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_spec7_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:16:51,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:16:51,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:16:51,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:16:51,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:16:51,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:16:51,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:16:51,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:16:51,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:16:51,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:16:51,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:16:51,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:16:51,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:16:51,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:16:51,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:16:51,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:16:51,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:16:51,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:16:51,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:16:51,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:16:51,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:16:51,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:16:51,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:16:51,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:16:51,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:16:51,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:16:51,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:16:51,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:16:51,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:16:51,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:16:51,489 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:16:51,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:16:51,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:16:51,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:16:51,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:16:51,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:16:51,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:16:51,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:16:51,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:16:51,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:16:51,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:16:51,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:16:51,512 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:16:51,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:16:51,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:16:51,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:16:51,514 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:16:51,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:16:51,514 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:16:51,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:16:51,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:16:51,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:16:51,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:16:51,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:16:51,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:16:51,516 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:16:51,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:16:51,516 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:16:51,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:16:51,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:16:51,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:16:51,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:16:51,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:16:51,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:16:51,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:16:51,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:16:51,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:16:51,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:16:51,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:16:51,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:16:51,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:16:51,853 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:16:51,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:16:51,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:16:51,881 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:16:51,881 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:16:51,882 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product30.cil.c [2019-10-15 01:16:51,939 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9abed2f09/0c7e61d7ee664a1e844975e34c1ed0fc/FLAG55196ecb8 [2019-10-15 01:16:52,579 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:16:52,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product30.cil.c [2019-10-15 01:16:52,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9abed2f09/0c7e61d7ee664a1e844975e34c1ed0fc/FLAG55196ecb8 [2019-10-15 01:16:52,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9abed2f09/0c7e61d7ee664a1e844975e34c1ed0fc [2019-10-15 01:16:52,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:16:52,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:16:52,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:16:52,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:16:52,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:16:52,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:16:52" (1/1) ... [2019-10-15 01:16:52,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29914bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:52, skipping insertion in model container [2019-10-15 01:16:52,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:16:52" (1/1) ... [2019-10-15 01:16:52,789 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:16:52,883 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:16:53,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:16:53,742 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:16:53,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:16:54,072 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:16:54,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:54 WrapperNode [2019-10-15 01:16:54,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:16:54,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:16:54,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:16:54,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:16:54,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:54" (1/1) ... [2019-10-15 01:16:54,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:54" (1/1) ... [2019-10-15 01:16:54,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:54" (1/1) ... [2019-10-15 01:16:54,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:54" (1/1) ... [2019-10-15 01:16:54,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:54" (1/1) ... [2019-10-15 01:16:54,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:54" (1/1) ... [2019-10-15 01:16:54,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:54" (1/1) ... [2019-10-15 01:16:54,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:16:54,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:16:54,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:16:54,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:16:54,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:16:54,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:16:54,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:16:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:16:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:16:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:16:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:16:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:16:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:16:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:16:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:16:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:16:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:16:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:16:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:16:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:16:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:16:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:16:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:16:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:16:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:16:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:16:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:16:54,376 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:16:54,376 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:16:54,376 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:16:54,376 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:16:54,376 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:16:54,376 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:16:54,376 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:16:54,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:16:54,377 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:16:54,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptVerify_spec__1 [2019-10-15 01:16:54,377 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:16:54,377 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:16:54,377 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:16:54,377 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:16:54,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:16:54,378 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:16:54,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:16:54,378 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:16:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:16:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:16:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:16:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:16:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:16:54,379 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:16:54,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:16:54,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:16:54,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:16:54,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:16:54,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:16:54,380 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:16:54,380 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:16:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:16:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:16:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:16:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:16:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:16:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:16:54,381 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:16:54,382 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:16:54,382 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:16:54,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:16:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:16:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:16:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:16:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:16:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:16:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:16:54,384 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:16:54,384 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:16:54,384 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:16:54,384 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:16:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:16:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:16:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:16:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:16:54,385 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:16:54,386 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:16:54,386 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:16:54,387 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:16:54,387 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:16:54,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:16:54,388 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:16:54,389 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:16:54,389 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:16:54,390 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:16:54,390 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:16:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:16:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:16:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:16:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:16:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:16:54,391 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:16:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:16:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:16:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:16:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:16:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:16:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:16:54,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:16:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:16:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:16:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:16:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:16:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:16:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:16:54,393 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:16:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:16:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:16:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:16:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:16:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:16:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:16:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:16:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:16:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:16:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:16:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:16:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:16:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:16:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:16:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:16:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:16:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:16:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:16:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:16:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:16:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:16:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:16:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:16:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:16:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:16:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:16:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:16:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:16:54,401 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:16:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:16:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:16:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:16:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:16:54,405 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:16:54,406 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:16:54,406 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:16:54,413 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:16:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:16:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:16:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:16:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:16:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:16:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:16:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:16:54,414 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:16:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:16:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:16:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:16:54,415 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:16:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:16:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:16:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:16:54,416 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:16:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:16:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:16:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:16:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:16:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:16:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:16:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptVerify_spec__1 [2019-10-15 01:16:54,417 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:16:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:16:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:16:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:16:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:16:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:16:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:16:54,418 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:16:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:16:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:16:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:16:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:16:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:16:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:16:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:16:54,419 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:16:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:16:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:16:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:16:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:16:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:16:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:16:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:16:54,420 