [2019-10-13 21:19:11,815 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:11,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:11,815 INFO L82 PathProgramCache]: Analyzing trace with hash 932243253, now seen corresponding path program 1 times [2019-10-13 21:19:11,816 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:11,816 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018076663] [2019-10-13 21:19:11,816 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:11,816 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:11,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:12,066 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:12,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018076663] [2019-10-13 21:19:12,067 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:12,068 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:19:12,068 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742939769] [2019-10-13 21:19:12,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:12,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:12,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:12,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:19:12,070 INFO L87 Difference]: Start difference. First operand 1342 states and 1892 transitions. Second operand 9 states. [2019-10-13 21:19:12,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:12,507 INFO L93 Difference]: Finished difference Result 2053 states and 2833 transitions. [2019-10-13 21:19:12,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:12,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 287 [2019-10-13 21:19:12,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:12,515 INFO L225 Difference]: With dead ends: 2053 [2019-10-13 21:19:12,515 INFO L226 Difference]: Without dead ends: 1316 [2019-10-13 21:19:12,518 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:19:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2019-10-13 21:19:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1312. [2019-10-13 21:19:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2019-10-13 21:19:12,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1841 transitions. [2019-10-13 21:19:12,573 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1841 transitions. Word has length 287 [2019-10-13 21:19:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:12,574 INFO L462 AbstractCegarLoop]: Abstraction has 1312 states and 1841 transitions. [2019-10-13 21:19:12,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:12,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1841 transitions. [2019-10-13 21:19:12,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-10-13 21:19:12,582 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:12,583 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, 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] [2019-10-13 21:19:12,583 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:12,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:12,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2088054668, now seen corresponding path program 1 times [2019-10-13 21:19:12,584 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:12,584 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703540697] [2019-10-13 21:19:12,584 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,584 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:12,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:19:13,172 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703540697] [2019-10-13 21:19:13,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128957470] [2019-10-13 21:19:13,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:13,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:14,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:19:14,382 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:15,124 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:15,228 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:15,341 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:15,520 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:15,520 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:15,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:19:15,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287186653] [2019-10-13 21:19:15,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:15,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:15,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:15,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:15,523 INFO L87 Difference]: Start difference. First operand 1312 states and 1841 transitions. Second operand 9 states. [2019-10-13 21:19:17,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:17,816 INFO L93 Difference]: Finished difference Result 2602 states and 3662 transitions. [2019-10-13 21:19:17,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:17,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 280 [2019-10-13 21:19:17,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:17,825 INFO L225 Difference]: With dead ends: 2602 [2019-10-13 21:19:17,825 INFO L226 Difference]: Without dead ends: 1326 [2019-10-13 21:19:17,832 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 549 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:19:17,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2019-10-13 21:19:17,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1326. [2019-10-13 21:19:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2019-10-13 21:19:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1859 transitions. [2019-10-13 21:19:17,936 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1859 transitions. Word has length 280 [2019-10-13 21:19:17,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:17,940 INFO L462 AbstractCegarLoop]: Abstraction has 1326 states and 1859 transitions. [2019-10-13 21:19:17,940 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:17,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1859 transitions. [2019-10-13 21:19:17,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-10-13 21:19:17,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:17,950 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, 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] [2019-10-13 21:19:18,169 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:18,169 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:18,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:18,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1941581107, now seen corresponding path program 1 times [2019-10-13 21:19:18,171 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:18,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513770741] [2019-10-13 21:19:18,171 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:18,172 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:18,172 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:19:18,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513770741] [2019-10-13 21:19:18,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296912482] [2019-10-13 21:19:18,686 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:19,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:19,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 21:19:19,737 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:20,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:20,342 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:20,424 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:20,424 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:19:20,424 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316833120] [2019-10-13 21:19:20,425 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:20,425 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:20,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:20,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:20,454 INFO L87 Difference]: Start difference. First operand 1326 states and 1859 transitions. Second operand 7 states. [2019-10-13 21:19:21,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:21,806 INFO L93 Difference]: Finished difference Result 2605 states and 3671 transitions. [2019-10-13 21:19:21,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:21,806 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2019-10-13 21:19:21,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:21,816 INFO L225 Difference]: With dead ends: 2605 [2019-10-13 21:19:21,816 INFO L226 Difference]: Without dead ends: 1330 [2019-10-13 21:19:21,822 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 556 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:19:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2019-10-13 21:19:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2019-10-13 21:19:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2019-10-13 21:19:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1864 transitions. [2019-10-13 21:19:21,888 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1864 transitions. Word has length 281 [2019-10-13 21:19:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:21,889 INFO L462 AbstractCegarLoop]: Abstraction has 1330 states and 1864 transitions. [2019-10-13 21:19:21,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1864 transitions. [2019-10-13 21:19:21,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-10-13 21:19:21,896 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:21,896 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, 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] [2019-10-13 21:19:22,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:22,107 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:22,108 INFO L82 PathProgramCache]: Analyzing trace with hash 949543953, now seen corresponding path program 1 times [2019-10-13 21:19:22,108 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:22,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558401545] [2019-10-13 21:19:22,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:22,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:22,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-13 21:19:22,632 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558401545] [2019-10-13 21:19:22,632 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804245956] [2019-10-13 21:19:22,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:23,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:23,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:23,728 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:24,229 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:24,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:24,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:24,557 