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_spec6_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:17:33,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:17:33,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:17:33,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:17:33,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:17:33,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:17:33,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:17:33,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:17:33,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:17:33,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:17:33,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:17:33,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:17:33,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:17:33,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:17:33,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:17:33,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:17:33,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:17:33,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:17:33,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:17:33,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:17:33,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:17:33,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:17:33,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:17:33,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:17:33,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:17:33,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:17:33,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:17:33,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:17:33,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:17:33,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:17:33,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:17:33,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:17:33,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:17:33,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:17:33,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:17:33,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:17:33,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:17:33,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:17:33,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:17:33,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:17:33,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:17:33,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:17:33,606 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:17:33,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:17:33,609 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:17:33,609 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:17:33,609 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:17:33,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:17:33,610 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:17:33,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:17:33,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:17:33,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:17:33,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:17:33,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:17:33,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:17:33,612 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:17:33,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:17:33,613 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:17:33,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:17:33,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:17:33,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:17:33,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:17:33,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:17:33,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:17:33,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:17:33,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:17:33,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:17:33,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:17:33,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:17:33,615 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:17:33,616 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:17:33,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:17:33,920 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:17:33,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:17:33,926 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:17:33,927 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:17:33,927 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product34.cil.c [2019-10-13 21:17:34,008 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7f00ec1f/1d68ce6aebf9401484f4e18775725f76/FLAG283fe79e1 [2019-10-13 21:17:34,739 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:17:34,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product34.cil.c [2019-10-13 21:17:34,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7f00ec1f/1d68ce6aebf9401484f4e18775725f76/FLAG283fe79e1 [2019-10-13 21:17:34,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7f00ec1f/1d68ce6aebf9401484f4e18775725f76 [2019-10-13 21:17:34,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:17:34,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:17:34,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:17:34,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:17:34,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:17:34,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:34" (1/1) ... [2019-10-13 21:17:34,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a632ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:34, skipping insertion in model container [2019-10-13 21:17:34,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:17:34" (1/1) ... [2019-10-13 21:17:34,883 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:17:34,972 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:17:35,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:17:35,936 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:17:36,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:17:36,228 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:17:36,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:36 WrapperNode [2019-10-13 21:17:36,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:17:36,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:17:36,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:17:36,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:17:36,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:36" (1/1) ... [2019-10-13 21:17:36,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:36" (1/1) ... [2019-10-13 21:17:36,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:36" (1/1) ... [2019-10-13 21:17:36,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:36" (1/1) ... [2019-10-13 21:17:36,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:36" (1/1) ... [2019-10-13 21:17:36,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:36" (1/1) ... [2019-10-13 21:17:36,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:36" (1/1) ... [2019-10-13 21:17:36,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:17:36,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:17:36,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:17:36,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:17:36,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:17:36,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:17:36,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:17:36,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:17:36,556 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:17:36,556 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:17:36,556 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:17:36,556 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:17:36,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-13 21:17:36,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-13 21:17:36,557 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:17:36,557 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:17:36,557 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:17:36,557 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:17:36,558 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:17:36,558 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:17:36,558 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:17:36,558 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:17:36,558 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:17:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:17:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:17:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:17:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:17:36,559 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:17:36,560 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:17:36,560 