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:16:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:16:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:16:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:16:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:16:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:16:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:16:54,421 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:16:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:16:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:16:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:16:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:16:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:16:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:16:54,422 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:16:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:16:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:16:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:16:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:16:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:16:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:16:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:16:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:16:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:16:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:16:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:16:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:16:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:16:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:16:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:16:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:16:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:16:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:16:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:16:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:16:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:16:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:16:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:16:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:16:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:16:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:16:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:16:54,428 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:16:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:16:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:16:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:16:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:16:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:16:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:16:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:16:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:16:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:16:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:16:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:16:56,656 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:16:56,656 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:16:56,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:16:56 BoogieIcfgContainer [2019-10-15 01:16:56,658 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:16:56,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:16:56,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:16:56,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:16:56,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:16:52" (1/3) ... [2019-10-15 01:16:56,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acb494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:16:56, skipping insertion in model container [2019-10-15 01:16:56,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:16:54" (2/3) ... [2019-10-15 01:16:56,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acb494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:16:56, skipping insertion in model container [2019-10-15 01:16:56,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:16:56" (3/3) ... [2019-10-15 01:16:56,668 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec7_product30.cil.c [2019-10-15 01:16:56,679 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:16:56,688 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:16:56,703 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:16:56,736 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:16:56,736 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:16:56,738 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:16:56,745 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:16:56,745 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:16:56,745 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:16:56,745 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:16:56,746 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:16:56,789 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states. [2019-10-15 01:16:56,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-15 01:16:56,834 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:56,836 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:16:56,840 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:56,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:56,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1131064280, now seen corresponding path program 1 times [2019-10-15 01:16:56,858 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:56,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149604248] [2019-10-15 01:16:56,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:56,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:56,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:16:57,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149604248] [2019-10-15 01:16:57,608 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:57,609 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:16:57,609 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180727363] [2019-10-15 01:16:57,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:16:57,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:57,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:16:57,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:16:57,634 INFO L87 Difference]: Start difference. First operand 540 states. Second operand 2 states. [2019-10-15 01:16:57,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:57,739 INFO L93 Difference]: Finished difference Result 766 states and 1013 transitions. [2019-10-15 01:16:57,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:16:57,741 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 182 [2019-10-15 01:16:57,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:57,786 INFO L225 Difference]: With dead ends: 766 [2019-10-15 01:16:57,786 INFO L226 Difference]: Without dead ends: 489 [2019-10-15 01:16:57,797 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:16:57,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2019-10-15 01:16:57,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2019-10-15 01:16:57,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-10-15 01:16:57,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 649 transitions. [2019-10-15 01:16:57,915 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 649 transitions. Word has length 182 [2019-10-15 01:16:57,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:57,918 INFO L462 AbstractCegarLoop]: Abstraction has 489 states and 649 transitions. [2019-10-15 01:16:57,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:16:57,918 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 649 transitions. [2019-10-15 01:16:57,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-15 01:16:57,924 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:57,925 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:16:57,925 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:57,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:57,926 INFO L82 PathProgramCache]: Analyzing trace with hash -2140358730, now seen corresponding path program 1 times [2019-10-15 01:16:57,926 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:57,926 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223393497] [2019-10-15 01:16:57,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:57,927 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:57,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:16:58,279 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223393497] [2019-10-15 01:16:58,279 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:58,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:16:58,280 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110017928] [2019-10-15 01:16:58,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:16:58,285 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:58,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:16:58,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:58,286 INFO L87 Difference]: Start difference. First operand 489 states and 649 transitions. Second operand 3 states. [2019-10-15 01:16:58,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:58,342 INFO L93 Difference]: Finished difference Result 749 states and 978 transitions. [2019-10-15 01:16:58,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:16:58,342 