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:24,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:19:24,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813120167] [2019-10-13 21:19:24,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:24,565 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:24,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:24,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:19:24,566 INFO L87 Difference]: Start difference. First operand 1330 states and 1864 transitions. Second operand 16 states. [2019-10-13 21:19:26,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:26,634 INFO L93 Difference]: Finished difference Result 2611 states and 3670 transitions. [2019-10-13 21:19:26,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:26,635 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 282 [2019-10-13 21:19:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:26,646 INFO L225 Difference]: With dead ends: 2611 [2019-10-13 21:19:26,646 INFO L226 Difference]: Without dead ends: 1342 [2019-10-13 21:19:26,655 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 [2019-10-13 21:19:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2019-10-13 21:19:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2019-10-13 21:19:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-13 21:19:26,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1875 transitions. [2019-10-13 21:19:26,726 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1875 transitions. Word has length 282 [2019-10-13 21:19:26,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:26,728 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1875 transitions. [2019-10-13 21:19:26,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:26,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1875 transitions. [2019-10-13 21:19:26,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-10-13 21:19:26,738 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:26,739 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, 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] [2019-10-13 21:19:26,947 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:26,947 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:26,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:26,948 INFO L82 PathProgramCache]: Analyzing trace with hash -784838164, now seen corresponding path program 2 times [2019-10-13 21:19:26,948 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:26,949 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858829553] [2019-10-13 21:19:26,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:26,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 21:19:27,330 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858829553] [2019-10-13 21:19:27,330 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714207768] [2019-10-13 21:19:27,330 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:28,027 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:19:28,027 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:28,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:28,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:28,326 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:28,326 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:28,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:28,890 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:19:28,972 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:28,972 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:19:28,973 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667386463] [2019-10-13 21:19:28,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:19:28,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:28,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:19:28,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:19:28,975 INFO L87 Difference]: Start difference. First operand 1340 states and 1875 transitions. Second operand 12 states. [2019-10-13 21:19:30,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:30,122 INFO L93 Difference]: Finished difference Result 2602 states and 3658 transitions. [2019-10-13 21:19:30,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:30,122 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 283 [2019-10-13 21:19:30,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:30,131 INFO L225 Difference]: With dead ends: 2602 [2019-10-13 21:19:30,131 INFO L226 Difference]: Without dead ends: 1342 [2019-10-13 21:19:30,136 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 560 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2019-10-13 21:19:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2019-10-13 21:19:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-13 21:19:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1874 transitions. [2019-10-13 21:19:30,187 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1874 transitions. Word has length 283 [2019-10-13 21:19:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:30,188 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1874 transitions. [2019-10-13 21:19:30,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:19:30,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1874 transitions. [2019-10-13 21:19:30,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-10-13 21:19:30,194 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:30,194 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, 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] [2019-10-13 21:19:30,413 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:30,414 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:30,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:30,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1187796340, now seen corresponding path program 3 times [2019-10-13 21:19:30,415 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:30,415 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969158019] [2019-10-13 21:19:30,416 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:30,416 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:30,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:30,947 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969158019] [2019-10-13 21:19:30,947 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253417111] [2019-10-13 21:19:30,947 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:31,567 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:19:31,568 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:31,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:31,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:31,831 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:32,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:32,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:32,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:19:32,719 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:32,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:19:32,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450116260] [2019-10-13 21:19:32,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:19:32,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:32,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:19:32,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:32,722 INFO L87 Difference]: Start difference. First operand 1340 states and 1874 transitions. Second operand 15 states. [2019-10-13 21:19:34,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:34,727 INFO L93 Difference]: Finished difference Result 2609 states and 3665 transitions. [2019-10-13 21:19:34,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:34,727 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 284 [2019-10-13 21:19:34,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:34,735 INFO L225 Difference]: With dead ends: 2609 [2019-10-13 21:19:34,736 INFO L226 Difference]: Without dead ends: 1344 [2019-10-13 21:19:34,740 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 557 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:19:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2019-10-13 21:19:34,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1340. [2019-10-13 21:19:34,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-13 21:19:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1873 transitions. [2019-10-13 21:19:34,798 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1873 transitions. Word has length 284 [2019-10-13 21:19:34,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:34,799 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1873 transitions. [2019-10-13 21:19:34,799 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:19:34,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1873 transitions. [2019-10-13 21:19:34,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-10-13 21:19:34,807 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:34,807 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, 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] [2019-10-13 21:19:35,014 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:35,015 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:35,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:35,015 INFO L82 PathProgramCache]: Analyzing trace with hash 553686700, now seen corresponding path program 1 times [2019-10-13 21:19:35,016 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:35,016 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521553445] [2019-10-13 21:19:35,016 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:35,016 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:35,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-13 21:19:35,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521553445] [2019-10-13 21:19:35,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755982624] [2019-10-13 21:19:35,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:36,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:36,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-13 21:19:36,769 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:37,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:37,317 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:37,388 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 21:19:37,389 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:37,389 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-13 21:19:37,389 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466966190] [2019-10-13 21:19:37,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:19:37,390 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:37,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:19:37,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:37,391 INFO L87 Difference]: Start difference. First operand 1340 states and 1873 transitions. Second operand 11 states.