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:17:36,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:17:36,560 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:17:36,560 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:17:36,560 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:17:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:17:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:17:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:17:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:17:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:17:36,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:17:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:17:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:17:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:17:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:17:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:17:36,562 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:17:36,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:17:36,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:17:36,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:17:36,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:17:36,563 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:17:36,563 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:17:36,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:17:36,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:17:36,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:17:36,564 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:17:36,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:17:36,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:17:36,565 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:17:36,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:17:36,565 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:17:36,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:17:36,565 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:17:36,565 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:17:36,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:17:36,566 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:17:36,566 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:17:36,568 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:17:36,569 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:17:36,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:17:36,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:17:36,569 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:17:36,569 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:17:36,570 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:17:36,570 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:17:36,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:17:36,570 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:17:36,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:17:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:17:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:17:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:17:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:17:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:17:36,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:17:36,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:17:36,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:17:36,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:17:36,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:17:36,572 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:17:36,572 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:17:36,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:17:36,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:17:36,573 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:17:36,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:17:36,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:17:36,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:17:36,574 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:17:36,574 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:17:36,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:17:36,574 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:17:36,574 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:17:36,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:17:36,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:17:36,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:17:36,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:17:36,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:17:36,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:17:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:17:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:17:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:17:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:17:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:17:36,576 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:17:36,577 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:17:36,577 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:17:36,577 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:17:36,577 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:17:36,577 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:17:36,577 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:17:36,577 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:17:36,578 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:17:36,578 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:17:36,578 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:17:36,578 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:17:36,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:17:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:17:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:17:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:17:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:17:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:17:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:17:36,579 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:17:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:17:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:17:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:17:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:17:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:17:36,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-13 21:17:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:17:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-13 21:17:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:17:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:17:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:17:36,581 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:17:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:17:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:17:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:17:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:17:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:17:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:17:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:17:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:17:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:17:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:17:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:17:36,584 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:17:36,584 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:17:36,584 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:17:36,584 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:17:36,584 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:17:36,584 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:17:36,585 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:17:36,585 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:17:36,585 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:17:36,585 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:17:36,585 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:17:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:17:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:17:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:17:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:17:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:17:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:17:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:17:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:17:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:17:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:17:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:17:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:17:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:17:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:17:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:17:36,588 