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2019-10-15 01:16:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:58,347 INFO L225 Difference]: With dead ends: 749 [2019-10-15 01:16:58,347 INFO L226 Difference]: Without dead ends: 492 [2019-10-15 01:16:58,350 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:58,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-15 01:16:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2019-10-15 01:16:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-10-15 01:16:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 651 transitions. [2019-10-15 01:16:58,386 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 651 transitions. Word has length 183 [2019-10-15 01:16:58,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:58,386 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 651 transitions. [2019-10-15 01:16:58,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:16:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 651 transitions. [2019-10-15 01:16:58,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-10-15 01:16:58,391 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:58,391 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:16:58,391 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:58,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:58,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1496766790, now seen corresponding path program 1 times [2019-10-15 01:16:58,392 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:58,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140372504] [2019-10-15 01:16:58,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:58,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:58,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:16:58,598 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140372504] [2019-10-15 01:16:58,599 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:58,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:16:58,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352220635] [2019-10-15 01:16:58,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:16:58,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:58,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:16:58,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:58,605 INFO L87 Difference]: Start difference. First operand 491 states and 651 transitions. Second operand 3 states. [2019-10-15 01:16:58,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:58,659 INFO L93 Difference]: Finished difference Result 958 states and 1300 transitions. [2019-10-15 01:16:58,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:16:58,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-10-15 01:16:58,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:58,672 INFO L225 Difference]: With dead ends: 958 [2019-10-15 01:16:58,672 INFO L226 Difference]: Without dead ends: 532 [2019-10-15 01:16:58,676 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2019-10-15 01:16:58,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 531. [2019-10-15 01:16:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-10-15 01:16:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 720 transitions. [2019-10-15 01:16:58,742 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 720 transitions. Word has length 193 [2019-10-15 01:16:58,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:58,743 INFO L462 AbstractCegarLoop]: Abstraction has 531 states and 720 transitions. [2019-10-15 01:16:58,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:16:58,744 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 720 transitions. [2019-10-15 01:16:58,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-15 01:16:58,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:58,758 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:16:58,759 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:58,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:58,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1227376246, now seen corresponding path program 1 times [2019-10-15 01:16:58,762 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:58,762 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160901893] [2019-10-15 01:16:58,763 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:58,763 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:58,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:16:59,037 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160901893] [2019-10-15 01:16:59,038 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:59,038 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:16:59,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069605609] [2019-10-15 01:16:59,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:16:59,039 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:59,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:16:59,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:59,040 INFO L87 Difference]: Start difference. First operand 531 states and 720 transitions. Second operand 3 states. [2019-10-15 01:16:59,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:59,107 INFO L93 Difference]: Finished difference Result 1075 states and 1502 transitions. [2019-10-15 01:16:59,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:16:59,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-10-15 01:16:59,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:59,113 INFO L225 Difference]: With dead ends: 1075 [2019-10-15 01:16:59,114 INFO L226 Difference]: Without dead ends: 609 [2019-10-15 01:16:59,116 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-10-15 01:16:59,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 608. [2019-10-15 01:16:59,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-10-15 01:16:59,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 852 transitions. [2019-10-15 01:16:59,157 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 852 transitions. Word has length 194 [2019-10-15 01:16:59,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:59,157 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 852 transitions. [2019-10-15 01:16:59,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:16:59,158 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 852 transitions. [2019-10-15 01:16:59,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-15 01:16:59,213 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:59,213 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:16:59,213 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:59,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1776385894, now seen corresponding path program 1 times [2019-10-15 01:16:59,214 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:59,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051768237] [2019-10-15 01:16:59,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:59,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:59,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:16:59,365 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051768237] [2019-10-15 01:16:59,365 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:59,365 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:16:59,366 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573834570] [2019-10-15 01:16:59,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:16:59,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:59,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:16:59,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:59,367 INFO L87 Difference]: Start difference. First operand 608 states and 852 transitions. Second operand 3 states. [2019-10-15 01:16:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:59,410 INFO L93 Difference]: Finished difference Result 1300 states and 1888 transitions. [2019-10-15 01:16:59,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:16:59,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2019-10-15 01:16:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:59,416 INFO L225 Difference]: With dead ends: 1300 [2019-10-15 01:16:59,417 INFO L226 Difference]: Without dead ends: 757 [2019-10-15 01:16:59,419 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:59,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2019-10-15 01:16:59,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 756. [2019-10-15 01:16:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2019-10-15 01:16:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1104 transitions. [2019-10-15 01:16:59,454 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1104 transitions. Word has length 195 [2019-10-15 01:16:59,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:59,455 INFO L462 AbstractCegarLoop]: Abstraction has 756 states and 1104 transitions. [2019-10-15 01:16:59,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:16:59,455 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1104 transitions. [2019-10-15 01:16:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-15 01:16:59,461 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:59,461 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:16:59,462 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:59,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:59,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2040028310, now seen corresponding path program 1 times [2019-10-15 01:16:59,462 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:59,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493111924] [2019-10-15 01:16:59,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:59,463 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:59,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:16:59,659 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493111924] [2019-10-15 01:16:59,659 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:16:59,659 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:16:59,659 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42097481] [2019-10-15 01:16:59,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:16:59,660 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:59,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:16:59,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:59,661 INFO L87 Difference]: Start difference. First operand 756 states and 1104 transitions. Second operand 3 states. [2019-10-15 01:16:59,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:59,797 INFO L93 Difference]: Finished difference Result 1732 states and 2624 transitions. [2019-10-15 01:16:59,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:16:59,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-15 01:16:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:59,806 INFO L225 Difference]: With dead ends: 1732 [2019-10-15 01:16:59,806 INFO L226 Difference]: Without dead ends: 1041 [2019-10-15 01:16:59,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:16:59,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2019-10-15 01:16:59,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1040. [2019-10-15 01:16:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2019-10-15 01:16:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1584 transitions. [2019-10-15 01:16:59,859 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1584 transitions. Word has length 196 [2019-10-15 01:16:59,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:59,860 INFO L462 AbstractCegarLoop]: Abstraction has 1040 states and 1584 transitions. [2019-10-15 01:16:59,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:16:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1584 transitions. [2019-10-15 01:16:59,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-15 01:16:59,867 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:59,868 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:16:59,868 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:59,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:59,869 INFO L82 PathProgramCache]: Analyzing trace with hash 662668678, now seen corresponding path program 1 times [2019-10-15 01:16:59,869 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:59,869 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447449382] [2019-10-15 01:16:59,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:59,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:59,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:17:00,026 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447449382] [2019-10-15 01:17:00,026 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:00,026 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:00,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355137266] [2019-10-15 01:17:00,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:00,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:00,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:00,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:00,028 INFO L87 Difference]: Start difference. First operand 1040 states and 1584 transitions. Second operand 3 states. [2019-10-15 01:17:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:00,118 INFO L93 Difference]: Finished difference Result 2560 states and 4024 transitions. [2019-10-15 01:17:00,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:00,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2019-10-15 01:17:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:00,130 INFO L225 Difference]: With dead ends: 2560 [2019-10-15 01:17:00,130 INFO L226 Difference]: Without dead ends: 1585 [2019-10-15 01:17:00,135 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2019-10-15 01:17:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1584. [2019-10-15 01:17:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2019-10-15 01:17:00,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2496 transitions. [2019-10-15 01:17:00,228 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2496 transitions. Word has length 197 [2019-10-15 01:17:00,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:00,229 INFO L462 AbstractCegarLoop]: Abstraction has 1584 states and 2496 transitions. [2019-10-15 01:17:00,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:00,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2496 transitions. [2019-10-15 01:17:00,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-15 01:17:00,239 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:00,239 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:17:00,240 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:00,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:00,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2098370244, now seen corresponding path program 1 times [2019-10-15 01:17:00,241 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:00,241 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807714481] [2019-10-15 01:17:00,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:00,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:00,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:17:00,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807714481] [2019-10-15 01:17:00,767 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:00,767 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-15 01:17:00,767 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548739561] [2019-10-15 01:17:00,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-15 01:17:00,768 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:00,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-15 01:17:00,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:17:00,769 INFO L87 Difference]: Start difference. First operand 1584 states and 2496 transitions. Second operand 19 states. [2019-10-15 01:17:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:05,219 INFO L93 Difference]: Finished difference Result 3933 states and 6147 transitions. [2019-10-15 01:17:05,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-15 01:17:05,219 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 199 [2019-10-15 01:17:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:05,246 INFO L225 Difference]: With dead ends: 3933 [2019-10-15 01:17:05,247 INFO L226 Difference]: Without dead ends: 3689 [2019-10-15 01:17:05,251 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-15 01:17:05,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2019-10-15 01:17:05,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3652. [2019-10-15 01:17:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3652 states. [2019-10-15 01:17:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 5771 transitions. [2019-10-15 01:17:05,447 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 5771 transitions. Word has length 199 [2019-10-15 01:17:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:05,448 INFO L462 AbstractCegarLoop]: Abstraction has 3652 states and 5771 transitions. [2019-10-15 01:17:05,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-15 01:17:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 5771 transitions. [2019-10-15 01:17:05,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-15 01:17:05,469 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:05,469 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:05,469 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:05,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:05,470 INFO L82 PathProgramCache]: Analyzing trace with hash 2086662794, now seen corresponding path program 1 times [2019-10-15 01:17:05,470 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:05,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006304343] [2019-10-15 01:17:05,470 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:05,471 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:05,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:17:05,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006304343] [2019-10-15 01:17:05,798 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:05,798 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-15 01:17:05,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888984490] [2019-10-15 01:17:05,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:17:05,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:05,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:17:05,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:17:05,801 INFO L87 Difference]: Start difference. First operand 3652 states and 5771 transitions. Second operand 15 states. [2019-10-15 01:17:09,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:09,295 INFO L93 Difference]: Finished difference Result 4781 states and 7296 transitions. [2019-10-15 01:17:09,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-15 