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:17:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:17:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:17:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:17:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:17:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:17:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:17:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:17:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:17:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:17:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:17:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:17:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:17:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:17:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:17:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:17:36,591 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:17:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:17:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:17:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:17:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:17:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:17:36,592 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:17:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:17:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:17:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:17:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:17:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:17:36,593 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:17:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:17:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:17:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:17:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:17:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:17:36,594 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:17:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:17:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:17:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:17:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:17:36,595 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:17:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:17:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:17:36,596 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:17:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:17:36,597 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:17:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:17:36,598 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:17:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:17:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:17:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:17:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:17:36,599 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:17:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:17:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:17:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:17:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:17:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:17:36,600 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:17:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:17:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:17:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:17:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:17:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:17:36,601 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:17:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:17:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:17:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:17:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:17:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:17:36,602 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:17:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:17:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:17:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:17:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:17:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:17:36,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:17:36,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:17:38,781 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:17:38,781 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:17:38,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:38 BoogieIcfgContainer [2019-10-13 21:17:38,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:17:38,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:17:38,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:17:38,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:17:38,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:17:34" (1/3) ... [2019-10-13 21:17:38,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3576a82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:38, skipping insertion in model container [2019-10-13 21:17:38,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:17:36" (2/3) ... [2019-10-13 21:17:38,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3576a82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:17:38, skipping insertion in model container [2019-10-13 21:17:38,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:17:38" (3/3) ... [2019-10-13 21:17:38,795 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product34.cil.c [2019-10-13 21:17:38,805 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:17:38,817 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:17:38,830 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:17:38,873 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:17:38,873 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:17:38,873 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:17:38,880 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:17:38,880 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:17:38,881 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:17:38,881 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:17:38,881 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:17:38,923 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states. [2019-10-13 21:17:38,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-13 21:17:38,959 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:38,962 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] [2019-10-13 21:17:38,966 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:38,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:38,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1836415482, now seen corresponding path program 1 times [2019-10-13 21:17:38,982 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:38,982 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11291866] [2019-10-13 21:17:38,982 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:38,983 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:38,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:39,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11291866] [2019-10-13 21:17:39,783 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:39,783 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:17:39,784 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9518323] [2019-10-13 21:17:39,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:17:39,791 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:39,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:17:39,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:17:39,808 INFO L87 Difference]: Start difference. First operand 659 states. Second operand 2 states. [2019-10-13 21:17:39,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:39,898 INFO L93 Difference]: Finished difference Result 1004 states and 1352 transitions. [2019-10-13 21:17:39,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:17:39,900 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 198 [2019-10-13 21:17:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:39,941 INFO L225 Difference]: With dead ends: 1004 [2019-10-13 21:17:39,945 INFO L226 Difference]: Without dead ends: 630 [2019-10-13 21:17:39,959 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:17:39,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2019-10-13 21:17:40,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 630. [2019-10-13 21:17:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-13 21:17:40,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 854 transitions. [2019-10-13 21:17:40,107 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 854 transitions. Word has length 198 [2019-10-13 21:17:40,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:40,110 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 854 transitions. [2019-10-13 21:17:40,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:17:40,110 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 854 transitions. [2019-10-13 21:17:40,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-13 21:17:40,121 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:40,121 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] [2019-10-13 21:17:40,122 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:40,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:40,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1234031911, now seen corresponding path program 1 times [2019-10-13 21:17:40,123 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:40,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563285302] [2019-10-13 21:17:40,124 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:40,124 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:40,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:40,563 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563285302] [2019-10-13 21:17:40,563 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:40,564 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:40,564 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823902877] [2019-10-13 21:17:40,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:40,573 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:40,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:40,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:40,574 INFO L87 Difference]: Start difference. First operand 630 states and 854 transitions. Second operand 3 states. [2019-10-13 21:17:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:40,671 INFO L93 Difference]: Finished difference Result 987 states and 1316 transitions. [2019-10-13 21:17:40,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:40,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2019-10-13 21:17:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:40,682 INFO L225 Difference]: With dead ends: 987 [2019-10-13 21:17:40,683 INFO L226 Difference]: Without dead ends: 633 [2019-10-13 21:17:40,686 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:40,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2019-10-13 21:17:40,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 632. [2019-10-13 21:17:40,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 632 states. [2019-10-13 21:17:40,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 856 transitions. [2019-10-13 21:17:40,750 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 856 transitions. Word has length 199 [2019-10-13 21:17:40,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:40,751 INFO L462 AbstractCegarLoop]: Abstraction has 632 states and 856 transitions. [2019-10-13 21:17:40,751 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:40,751 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 856 transitions. [2019-10-13 21:17:40,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:17:40,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:40,759 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] [2019-10-13 21:17:40,759 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:40,761 INFO L82 PathProgramCache]: Analyzing trace with hash -245674181, now seen corresponding path program 1 times [2019-10-13 21:17:40,761 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:40,761 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048249337] [2019-10-13 21:17:40,762 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:40,762 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:40,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:40,929 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048249337] [2019-10-13 21:17:40,929 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:40,929 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:40,929 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777722408] [2019-10-13 21:17:40,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:40,930 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:40,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:40,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:40,931 INFO L87 Difference]: Start difference. First operand 632 states and 856 transitions. Second operand 3 states. [2019-10-13 21:17:40,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:40,989 INFO L93 Difference]: Finished difference Result 1242 states and 1713 transitions. [2019-10-13 21:17:40,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:40,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-10-13 21:17:40,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:41,000 INFO L225 Difference]: With dead ends: 1242 [2019-10-13 21:17:41,001 INFO L226 Difference]: Without dead ends: 675 [2019-10-13 21:17:41,004 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:41,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2019-10-13 21:17:41,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 674. [2019-10-13 21:17:41,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 674 states. [2019-10-13 21:17:41,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 928 transitions. [2019-10-13 21:17:41,046 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 928 transitions. Word has length 205 [2019-10-13 21:17:41,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:41,050 INFO L462 AbstractCegarLoop]: Abstraction has 674 states and 928 transitions. [2019-10-13 21:17:41,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:17:41,050 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 928 transitions. [2019-10-13 21:17:41,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-13 21:17:41,058 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:41,058 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] [2019-10-13 21:17:41,059 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:41,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:41,060 INFO L82 PathProgramCache]: Analyzing trace with hash 716085072, now seen corresponding path program 1 times [2019-10-13 21:17:41,060 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:41,061 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640817488] [2019-10-13 21:17:41,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:41,061 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:41,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:17:41,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640817488] [2019-10-13 21:17:41,501 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:41,501 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 21:17:41,502 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661410563] [2019-10-13 21:17:41,503 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:17:41,503 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:41,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:17:41,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 21:17:41,504 INFO L87 Difference]: Start difference. First operand 674 states and 928 transitions. Second operand 11 states. [2019-10-13 21:17:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:48,599 INFO L93 Difference]: Finished difference Result 3690 states and 5193 transitions. [2019-10-13 21:17:48,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-13 21:17:48,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 206 [2019-10-13 21:17:48,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:48,633 INFO L225 Difference]: With dead ends: 3690 [2019-10-13 21:17:48,634 INFO L226 Difference]: Without dead ends: 3349 [2019-10-13 21:17:48,639 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:17:48,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3349 states. [2019-10-13 21:17:48,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3349 to 3328. [2019-10-13 21:17:48,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3328 states. [2019-10-13 21:17:48,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3328 states to 3328 states and 4577 transitions. [2019-10-13 21:17:48,850 INFO L78 Accepts]: Start accepts. Automaton has 3328 states and 4577 transitions. Word has length 206 [2019-10-13 21:17:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:48,852 INFO L462 AbstractCegarLoop]: Abstraction has 3328 states and 4577 transitions. [2019-10-13 21:17:48,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 21:17:48,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3328 states and 4577 transitions. [2019-10-13 21:17:48,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-13 21:17:48,858 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:48,858 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] [2019-10-13 21:17:48,859 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:48,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:48,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2127126410, now seen corresponding path program 1 times [2019-10-13 21:17:48,860 