01:17:09,297 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 200 [2019-10-15 01:17:09,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:09,322 INFO L225 Difference]: With dead ends: 4781 [2019-10-15 01:17:09,322 INFO L226 Difference]: Without dead ends: 3754 [2019-10-15 01:17:09,327 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-15 01:17:09,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2019-10-15 01:17:09,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3722. [2019-10-15 01:17:09,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3722 states. [2019-10-15 01:17:09,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5883 transitions. [2019-10-15 01:17:09,531 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5883 transitions. Word has length 200 [2019-10-15 01:17:09,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:09,532 INFO L462 AbstractCegarLoop]: Abstraction has 3722 states and 5883 transitions. [2019-10-15 01:17:09,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:17:09,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5883 transitions. [2019-10-15 01:17:09,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-15 01:17:09,557 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:09,558 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:09,558 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:09,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:09,559 INFO L82 PathProgramCache]: Analyzing trace with hash -159485995, now seen corresponding path program 1 times [2019-10-15 01:17:09,559 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:09,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709041475] [2019-10-15 01:17:09,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:09,560 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:09,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:09,787 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:17:09,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709041475] [2019-10-15 01:17:09,788 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:09,788 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:17:09,788 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839393557] [2019-10-15 01:17:09,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:17:09,789 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:09,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:17:09,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:17:09,790 INFO L87 Difference]: Start difference. First operand 3722 states and 5883 transitions. Second operand 5 states. [2019-10-15 01:17:09,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:09,939 INFO L93 Difference]: Finished difference Result 4540 states and 6954 transitions. [2019-10-15 01:17:09,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:17:09,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2019-10-15 01:17:09,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:09,964 INFO L225 Difference]: With dead ends: 4540 [2019-10-15 01:17:09,965 INFO L226 Difference]: Without dead ends: 3428 [2019-10-15 01:17:09,971 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:17:09,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2019-10-15 01:17:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 3428. [2019-10-15 01:17:10,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3428 states. [2019-10-15 01:17:10,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5479 transitions. [2019-10-15 01:17:10,141 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5479 transitions. Word has length 203 [2019-10-15 01:17:10,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:10,141 INFO L462 AbstractCegarLoop]: Abstraction has 3428 states and 5479 transitions. [2019-10-15 01:17:10,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:17:10,142 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5479 transitions. [2019-10-15 01:17:10,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-15 01:17:10,160 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:10,161 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:10,161 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:10,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:10,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1989327825, now seen corresponding path program 1 times [2019-10-15 01:17:10,162 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:10,162 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532572718] [2019-10-15 01:17:10,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:10,162 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:10,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-15 01:17:10,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532572718] [2019-10-15 01:17:10,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:10,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-15 01:17:10,506 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443290101] [2019-10-15 01:17:10,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:17:10,507 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:10,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:17:10,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:17:10,508 INFO L87 Difference]: Start difference. First operand 3428 states and 5479 transitions. Second operand 16 states. [2019-10-15 01:17:10,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:10,894 INFO L93 Difference]: Finished difference Result 4318 states and 6665 transitions. [2019-10-15 01:17:10,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 01:17:10,894 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 200 [2019-10-15 01:17:10,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:10,917 INFO L225 Difference]: With dead ends: 4318 [2019-10-15 01:17:10,918 INFO L226 Difference]: Without dead ends: 3480 [2019-10-15 01:17:10,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:17:10,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2019-10-15 01:17:11,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3462. [2019-10-15 01:17:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3462 states. [2019-10-15 01:17:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 5522 transitions. [2019-10-15 01:17:11,087 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 5522 transitions. Word has length 200 [2019-10-15 01:17:11,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:11,087 INFO L462 AbstractCegarLoop]: Abstraction has 3462 states and 5522 transitions. [2019-10-15 01:17:11,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:17:11,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 5522 transitions. [2019-10-15 01:17:11,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-15 01:17:11,105 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:11,105 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:17:11,106 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:11,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:11,106 INFO L82 PathProgramCache]: Analyzing trace with hash 22885179, now seen corresponding path program 1 times [2019-10-15 01:17:11,107 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:11,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487842033] [2019-10-15 01:17:11,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:11,107 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:11,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:17:11,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487842033] [2019-10-15 01:17:11,281 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:11,281 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:17:11,281 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629293081] [2019-10-15 01:17:11,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:17:11,282 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:11,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:17:11,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:17:11,283 INFO L87 Difference]: Start difference. First operand 3462 states and 5522 transitions. Second operand 5 states. [2019-10-15 01:17:12,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:12,571 INFO L93 Difference]: Finished difference Result 6692 states and 10472 transitions. [2019-10-15 01:17:12,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:17:12,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2019-10-15 01:17:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:12,627 INFO L225 Difference]: With dead ends: 6692 [2019-10-15 01:17:12,627 INFO L226 Difference]: Without dead ends: 6123 [2019-10-15 01:17:12,633 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:17:12,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6123 states. [2019-10-15 01:17:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6123 to 6092. [2019-10-15 01:17:12,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6092 states. [2019-10-15 01:17:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6092 states to 6092 states and 9655 transitions. [2019-10-15 01:17:12,898 INFO L78 Accepts]: Start accepts. Automaton has 6092 states and 9655 transitions. Word has length 200 [2019-10-15 01:17:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:12,899 INFO L462 AbstractCegarLoop]: Abstraction has 6092 states and 9655 transitions. [2019-10-15 