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:48,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761524851] [2019-10-13 21:17:48,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:48,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:48,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:17:49,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761524851] [2019-10-13 21:17:49,314 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:49,314 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-10-13 21:17:49,314 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724987990] [2019-10-13 21:17:49,315 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 21:17:49,315 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:49,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 21:17:49,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:17:49,316 INFO L87 Difference]: Start difference. First operand 3328 states and 4577 transitions. Second operand 20 states. [2019-10-13 21:17:50,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:50,032 INFO L93 Difference]: Finished difference Result 6287 states and 8770 transitions. [2019-10-13 21:17:50,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 21:17:50,033 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 207 [2019-10-13 21:17:50,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:50,059 INFO L225 Difference]: With dead ends: 6287 [2019-10-13 21:17:50,059 INFO L226 Difference]: Without dead ends: 3274 [2019-10-13 21:17:50,073 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:17:50,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3274 states. [2019-10-13 21:17:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3274 to 3272. [2019-10-13 21:17:50,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3272 states. [2019-10-13 21:17:50,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4493 transitions. [2019-10-13 21:17:50,257 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4493 transitions. Word has length 207 [2019-10-13 21:17:50,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:50,258 INFO L462 AbstractCegarLoop]: Abstraction has 3272 states and 4493 transitions. [2019-10-13 21:17:50,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-13 21:17:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4493 transitions. [2019-10-13 21:17:50,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-13 21:17:50,263 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:50,263 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, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:50,263 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:50,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:50,264 INFO L82 PathProgramCache]: Analyzing trace with hash 264077804, now seen corresponding path program 1 times [2019-10-13 21:17:50,264 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:50,264 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659650286] [2019-10-13 21:17:50,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:50,264 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:50,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:50,497 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:17:50,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659650286] [2019-10-13 21:17:50,499 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:50,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:17:50,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154400145] [2019-10-13 21:17:50,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:17:50,500 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:50,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:17:50,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:17:50,501 INFO L87 Difference]: Start difference. First operand 3272 states and 4493 transitions. Second operand 6 states. [2019-10-13 21:17:51,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:51,339 INFO L93 Difference]: Finished difference Result 9521 states and 13248 transitions. [2019-10-13 21:17:51,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:17:51,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2019-10-13 21:17:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:51,389 INFO L225 Difference]: With dead ends: 9521 [2019-10-13 21:17:51,389 INFO L226 Difference]: Without dead ends: 6631 [2019-10-13 21:17:51,404 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:17:51,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2019-10-13 21:17:51,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 6560. [2019-10-13 21:17:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6560 states. [2019-10-13 21:17:51,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6560 states to 6560 states and 9109 transitions. [2019-10-13 21:17:51,827 INFO L78 Accepts]: Start accepts. Automaton has 6560 states and 9109 transitions. Word has length 216 [2019-10-13 21:17:51,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:51,828 INFO L462 AbstractCegarLoop]: Abstraction has 6560 states and 9109 transitions. [2019-10-13 21:17:51,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:17:51,829 INFO L276 IsEmpty]: Start isEmpty. Operand 6560 states and 9109 transitions. [2019-10-13 21:17:51,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-13 21:17:51,839 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:51,840 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:51,840 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:51,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:51,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1993707159, now seen corresponding path program 1 times [2019-10-13 21:17:51,841 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:51,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65472508] [2019-10-13 21:17:51,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:51,841 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:51,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:51,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:17:52,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65472508] [2019-10-13 21:17:52,048 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:52,048 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:17:52,048 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031552287] [2019-10-13 21:17:52,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:17:52,049 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:52,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:17:52,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:17:52,050 INFO L87 Difference]: Start difference. First operand 6560 states and 9109 transitions. Second operand 5 states. [2019-10-13 21:17:54,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:54,097 INFO L93 Difference]: Finished difference Result 24907 states and 35520 transitions. [2019-10-13 21:17:54,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:17:54,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2019-10-13 21:17:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:54,245 INFO L225 Difference]: With dead ends: 24907 [2019-10-13 21:17:54,246 INFO L226 Difference]: Without dead ends: 19044 [2019-10-13 21:17:54,284 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 [2019-10-13 21:17:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19044 states. [2019-10-13 21:17:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19044 to 18948. [2019-10-13 21:17:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18948 states. [2019-10-13 21:17:55,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18948 states to 18948 states and 26778 transitions. [2019-10-13 21:17:55,309 INFO L78 Accepts]: Start accepts. Automaton has 18948 states and 26778 transitions. Word has length 217 [2019-10-13 21:17:55,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:55,310 INFO L462 AbstractCegarLoop]: Abstraction has 18948 states and 26778 transitions. [2019-10-13 21:17:55,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:17:55,311 INFO L276 IsEmpty]: Start isEmpty. Operand 18948 states and 26778 transitions. [2019-10-13 21:17:55,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-13 21:17:55,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:55,325 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:55,326 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:55,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:55,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1714484018, now seen corresponding path program 1 times [2019-10-13 21:17:55,327 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:55,327 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454603444] [2019-10-13 21:17:55,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:55,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:55,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:56,411 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:17:56,412 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454603444] [2019-10-13 21:17:56,412 