01:17:12,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:17:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6092 states and 9655 transitions. [2019-10-15 01:17:12,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-15 01:17:12,929 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:12,929 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:17:12,930 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:12,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:12,930 INFO L82 PathProgramCache]: Analyzing trace with hash 43222554, now seen corresponding path program 1 times [2019-10-15 01:17:12,930 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:12,931 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122922549] [2019-10-15 01:17:12,931 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:12,931 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:12,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:17:13,134 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122922549] [2019-10-15 01:17:13,134 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:13,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:17:13,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238685789] [2019-10-15 01:17:13,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:17:13,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:13,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:17:13,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:17:13,136 INFO L87 Difference]: Start difference. First operand 6092 states and 9655 transitions. Second operand 7 states. [2019-10-15 01:17:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:14,915 INFO L93 Difference]: Finished difference Result 12518 states and 18483 transitions. [2019-10-15 01:17:14,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 01:17:14,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2019-10-15 01:17:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:14,966 INFO L225 Difference]: With dead ends: 12518 [2019-10-15 01:17:14,966 INFO L226 Difference]: Without dead ends: 10442 [2019-10-15 01:17:14,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:17:14,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10442 states. [2019-10-15 01:17:15,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10442 to 10420. [2019-10-15 01:17:15,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10420 states. [2019-10-15 01:17:15,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10420 states to 10420 states and 15548 transitions. [2019-10-15 01:17:15,417 INFO L78 Accepts]: Start accepts. Automaton has 10420 states and 15548 transitions. Word has length 200 [2019-10-15 01:17:15,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:15,418 INFO L462 AbstractCegarLoop]: Abstraction has 10420 states and 15548 transitions. [2019-10-15 01:17:15,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:17:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 10420 states and 15548 transitions. [2019-10-15 01:17:15,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-15 01:17:15,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:15,452 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:17:15,453 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:15,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:15,453 INFO L82 PathProgramCache]: Analyzing trace with hash 16236281, now seen corresponding path program 1 times [2019-10-15 01:17:15,453 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:15,453 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000240488] [2019-10-15 01:17:15,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:15,454 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:15,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:17:15,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000240488] [2019-10-15 01:17:15,951 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:15,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-15 01:17:15,952 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899183297] [2019-10-15 01:17:15,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-15 01:17:15,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:15,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-15 01:17:15,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-10-15 01:17:15,953 INFO L87 Difference]: Start difference. First operand 10420 states and 15548 transitions. Second operand 26 states. [2019-10-15 01:17:17,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:17,280 INFO L93 Difference]: Finished difference Result 17040 states and 24717 transitions. [2019-10-15 01:17:17,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-15 01:17:17,281 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 201 [2019-10-15 01:17:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:17,329 INFO L225 Difference]: With dead ends: 17040 [2019-10-15 01:17:17,329 INFO L226 Difference]: Without dead ends: 9548 [2019-10-15 01:17:17,360 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:17:17,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9548 states. [2019-10-15 01:17:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9548 to 9415. [2019-10-15 01:17:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9415 states. [2019-10-15 01:17:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9415 states to 9415 states and 14191 transitions. [2019-10-15 01:17:17,747 INFO L78 Accepts]: Start accepts. Automaton has 9415 states and 14191 transitions. Word has length 201 [2019-10-15 01:17:17,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:17,748 INFO L462 AbstractCegarLoop]: Abstraction has 9415 states and 14191 transitions. [2019-10-15 01:17:17,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-15 01:17:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 9415 states and 14191 transitions. [2019-10-15 01:17:17,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-15 01:17:17,768 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:17,769 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:17:17,769 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:17,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:17,770 INFO L82 PathProgramCache]: Analyzing trace with hash -953853226, now seen corresponding path program 1 times [2019-10-15 01:17:17,770 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:17,770 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421252825] [2019-10-15 01:17:17,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:17,770 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:17,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:17:17,955 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421252825] [2019-10-15 01:17:17,955 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:17,955 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 01:17:17,955 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982413293] [2019-10-15 01:17:17,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:17:17,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:17,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:17:17,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:17:17,958 INFO L87 Difference]: Start difference. First operand 9415 states and 14191 transitions. Second operand 10 states. [2019-10-15 01:17:18,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:18,125 INFO L93 Difference]: Finished difference Result 9468 states and 14257 transitions. [2019-10-15 01:17:18,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:17:18,125 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2019-10-15 01:17:18,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:18,250 INFO L225 Difference]: With dead ends: 9468 [2019-10-15 01:17:18,250 INFO L226 Difference]: Without dead ends: 9385 [2019-10-15 01:17:18,256 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:17:18,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9385 states. [2019-10-15 01:17:18,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9385 to 9381. [2019-10-15 01:17:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9381 states. [2019-10-15 01:17:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9381 states to 9381 states and 14121 transitions. [2019-10-15 01:17:18,644 INFO L78 Accepts]: Start accepts. Automaton has 9381 states and 14121 transitions. Word has length 205 [2019-10-15 01:17:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:18,644 INFO L462 AbstractCegarLoop]: Abstraction has 9381 states and 14121 transitions. [2019-10-15 01:17:18,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:17:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand 9381 states and 14121 transitions. [2019-10-15 01:17:18,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-10-15 01:17:18,665 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:18,666 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:18,666 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:18,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:18,667 INFO L82 PathProgramCache]: Analyzing trace with hash -979270205, now seen corresponding path program 1 times [2019-10-15 01:17:18,667 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:18,667 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761440191] [2019-10-15 01:17:18,667 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:18,667 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:18,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:18,825 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:17:18,829 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761440191] [2019-10-15 01:17:18,831 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:18,832 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:17:18,832 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20056938] [2019-10-15 01:17:18,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:17:18,833 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:18,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:17:18,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:17:18,833 INFO L87 Difference]: Start difference. First operand 9381 states and 14121 transitions. Second operand 5 states. [2019-10-15 01:17:19,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:19,046 INFO L93 Difference]: Finished difference Result 13693 states and 19771 transitions. [2019-10-15 01:17:19,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:17:19,047 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2019-10-15 01:17:19,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:19,084 INFO L225 Difference]: With dead ends: 13693 [2019-10-15 01:17:19,084 INFO L226 Difference]: Without dead ends: 9530 [2019-10-15 01:17:19,099 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:17:19,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9530 states. [2019-10-15 01:17:19,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9530 to 9463. [2019-10-15 01:17:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9463 states. [2019-10-15 01:17:19,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9463 states to 9463 states and 14226 transitions. [2019-10-15 01:17:19,488 INFO L78 Accepts]: Start accepts. Automaton has 9463 states and 14226 transitions. Word has length 210 [2019-10-15 01:17:19,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:19,489 INFO L462 AbstractCegarLoop]: Abstraction has 9463 states and 14226 transitions. [2019-10-15 01:17:19,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:17:19,489 INFO L276 IsEmpty]: Start isEmpty. Operand 9463 states and 14226 transitions. [2019-10-15 01:17:19,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-10-15 01:17:19,509 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:19,509 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:19,509 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:19,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:19,510 INFO L82 PathProgramCache]: Analyzing trace with hash 181926907, now seen corresponding path program 1 times [2019-10-15 01:17:19,510 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:19,510 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478764683] [2019-10-15 01:17:19,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:19,511 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:19,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:19,836 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:17:19,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478764683] [2019-10-15 01:17:19,836 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:19,836 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-15 01:17:19,837 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105304789] [2019-10-15 01:17:19,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:17:19,838 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:19,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:17:19,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:17:19,838 INFO L87 Difference]: Start difference. First operand 9463 states and 14226 transitions. Second operand 11 states. [2019-10-15 01:17:20,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:20,272 INFO L93 Difference]: Finished difference Result 13676 states and 19698 transitions. [2019-10-15 01:17:20,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:17:20,273 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 210 [2019-10-15 01:17:20,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:20,313 INFO L225 Difference]: With dead ends: 13676 [2019-10-15 01:17:20,313 INFO L226 Difference]: Without dead ends: 9461 [2019-10-15 01:17:20,329 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-10-15 01:17:20,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9461 states. [2019-10-15 01:17:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9461 to 9425. [2019-10-15 01:17:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9425 states. [2019-10-15 01:17:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9425 states to 9425 states and 14144 transitions. [2019-10-15 01:17:20,736 INFO L78 Accepts]: Start accepts. Automaton has 9425 states and 14144 transitions. Word has length 210 [2019-10-15 01:17:20,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:20,737 INFO L462 AbstractCegarLoop]: Abstraction has 9425 states and 14144 transitions. [2019-10-15 01:17:20,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:17:20,737 INFO L276 IsEmpty]: Start isEmpty. Operand 9425 states and 14144 transitions. [2019-10-15 01:17:20,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-15 01:17:20,755 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:20,756 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:20,756 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:20,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:20,756 INFO L82 PathProgramCache]: Analyzing trace with hash 370927849, now seen corresponding path program 1 times [2019-10-15 01:17:20,757 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:20,757 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756813772] [2019-10-15 01:17:20,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:20,757 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:20,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:17:20,917 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756813772] [2019-10-15 01:17:20,918 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:20,918 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:17:20,918 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659928878] [2019-10-15 01:17:20,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:17:20,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:20,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:17:20,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:17:20,919 INFO L87 Difference]: Start difference. First operand 9425 states and 14144 transitions. Second operand 6 states. [2019-10-15 01:17:21,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:21,767 INFO L93 Difference]: Finished difference Result 23626 states and 35165 transitions. [2019-10-15 01:17:21,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:17:21,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2019-10-15 01:17:21,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:21,844 INFO L225 Difference]: With dead ends: 23626 [2019-10-15 01:17:21,844 INFO L226 Difference]: Without dead ends: 18833 [2019-10-15 01:17:21,867 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 [2019-10-15 01:17:21,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18833 states. [2019-10-15 01:17:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18833 to 18699. [2019-10-15 01:17:22,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18699 states. [2019-10-15 01:17:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18699 states to 18699 states and 28719 transitions. [2019-10-15 01:17:22,539 INFO L78 Accepts]: Start accepts. Automaton has 18699 states and 28719 transitions. Word has length 211 [2019-10-15 01:17:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:22,540 INFO L462 AbstractCegarLoop]: Abstraction has 18699 states and 28719 transitions. [2019-10-15 01:17:22,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:17:22,540 INFO L276 IsEmpty]: Start isEmpty. Operand 18699 states and 28719 transitions. [2019-10-15 01:17:22,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-10-15 01:17:22,576 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:22,577 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:22,577 INFO L410 AbstractCegarLoop]: === Iteration 19 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:22,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:22,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1818811780, now seen corresponding path program 1 times [2019-10-15 01:17:22,578 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:22,578 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269879666] [2019-10-15 01:17:22,578 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:22,578 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:22,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-15 01:17:23,593 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269879666] [2019-10-15 01:17:23,593 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:23,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:17:23,596 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362558982] [2019-10-15 01:17:23,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:17:23,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:23,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:17:23,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:17:23,597 INFO L87 Difference]: Start difference. First operand 18699 states and 28719 transitions. Second operand 8 states.