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:56,413 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-13 21:17:56,413 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248771435] [2019-10-13 21:17:56,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-13 21:17:56,415 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:56,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-13 21:17:56,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:17:56,417 INFO L87 Difference]: Start difference. First operand 18948 states and 26778 transitions. Second operand 13 states. [2019-10-13 21:17:57,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:57,434 INFO L93 Difference]: Finished difference Result 36471 states and 51393 transitions. [2019-10-13 21:17:57,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 21:17:57,435 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 217 [2019-10-13 21:17:57,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:57,560 INFO L225 Difference]: With dead ends: 36471 [2019-10-13 21:17:57,560 INFO L226 Difference]: Without dead ends: 18872 [2019-10-13 21:17:57,644 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:17:57,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18872 states. [2019-10-13 21:17:58,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18872 to 18820. [2019-10-13 21:17:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18820 states. [2019-10-13 21:17:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18820 states to 18820 states and 26387 transitions. [2019-10-13 21:17:58,555 INFO L78 Accepts]: Start accepts. Automaton has 18820 states and 26387 transitions. Word has length 217 [2019-10-13 21:17:58,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:58,556 INFO L462 AbstractCegarLoop]: Abstraction has 18820 states and 26387 transitions. [2019-10-13 21:17:58,556 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-13 21:17:58,556 INFO L276 IsEmpty]: Start isEmpty. Operand 18820 states and 26387 transitions. [2019-10-13 21:17:58,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-13 21:17:58,569 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:58,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:58,570 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:58,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:58,570 INFO L82 PathProgramCache]: Analyzing trace with hash 1765180475, now seen corresponding path program 1 times [2019-10-13 21:17:58,571 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:58,571 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145640804] [2019-10-13 21:17:58,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:58,571 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:58,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:17:58,770 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145640804] [2019-10-13 21:17:58,771 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:17:58,772 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:17:58,773 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233336645] [2019-10-13 21:17:58,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:17:58,775 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:58,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:17:58,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:58,776 INFO L87 Difference]: Start difference. First operand 18820 states and 26387 transitions. Second operand 3 states. [2019-10-13 21:17:59,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:59,416 INFO L93 Difference]: Finished difference Result 37919 states and 53334 transitions. [2019-10-13 21:17:59,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:17:59,416 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2019-10-13 21:17:59,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:59,502 INFO L225 Difference]: With dead ends: 37919 [2019-10-13 21:17:59,503 INFO L226 Difference]: Without dead ends: 19164 [2019-10-13 21:17:59,546 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:17:59,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19164 states. [2019-10-13 21:18:00,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19164 to 19160. [2019-10-13 21:18:00,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19160 states. [2019-10-13 21:18:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19160 states to 19160 states and 27008 transitions. [2019-10-13 21:18:00,276 INFO L78 Accepts]: Start accepts. Automaton has 19160 states and 27008 transitions. Word has length 246 [2019-10-13 21:18:00,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:00,276 INFO L462 AbstractCegarLoop]: Abstraction has 19160 states and 27008 transitions. [2019-10-13 21:18:00,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 19160 states and 27008 transitions. [2019-10-13 21:18:00,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-10-13 21:18:00,293 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:00,293 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, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:00,293 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:00,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:00,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1949658866, now seen corresponding path program 1 times [2019-10-13 21:18:00,294 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:00,294 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305229654] [2019-10-13 21:18:00,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:00,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:00,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:18:00,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305229654] [2019-10-13 21:18:00,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:00,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:00,483 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535673134] [2019-10-13 21:18:00,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:00,485 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:00,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:00,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:00,485 INFO L87 Difference]: Start difference. First operand 19160 states and 27008 transitions. Second operand 3 states. [2019-10-13 21:18:00,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:00,996 INFO L93 Difference]: Finished difference Result 38899 states and 55133 transitions. [2019-10-13 21:18:00,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:00,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2019-10-13 21:18:00,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:01,095 INFO L225 Difference]: With dead ends: 38899 [2019-10-13 21:18:01,096 INFO L226 Difference]: Without dead ends: 19804 [2019-10-13 21:18:01,148 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:01,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19804 states. [2019-10-13 21:18:01,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19804 to 19800. [2019-10-13 21:18:01,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19800 states. [2019-10-13 21:18:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19800 states to 19800 states and 28178 transitions. [2019-10-13 21:18:01,895 INFO L78 Accepts]: Start accepts. Automaton has 19800 states and 28178 transitions. Word has length 253 [2019-10-13 21:18:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:01,896 INFO L462 AbstractCegarLoop]: Abstraction has 19800 states and 28178 transitions. [2019-10-13 21:18:01,896 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 19800 states and 28178 transitions. [2019-10-13 21:18:01,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-13 21:18:01,917 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:01,918 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:01,918 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:01,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:01,919 INFO L82 PathProgramCache]: Analyzing trace with hash -192251923, now seen corresponding path program 1 times [2019-10-13 21:18:01,919 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:01,919 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62517276] [2019-10-13 21:18:01,919 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:01,919 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:01,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 21:18:02,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62517276] [2019-10-13 21:18:02,980 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:02,980 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:18:02,980 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778054795] [2019-10-13 21:18:02,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:18:02,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:02,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:18:02,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:18:02,982 INFO L87 Difference]: Start difference. First operand 19800 states and 28178 transitions. Second operand 8 states.